Internal combustion tamping pickaxe convenient to disassemble and assemble

Abstract

The invention relates to the technical field of railway maintenance equipment, and discloses an internal combustion tamping pickaxe convenient to disassemble and assemble, which comprises a handle, an accelerator combination switch used for controlling power output is arranged on the handle, and the accelerator combination switch can control start and stop and output power of a power source; a vibration reduction component is arranged on the lower portion of the gearbox, the vibration reduction component is a rubber spring, the handle is installed at the upper end of the rubber spring, and vibration reduction is achieved through the rubber spring so that the operation comfort can be improved; the spring flexible shaft is in transmission connection with the output end of the gear box and is used for transmitting power; the vibrating bar is mounted at the lower part of the rubber spring and is used for tamping ballast of a ballast bed; the gasoline engine serves as a power source, and an output shaft of the gasoline engine is in transmission connection with the spring flexible shaft through the gearbox. By optimizing the structural design, the layout is compact, the function division of each part is clear, the part replacement frequency and maintenance cost are reduced while the equipment performance is ensured, and the operation efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of railway maintenance equipment technology, specifically to an internal combustion tamping pick that is easy to assemble and disassemble. Background Technology

[0002] Tamping the ballast bed of ballasted tracks with tamping machinery to improve track smoothness and structural reliability is an important part of railway maintenance.

[0003] Currently, the small railway maintenance equipment used for tamping the ballast bed on ballasted railway lines is generally a variety of tamping machines, among which various small railway maintenance equipment is the most widely used. It uses the tamping rod to generate vibration, overcome the frictional resistance between the ballast, and cause them to move and rearrange relative to each other, filling the gaps under the sleepers, thereby achieving the purpose of compacting the ballast and stabilizing the ballast bed. At present, the commonly used small railway maintenance equipment for tamping the ballast and compacting the ballast bed on ballasted railway lines is a variety of tamping picks, including direct-acting, portable, and eccentric types. Power is transmitted using flexible shafts or torsion springs, and the types are quite diverse.

[0004] However, in actual use, these tamping picks have some drawbacks such as complex structure, inconvenient disassembly and installation, and low on-site maintenance efficiency. Therefore, there is an urgent need to innovate and develop a new internal combustion tamping pick that is reliable in operation, easy to disassemble and assemble, comfortable to operate, and convenient for on-site maintenance, so as to meet the urgent needs of tamping and maintenance of ballasted lines. This invention provides an internal combustion tamping pick that is easy to disassemble and assemble, aiming to improve some of the shortcomings of existing equipment. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an internal combustion tamping pick that is easy to assemble and disassemble, solving the problems of complex structures, inconvenient disassembly and installation, and difficult on-site maintenance of the direct-acting, portable, and eccentric tamping picks currently used on ballasted railway lines.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an internal combustion tamping pick that is easy to assemble and disassemble, comprising: The handle is equipped with a throttle combination switch for controlling power output. The throttle combination switch can control the start and stop of the power source and the output power. The gearbox has a vibration damping component at its lower part, which is a rubber spring. The handle is mounted on the upper end of the rubber spring. Vibration damping is achieved through the rubber spring to improve operating comfort. A flexible spring shaft, which is connected to the output end of the gearbox, is used to transmit power; A vibratory rod is installed at the lower part of the rubber spring and is used to tamp the ballast of the track bed. The spring flexible shaft is detachably connected to the roller inside the vibratory rod through the spring positioning column and the joint inside the vibratory rod. The connecting sleeve of the vibratory rod and the rod shell are fitted with the conical surface and form a detachable fastening structure with flange I and flange II, so as to realize the quick assembly and disassembly of the vibratory rod. A gasoline engine serves as a power source, and its output shaft is connected to the spring flexible shaft via the gearbox, forming a power transmission path.

[0007] Preferably, the inner wall of flange II is provided with internal threads, the rod shell is provided with an inner conical surface that matches the outer conical surface of the connecting sleeve, and the outer wall of the rod shell is also provided with an external thread that matches the internal threads of flange II.

[0008] Preferably, the lower end of the connecting sleeve is integrally formed with an outer conical surface, and the upper end is integrally formed with a step for fitting into flange I. The connecting sleeve and the rod shell are connected by the outer conical surface and the inner conical surface, and flange I and flange II are fastened by a threaded pair.

