A combustion rammer with convenient dismounting

By using rubber springs for vibration damping and flange conical surface matching, the problem of inconvenient disassembly and installation of tamping picks is solved, making it easy to disassemble and install and maintain on site, thereby improving tamping efficiency and equipment reliability.

CN120867147BActive Publication Date: 2026-02-27ANYANG JINGYUAN RAILWAY EQUIP
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Patent Information

Application Number
CN202511221348.8
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Priority Date
2024-12-11
Filing Date
2025-08-29
Publication Date
2026-02-27
Estimated Expiration
2045-08-29

AI Technical Summary

Technical Problem

Existing tamping picks have complex structures, are inconvenient to disassemble and install, and are difficult to maintain on-site, making it difficult to meet the needs of tamping and maintenance of ballasted lines.

Method used

The design incorporates a rubber spring for vibration damping, combined with a detachable fastening structure featuring a flange and a conical surface. The vibration damping effect of the rubber spring enhances operational comfort, while the conical surface and threaded joint enable quick assembly and disassembly of the vibrator.

Benefits of technology

It facilitates easy disassembly and assembly, simplifies on-site maintenance, improves operational comfort and equipment reliability, reduces maintenance costs and construction time, and increases tamping efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present application relates to the technical field of railway maintenance equipment, and discloses a convenient-to-disassemble internal combustion rammer, which comprises a handle, a throttle combined switch for controlling power output is arranged on the handle, the throttle combined switch can control the start and stop of a power source and the output power, a gear box, a damping component is arranged at the lower part of the gear box, the damping component is a rubber spring, the handle is installed at the upper end of the rubber spring, and damping is realized through the rubber spring to improve operation comfort, a spring flexible shaft is in transmission connection with the output end of the gear box and is used for transmitting power, a vibrating rod is installed at the lower part of the rubber spring and is used for ramming ballast, and a gasoline engine is used as the power source, the output shaft of the gasoline engine is in transmission connection with the spring flexible shaft through the gear box. Through the optimization of the structural design, the present application has compact layout, the functions of various components are clear, the performance of the equipment is ensured, the replacement frequency of the components and the maintenance cost are reduced, and the operation efficiency is improved.
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Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of railway maintenance equipment, in particular to an internal combustion rammer. BACKGROUND

[0002] It is an important content of railway maintenance operation to use ramming machine to ram the ballast bed of ballast track and improve track smoothness and structural reliability.

[0003] At present, the small railway maintenance equipment for ramming ballast bed of ballast track generally includes various ramming machines, among which the small railway maintenance equipment is the most widely used, which uses the vibration generated by the ramming rod to overcome the frictional resistance between the ballast, so as to make the ballast relatively move and rearrange, fill the gap under the sleeper, and achieve the purpose of compacting ballast and stabilizing the ballast bed.

[0004] However, in the actual use process, these ramming hammers have some disadvantages such as complex structure, inconvenient disassembly and installation, and low efficiency of on-site maintenance, therefore, it is urgent to develop a new internal combustion ramming hammer which is reliable in operation, convenient to disassemble and assemble, comfortable to operate, and convenient to maintain on site, to meet the urgent needs of ballast track ramming maintenance. SUMMARY

[0005] In view of the shortcomings of the prior art, the present application provides an internal combustion ramming hammer which is convenient to disassemble and assemble, solves the problems of the ramming hammers of the prior art, such as complex structure, inconvenient disassembly and installation, and difficult on-site maintenance.

[0006] To achieve the above purpose, the present application realizes the following technical scheme: an internal combustion ramming hammer convenient to disassemble and assemble, comprising:

[0007] A handle is provided with a throttle combination switch for controlling power output, and the throttle combination switch can control the start and stop of the power source and the output power;

[0008] A gear box is provided with a damping component at the lower part, the damping component is a rubber spring, the handle is installed at the upper end of the rubber spring, and the damping is realized by the rubber spring to improve the operation comfort;

[0009] A spring flexible shaft is in transmission connection with the output end of the gear box, and is used for transmitting power;

[0010] A vibrating rod is installed at the lower part of the rubber spring for tamping ballast, the spring shaft is detachably connected with the vibrating rod through the spring positioning column in the vibrating rod, the joint and the rolling cone in the vibrating rod, the connecting sleeve and the rod shell of the vibrating rod are matched through the conical surface, and the detachable fastening structure is formed by matching the I flange and the II flange, so that the vibrating rod can be quickly disassembled and assembled.