[0009] Preferably, the vibrating rod shell is further equipped with bearings, washers, oil seals and oil seal seats, and the inner wall of the rod shell is integrally fixed with a raceway. The lower end of the rod shell is detachably connected to a pick body by a thread, and the end of the pick body away from the rod shell is detachably connected to a pick head by a thread.

[0010] Preferably, there are two rubber springs, which are symmetrically installed on the lower part of the gearbox via rubber spring clamps to form a vibration damping connection assembly.

[0011] Preferably, the outer conical surface of the roller cone and the inner conical surface of the raceway are in a pure rolling fit without sliding.

[0012] Preferably, the oil seal is made of fluororubber and the interference fit between the oil seal and the oil seal seat is 0.02-0.05mm.

[0013] Preferably, the outer surface of the handle is covered with an anti-slip rubber layer, and the hardness of the rubber layer is Shore 60-70.

[0014] Preferably, the pickaxe head is made of high manganese steel, and the surface is hardened to a hardness of not less than HRC50. The bearing is a deep groove ball bearing, and the bearing precision grade is not less than P6.

[0015] Preferably, the vibration frequency of the vibrator during operation is 160Hz, the amplitude is 1.2mm, and the vibration acceleration is 720m / s². 2 .

[0016] This invention provides an internal combustion tamping pick that is easy to assemble and disassemble. It has the following beneficial effects: 1. This invention overcomes the shortcomings of existing tamping picks, such as inconvenient disassembly and installation and difficult on-site maintenance, through structural improvement design. It meets the requirements of simple structure, convenient disassembly and assembly, and convenient on-site maintenance for tamping and maintenance of ballasted lines. The rubber spring has a good vibration reduction effect and comfortable operation. As proven by railway construction units, this machine has strong adaptability, reliable operation, high production efficiency, and good tamping effect. 2. The structural design of this invention takes into account both practicality and economy. The overall structure is compact, and the functions of each component are clearly defined. The rubber spring has both vibration damping and connection functions, and the flange and conical surface fit together to take into account positioning and sealing. While ensuring the performance of the equipment, the structure is simplified, the equipment is reliable in operation, and maintenance is relatively simple. It can reduce the frequency of component replacement and maintenance costs, and the improved work efficiency can reduce the overall construction cost, thus having good economic benefits. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 yes Figure 1 Schematic diagram of the internal structure of the vibrating rod; Figure 3 yes Figure 2 Schematic diagram of the structure of the rubber spring clamp; Figure 4 yes Figure 2 Schematic diagram of the middle connecting sleeve; Figure 5 yes Figure 2 Schematic diagram of the structure of flange I; Figure 6 yes Figure 2 Schematic diagram of the structure of flange II; Figure 7 yes Figure 2 A schematic diagram of the structure of the middle rod shell.

[0018] The components include: 1. Handle; 2. Throttle combination switch; 3. Gearbox; 4. Rubber spring; 5. Spring flexible shaft; 6. Vibrating rod; 6-1. Spring positioning pin; 6-2. Rubber spring clamp; 6-3. I flange; 6-4. Connecting sleeve; 6-5. Joint; 6-6. II flange; 6-7. Bearing; 6-8. Washer; 6-9. Oil seal; 6-10. Oil seal seat; 6-11. Tapered roller; 6-12. Rod shell; 6-13. Raceway; 6-14. Pick body; 6-15. Pick head; 7. Gasoline engine. Detailed Implementation

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see the appendix Figure 1 -Appendix Figure 7 This invention provides an easy-to-assemble and disassemble internal combustion tamping pick, mainly used for tamping operations of railway ballast. The whole is composed of a handle 1, a throttle combination switch 2, a gearbox 3, a rubber spring 4, a spring flexible shaft 5, a vibrating rod 6 and a gasoline engine 7 as core components. The components form a complete power transmission and operation system through a specific connection method, and at the same time have the functions of vibration reduction, easy disassembly and assembly and stable operation.

[0021] Specifically, in this invention, the handle 1 is a key component for the operator to hold, and its outer surface is covered with a layer of non-slip rubber. The hardness of the rubber layer is 60-70 on the Shore. This hardness range can ensure the comfort of the operator when holding it, and can also effectively prevent the handle from slipping due to hand sweat or vibration during operation, thereby improving the safety of operation. A throttle combination switch 2 for controlling power output is integrated on the handle 1. The throttle combination switch 2 is electrically connected to the control system of the gasoline engine 7 through a wire. The operator can control the start and stop of the gasoline engine 7 by adjusting different positions of the throttle combination switch 2. When the switch is turned to the start position, the gasoline engine 7 starts running. When it is turned to the stop position, the gasoline engine 7 stops working. Meanwhile, by rotating the adjustment knob of the throttle combination switch 2, the fuel supply flow of the gasoline engine 7 can be changed, thereby controlling its output power to meet the power requirements of different track bed ballast tamping operations. The gearbox 3 is the intermediate core component for power transmission. It is equipped with a set of meshing gears. The gear module is designed to be 2.5-3mm according to the power transmission requirements. It is used to convert the speed and torque of the output shaft of the gasoline engine 7 into power parameters that are compatible with the spring flexible shaft 5. A vibration damping component is provided at the lower part of the gearbox 3. The vibration damping component uses rubber springs 4, and there are two rubber springs 4. The two rubber springs 4 are symmetrically installed on the two mounting seats on the lower part of the gearbox 3 through rubber spring clamps 6-2 to form a complete vibration damping connection assembly.

[0022] The rubber spring 4 is made of nitrile rubber with an elastic modulus of 8-10 MPa, which can effectively absorb the vibration energy transmitted by the gearbox 3 and the vibrating rod 6. The lower end of the handle 1 is fixedly mounted on the upper end of two rubber springs 4 by bolts. During operation, the vibration is buffered and weakened by the elastic deformation of the rubber springs 4, reducing the vibration intensity transmitted to the handle 1, significantly improving the operator's operating comfort, and avoiding hand fatigue caused by long-term operation.

[0023] The flexible spring shaft 5 is a flexible power transmission component. One end of it is connected to the output end of the gearbox 3 via a coupling, and the other end extends into the vibrating rod 6 and is detachably connected to the roller cone 6-11 inside the vibrating rod 6. The specific connection structure is as follows: the end of the flexible spring shaft 5 is engaged with one end of the spring positioning post 6-1 inside the vibrating rod 6 via a spline. The other end of the spring positioning post 6-1 is fixedly connected to the connector 6-5 via a thread. The end of the connector 6-5 away from the spring positioning post 6-1 is detachably connected to the central shaft hole of the roller cone 6-11 via a thread. This connection method facilitates the disassembly and maintenance of the flexible spring shaft 5 and the roller cone 6-11, while ensuring the stability of power transmission.

[0024] The main power transmission path of this invention is as follows: the gasoline engine 7 serves as the power source, and its output shaft is connected to the drive gear inside the gearbox 3. The drive gear drives the driven gear to rotate, and the driven gear is fixedly connected to the output shaft of the gearbox 3, thereby driving the spring flexible shaft 5 to rotate. The spring flexible shaft 5 transmits power to the roller cone 6-11 through the spring positioning column 6-1 and the connector 6-5, and finally drives the vibrator 6 to achieve the vibration tamping operation.

[0025] The vibratory rod 6 is the core operating component for ballast tamping. Its overall structure includes a spring positioning post 6-1, a rubber spring clamp 6-2, flange I 6-3, a connecting sleeve 6-4, a joint 6-5, flange II 6-6, a bearing 6-7, a gasket 6-8, an oil seal 6-9, an oil seal seat 6-10, a roller cone 6-11, a rod shell 6-12, a raceway 6-13, a pick body 6-14, and a pick head 6-15. The structure and fit of each component are as follows: The connecting sleeve 6-4 is a stepped cylindrical structure, with an outer conical surface 6-4-1 integrally formed at its lower end and a step 6-4-2 integrally formed at its upper end for fitting into flange I 6-3; the rod shell 6-12 is a cylindrical hollow shell, with an inner conical surface 6-12-1 on its upper inner wall that matches the outer conical surface 6-4-1 of the connecting sleeve 6-4, and an outer thread 6-12-2 on its upper outer wall that matches the internal thread 6-6-1 of flange II 6-6; the inner wall of flange II 6-6 has an internal thread 6-6-1, and the lower end face of flange II 6-6 fits against the upper end face of flange I 6-3.