[0011] The gasoline engine is used as a power source, the output shaft of the gasoline engine is connected with the spring shaft through the gear box, and the power transmission path is formed.

[0012] Preferably, the inner wall of the II flange is provided with internal threads, the rod shell is provided with an internal conical surface matched with the external conical surface of the connecting sleeve, and the outer wall of the rod shell is also provided with external threads matched with the internal threads of the II flange.

[0013] Preferably, the lower end of the connecting sleeve is integrally formed with an external conical surface, and the upper end is integrally formed with a step for sleeving the I flange, the connecting sleeve is connected with the rod shell through the matching of the external conical surface and the internal conical surface, and the I flange and the II flange are fastened through the threaded pair.

[0014] Preferably, the rod shell of the vibrating rod is further provided with a bearing, a gasket, an oil seal and an oil seal seat, and the inner wall of the rod shell is integrally and fixedly provided with a rolling track, the lower end of the rod shell is detachably connected with a pick body through threads, and the end of the pick body away from the rod shell is detachably connected with a pick head through threads.

[0015] Preferably, the number of rubber springs is two, and the rubber springs are symmetrically installed at the lower part of the gear box through the rubber spring clamping plate to form a damping connection assembly.

[0016] Preferably, the external conical surface of the rolling cone and the internal conical surface of the rolling track are matched in a non-sliding pure rolling manner.

[0017] Preferably, the oil seal is made of fluororubber material, and the interference fit amount between the oil seal and the oil seal seat is 0.02-0.05mm.

[0018] Preferably, the outer surface of the handle is covered with a non-slip rubber layer, and the hardness of the rubber layer is 60-70 degrees of Shore.

[0019] Preferably, the pick head is made of high manganese steel material, the surface is quenched, the quenching hardness is not less than HRC50, the bearing is a deep groove ball bearing, and the bearing precision grade is not less than P6 level.

[0020] Preferably, the vibration frequency of the vibrating rod during operation is 160Hz, the amplitude is 1.2mm, and the vibration acceleration is 720m / s 2 .

[0021] The present application provides a convenient disassembly and assembly of internal combustion tamping pick. It has the following advantages:

[0022] 1. The present application overcomes the disadvantages of the existing tamping pick, such as inconvenient disassembly and installation, difficult on-site maintenance, etc., by structural improvement design, and meets the requirements of simple structure, convenient disassembly and installation, and convenient on-site maintenance for ballast track tamping maintenance, has good damping effect of rubber spring, comfortable operation, and is proved by railway construction units to have strong adaptability, reliable operation, high production efficiency, and good tamping effect;

[0023] 2. The present application has practicality and economy in structural design, compact overall structural layout, clear function division of each component, rubber spring having damping and connecting functions, flange and taper surface having positioning and sealing functions, simplified structure while ensuring equipment performance, reliable equipment operation, convenient maintenance, reduced component replacement frequency and maintenance cost, improved operation efficiency, reduced overall construction cost, and good economy. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a schematic diagram of the overall structure of the present application;

[0025] Figure 2 is a schematic diagram of the internal structure of the vibration rod in Figure 1 ;

[0026] Figure 3 is a schematic diagram of the structure of the rubber spring clamp plate in Figure 2 ;

[0027] Figure 4 is a schematic diagram of the structure of the connecting sleeve in Figure 2 ;

[0028] Figure 5 is a schematic diagram of the structure of the I flange in Figure 2 ;

[0029] Figure 6 is a schematic diagram of the structure of the II flange in Figure 2 ;

[0030] Figure 7 is a schematic diagram of the structure of the rod shell in Figure 2 .