[0026] The assembly process of connecting sleeve 6-4 and rod shell 6-12 is as follows: First, align the outer conical surface 6-4-1 of connecting sleeve 6-4 with the inner conical surface 6-12-1 of rod shell 6-12, apply axial pressure to make the conical surfaces of the two fit tightly together. The taper of the conical surface fit is 1:5 to ensure sealing and positioning accuracy. Then, fit flange I 6-3 onto the step 6-4-2 at the upper end of connecting sleeve 6-4, so that the lower end face of flange I 6-3 fits against the step surface of connecting sleeve 6-4. Finally, screw flange II 6-6 into the external thread 6-12-2 of rod shell 6-12 through internal thread 6-6-1, and tighten it until the lower end face of flange II 6-6 fits tightly against the upper end face of flange I 6-3, forming a detachable fastening structure.

[0027] The structure achieves positioning through a conical surface fit and reliable fastening through a flange and threaded pair. Operators only need to use a wrench to tighten the flange 6-6 of the II to complete the disassembly and assembly of the vibrator 6 housing, improving disassembly and assembly efficiency and facilitating the maintenance and replacement of internal components. Furthermore, in this invention, the roller cone 6-11 has a conical structure, and its surface is carburized and quenched. The carburized layer depth is 0.8-1.2 mm, and the quenching hardness is HRC58-62. An annular raceway 6-13 is integrally fixed in the middle of the inner wall of the rod shell 6-12. The inner conical surface of the raceway 6-13 is adapted to the outer conical surface of the roller cone 6-11, and the two are in a pure rolling fit without sliding. The fit clearance is controlled to be 0.01-0.03 mm. When the roller cone 6-11 rotates under the drive of the spring flexible shaft 5, the outer conical surface of the roller cone 6-11 rolls purely along the inner conical surface of the raceway 6-13, generating periodic centrifugal force, which in turn drives the vibrating rod 6 to vibrate as a whole. Inside the rod housing 6-12, bearings 6-7 are symmetrically mounted on both sides near the tapered roller 6-11. These bearings 6-7 are deep groove ball bearings with a precision grade of not less than P6 and a radial runout error of ≤0.015mm. The inner ring of the bearing 6-7 is interference-fitted with the central axis of the tapered roller 6-11 with an interference of 0.005-0.01mm, while the outer ring is transition-fitted with the inner wall of the rod housing 6-12. A washer 6-8 is provided on the outside of the bearing 6-7. The washer 6-8 is made of 65Mn steel and has a phosphated surface. It is used to limit the axial displacement of the bearing 6-7 and prevent the bearing 6-7 from moving due to vibration during operation.

[0028] An oil seal seat 6-10 is fitted inside the rod shell 6-12 near the upper opening. The oil seal seat 6-10 has a ring structure and is fixedly connected to the inner wall of the rod shell 6-12 by a set screw. An oil seal 6-9 is embedded in the inner hole of the oil seal seat 6-10. The oil seal 6-9 is made of fluororubber and has an oil resistance temperature range of -20℃ to 200℃, suitable for operation. Engine oil and dust in the environment.

[0029] Specifically, the interference fit between oil seal 6-9 and oil seal seat 6-10 is 0.02-0.05mm. This interference fit ensures the sealing performance of oil seal 6-9, prevents leakage of lubricating oil inside the rod shell 6-12, and also avoids deformation and damage to oil seal 6-9 due to excessive interference fit. The lower end of the bar shell 6-12 is detachably connected to the upper external thread of the pick body 6-14 via an internal thread. The end of the pick body 6-14 away from the bar shell 6-12 is detachably connected to the upper external thread of the pick head 6-15 via an internal thread. The pick head 6-15 is made of high manganese steel, and its surface is subjected to overall quenching treatment with a quenching hardness of not less than HRC50. Water quenching and cooling can extend the service life of the pick head 6-15 in ballast tamping operations and avoid frequent replacement. The gasoline engine 7 is an existing device. A single-cylinder four-stroke air-cooled gasoline engine can be selected and fixedly mounted on a mounting bracket on one side of the gearbox 3 by bolts. Its output shaft is arranged coaxially with the input shaft of the gearbox 3 to ensure the coaxiality and stability of power transmission. In this embodiment, the vibration parameters of the vibrator 6 during operation are controlled as follows: vibration frequency 160Hz, amplitude 1.2mm, achieved through the design of the conical surface parameters of the roller cone 6-11 and the raceway 6-13, and vibration acceleration 720m / s². 2 Through actual testing with a vibration tester under working conditions, it was verified that this parameter combination can enable ballast particles to obtain sufficient kinetic energy to achieve rapid compaction, while avoiding excessive vibration that could damage the track bed structure.

[0030] Working principle: During operation, turn on the throttle combination switch 2 to start the gasoline engine 7. The power of the gasoline engine 7 is transmitted to the spring flexible shaft 5 through the output shaft of the gearbox 3, and then through the spring positioning column 6-1 and the connector 6-5 in the vibrating rod 6 to drive the roller cone 6-11 to rotate. While the roller cone 6-11 rotates, its outer cone surface rolls without slipping along the inner cone surface of the raceway 6-13 fixed in the rod shell 6-12. This is equivalent to the meshing and rotation of a bevel gear with a very small module and an internal gear ring, thereby generating excitation force. This force is transmitted through the rod shell 6-12 and the pick body 6-14 to the pick head 6-15, tamping the ballast in the track bed, overcoming the frictional resistance between the ballasts, causing them to move and rearrange relative to each other, filling the gaps under the ballast, and thus achieving the purpose of compacting the ballast and stabilizing the track bed.

[0031] Since the roller cone 6-11 is required to roll without slippage along the inner conical surface of the raceway 6-13, there must be no oil inside the vibrator 6. If oil gets in, it will cause slippage, causing the vibrator 6 to stop vibrating or vibrate weakly. Therefore, the vibrator 6 needs to be removed and cleaned.

[0032] The disassembly method of this invention is as follows: Loosen the threaded pair between flange I 6-3 and flange II 6-6, remove flange II 6-6, and the connecting sleeve 6-4 can be separated from the rod shell 6-12. Unscrew the pick body 6-14 (left thread) together with the pick head 6-15, then clamp the connector 6-5 and rotate the roller 6-11 (right thread). The roller 6-11 will then be separated from the connector 6-5. Hold the rod shell 6-12 and gently tap the roller 6-11, which extends out of the rod shell 6-12, vertically against the wooden board. All parts inside the vibrating rod 6, except for the raceway 6-13 (the raceway is a non-detachable connection), can be removed. Afterwards, remove dust, oil, and moisture from the surfaces of each part, wash them with clean gasoline, let them dry, and then reassemble them. The assembly process is done in reverse order, making disassembly and assembly more convenient and on-site maintenance easier.

[0033] This invention overcomes the shortcomings of existing tamping picks, such as complex structure, inconvenient disassembly and installation, and difficult on-site maintenance, through its quick-assembly and disassembly structure design. It meets the urgent needs of ballasted track tamping and maintenance, which require convenient disassembly and installation and easy on-site maintenance. The rubber spring achieves excellent vibration reduction effect, making the operation comfortable for users. According to the test results of the Engineering Quality Supervision and Inspection Center of the Ministry of Railways, the machine has strong adaptability, reliable operation, high production efficiency, good tamping effect, novel design, reasonable structure, simple maintenance, and safety and reliability.

[0034] When this internal combustion tamping pick operates on ballasted railway lines with a ballast particle size of 20-60mm, the vibration frequency remains stable at 160Hz±2Hz, the amplitude deviation does not exceed 0.1mm, and the vibration acceleration fluctuation range is 720±30m / s². 2 During a concentrated maintenance operation on the Shanghai-Kunming Railway under a certain railway bureau group company, 20 tamping picks of this invention operated continuously for 30 days, tamping an average of 1,200 sleepers per day, which is significantly more efficient than tamping picks of traditional equipment. During on-site maintenance, the time spent on a single cleaning and maintenance can be controlled within 10 minutes, which is also significantly shorter than that of traditional tamping picks. The number of work delays caused by inconvenient disassembly and assembly has also decreased, fully verifying the advantages of this invention in terms of structural reliability, ease of operation and economy.