[0031] Among them, 1, handle; 2, throttle combination switch; 3, gear box; 4, rubber spring; 5, spring flexible shaft; 6, vibration rod; 6-1, spring positioning column; 6-2, rubber spring clamp plate; 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, rolling cone; 6-12, rod shell; 6-13, raceway; 6-14, pick body; 6-15, pick head; 7, gasoline engine. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the specification of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0033] Please refer to the drawings attached Figure 1 - the drawings attached Figure 7 The embodiment of the present application provides a convenient disassembly and assembly internal combustion rammer, mainly used for ramming operation of railway bed ballast, which is composed of a handle 1, a throttle combined switch 2, a gear box 3, a rubber spring 4, a spring flexible shaft 5, a vibrating rod 6 and a gasoline engine 7 core components, and each component forms a complete power transmission and operation system through a specific connection mode, and has the functions of vibration reduction, convenient disassembly and assembly and stable operation.

[0034] Specifically, in the present application, the handle 1 is a key component held by an operator, and the outer surface is covered with a layer of anti-skid rubber layer, the hardness of the rubber layer is 60-70 degrees of Shore, this hardness range can ensure the comfort of the operator when holding, and can effectively prevent the handle from slipping due to hand sweating or vibration during operation, and improve the operation safety.

[0035] The throttle combined switch 2 for controlling power output is integrally arranged on the handle 1, and the throttle combined switch 2 is electrically connected with the control system of the gasoline engine 7 through wires, and the operator can adjust the different gears of the throttle combined switch 2 to realize the start-stop control of the gasoline engine 7, when the switch is turned to the start gear, the gasoline engine 7 starts to run, and when the switch is turned to the off gear, the gasoline engine 7 stops working.

[0036] At the same time, by rotating the adjusting knob of the throttle combined switch 2, the oil supply flow of the gasoline engine 7 can be changed, and then the output power is controlled to meet the demand of different bed ballast ramming operation for power.

[0037] The gear box 3 is an intermediate core component of power transmission, and a gear set is arranged inside the gear box 3, the gear modulus is designed to be 2.5-3mm according to the power transmission demand, which is used to convert the rotating speed and torque of the output shaft of the gasoline engine 7 into power parameters suitable for the spring flexible shaft 5.

[0038] A damping component is arranged on the lower part of the gear box 3, the damping component is a rubber spring 4, and the number of the rubber spring 4 is two, the two rubber springs 4 are symmetrically installed on the two side mounting seats of the lower part of the gear box 3 through a rubber spring clamp plate 6-2, forming a complete damping connection assembly.

[0039] The rubber spring 4 is made of butyronitrile rubber, and has an elastic modulus of 8-10 MPa, so as to effectively absorb the vibration energy transmitted by the gear box 3 and the vibration rod 6;

[0040] The lower end of the handle 1 is fixedly installed on the upper ends of the two rubber springs 4, and the vibration is buffered and weakened by the elastic deformation of the rubber springs 4 during operation, so as to reduce the vibration intensity transmitted to the handle 1 and significantly improve the operation comfort of the operator, thereby avoiding hand fatigue caused by long-term operation.

[0041] The spring flexible shaft 5 is a flexible power transmission component, one end of which is in transmission connection with the output end of the gear box 3 through a shaft coupling, and the other end extends into the vibration rod 6 and is detachably connected with a rolling cone 6-11 in the vibration rod 6, and the specific connection structure is that the end of the spring flexible shaft 5 is matched with one end of a spring positioning column 6-1 in the vibration rod 6 through a spline, the other end of the spring positioning column 6-1 is fixedly connected with a joint 6-5 through a thread, and the end of the joint 6-5 away from the spring positioning column 6-1 is detachably connected with a central shaft hole of the rolling cone 6-11 through a thread, so that the spring flexible shaft 5 and the rolling cone 6-11 can be easily disassembled and maintained, and the stability of power transmission is ensured.