[0035] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An internal combustion tamping pick that is easy to assemble and disassemble, characterized in that, include: Handle (1), the handle (1) is provided with a throttle combination switch (2) for controlling power output, the throttle combination switch (2) can control the start and stop of the power source and the output power; The gearbox (3) has a vibration damping component at its lower part. The vibration damping component is a rubber spring (4). The handle (1) is installed on the upper end of the rubber spring (4). Vibration damping is achieved through the rubber spring (4) to improve operating comfort. A spring-loaded flexible shaft (5) is connected to the output end of the gearbox (3) for transmitting power; The vibratory rod (6) is installed at the lower part of the rubber spring (4) and is used to tamp the ballast of the track bed. The spring flexible shaft (5) is detachably connected to the roller (6-11) inside the vibratory rod (6) through the spring positioning column (6-1) and the connector (6-5) inside the vibratory rod (6). The connecting sleeve (6-4) of the vibratory rod (6) and the rod shell (6-12) are fitted by the conical surface and are fitted with flange I (6-3) and flange II (6-6) to form a detachable fastening structure, so as to realize the quick assembly and disassembly of the vibratory rod (6). The gasoline engine (7) serves as a power source, and its output shaft is connected to the spring flexible shaft (5) via the gearbox (3) to form a power transmission path.

2. The easily detachable internal combustion tamping pick according to claim 1, characterized in that, The inner wall of the II flange (6-6) is provided with an internal thread (6-6-1), the rod shell (6-12) is provided with an inner conical surface (6-12-1) that is adapted to the outer conical surface (6-4-1) of the connecting sleeve (6-4), and the outer wall of the rod shell (6-12) is also provided with an external thread (6-12-2) that is adapted to the internal thread (6-6-1) of the II flange (6-6).

3. The easily detachable internal combustion tamping pick according to claim 1, characterized in that, The lower end of the connecting sleeve (6-4) is integrally formed with an outer conical surface (6-4-1), and the upper end is integrally formed with a step (6-4-2) for fitting into flange I (6-3). The connecting sleeve (6-4) and the rod shell (6-12) are connected by the conical surface mating of the outer conical surface (6-4-1) and the inner conical surface (6-12-1), and flange I (6-3) and flange II (6-6) are fastened by a threaded pair.

4. The easily detachable internal combustion tamping pick according to claim 1, characterized in that, The vibrating rod (6) is also equipped with a bearing (6-7), a washer (6-8), an oil seal (6-9) and an oil seal seat (6-10) inside the rod shell (6-12). The inner wall of the rod shell (6-12) is integrally fixed with a raceway (6-13). The lower end of the rod shell (6-12) is detachably connected to a pick body (6-14) by a thread. The end of the pick body (6-14) away from the rod shell (6-12) is detachably connected to a pick head (6-15) by a thread.

5. The easily detachable internal combustion tamping pick according to claim 1, characterized in that, The number of rubber springs (4) is four, which are symmetrically installed on the lower part of the gearbox (3) through rubber spring clamps (6-2) to form a vibration damping connection assembly.

6. The easily detachable internal combustion tamping pick according to claim 4, characterized in that, The outer conical surface of the roller cone (6-11) and the inner conical surface of the raceway (6-13) are in a pure rolling fit without sliding.

7. The easily detachable internal combustion tamping pick according to claim 4, characterized in that, The oil seal (6-9) is made of fluororubber and the interference fit between it and the oil seal seat (6-10) is 0.02-0.05mm.

8. The easily detachable internal combustion tamping pick according to claim 1, characterized in that, The outer surface of the handle (1) is covered with an anti-slip rubber layer, and the hardness of the rubber layer is 60-70 Shore A.

9. The easily detachable internal combustion tamping pick according to claim 4, characterized in that, The pickaxe head (6-15) is made of high manganese steel and its surface is hardened to a hardness of not less than HRC50. The bearing (6-7) is a deep groove ball bearing and its precision grade is not less than P6.

10. The easily detachable internal combustion tamping pick according to claim 1, characterized in that, The vibration frequency of the vibrating rod (6) during operation is 160Hz, the amplitude is 1.2mm, and the vibration acceleration is 720m / s². 2 .

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