[0042] The main power transmission path of the present application is that the gasoline engine 7 is used as a power source, the output shaft of the gasoline engine 7 is in transmission connection with a driving gear inside the gear box 3, the driving gear drives a driven gear to rotate, the driven gear is fixedly connected with the output shaft of the gear box 3, and then drives the spring flexible shaft 5 to rotate, the spring flexible shaft 5 transmits power to the rolling cone 6-11 through the spring positioning column 6-1 and the joint 6-5, and finally drives the vibration rod 6 to realize vibration ramming operation.

[0043] The vibration rod 6 is a core operation component for realizing ballast ramming, and the overall structure thereof comprises a spring positioning column 6-1, a rubber spring clamping plate 6-2, a I flange 6-3, a connecting sleeve 6-4, a joint 6-5, a II flange 6-6, a bearing 6-7, a gasket 6-8, an oil seal 6-9, an oil seal seat 6-10, a rolling cone 6-11, a rod shell 6-12, a rolling way 6-13, a pick body 6-14 and a pick head 6-15, and the structures and matching relationships of the components are as follows.

[0044] The connecting sleeve 6-4 has a stepped cylindrical structure, the lower end of the connecting sleeve 6-4 is integrally formed with an outer taper surface 6-4-1, and the upper end of the connecting sleeve 6-4 is integrally formed with a step 6-4-2 for sleeving the I flange 6-3; the rod shell 6-12 is a cylindrical hollow shell, the inner wall of the upper end of the rod shell 6-12 is provided with an inner taper surface 6-12-1 matched with the outer taper surface 6-4-1 of the connecting sleeve 6-4, and the outer wall of the upper end of the rod shell 6-12 is provided with an outer thread 6-12-2 matched with the inner thread 6-6-1 of the II flange 6-6; the inner wall of the II flange 6-6 is provided with the inner thread 6-6-1, and the lower end surface of the II flange 6-6 is matched with the upper end surface of the I flange 6-3.

[0045] The assembly process of the connecting sleeve 6-4 and the rod shell 6-12 is as follows: first, the outer tapered surface 6-4-1 of the connecting sleeve 6-4 is aligned with the inner tapered surface 6-12-1 of the rod shell 6-12, axial pressure is applied to make the two tapered surfaces tightly fit, the taper of the tapered surface fit is 1:5, the sealing and positioning accuracy is ensured, then the I flange 6-3 is sleeved on the step 6-4-2 at the upper end of the connecting sleeve 6-4, the lower end surface of the I flange 6-3 is in close contact with the step surface of the connecting sleeve 6-4, finally, the II flange 6-6 is screwed through the internal thread 6-6-1 and the external thread 6-12-2 of the rod shell 6-12, and is screwed tightly until the lower end surface of the II flange 6-6 is in close contact with the upper end surface of the I flange 6-3, forming a detachable fastening structure.

[0046] The structure realizes positioning through tapered surface fit and reliable fastening through the flange and thread pair, and the operator only needs to use a wrench to screw the II flange 6-6 to complete the disassembly and assembly of the vibration rod 6 shell, which improves the disassembly and assembly efficiency and facilitates the maintenance and replacement of internal components.

[0047] Further, the roller cone 6-11 is in a conical structure, the surface is subjected to carburizing quenching treatment, the carburizing layer depth is 0.8-1.2mm, and the quenching hardness is HRC58-62; the inner wall of the rod shell 6-12 is integrally fixed with an annular raceway 6-13 in the middle, the inner tapered surface of the raceway 6-13 is matched with the outer tapered surface of the roller cone 6-11, and the two are in non-sliding pure rolling fit, the fit clearance is controlled to be 0.01-0.03mm, when the roller cone 6-11 rotates under the driving of the spring flexible shaft 5, the outer tapered surface of the roller cone 6-11 rolls along the inner tapered surface of the raceway 6-13, periodic centrifugal force is generated, and the vibration rod 6 is driven to vibrate as a whole.

[0048] The two sides of the rod shell 6-12 close to the roller cone 6-11 are symmetrically provided with bearings 6-7, the bearings 6-7 are deep groove ball bearings, the accuracy grade is not less than P6 level, the radial runout error is ≤0.015mm, the inner ring of the bearing 6-7 is in interference fit with the central shaft of the roller cone 6-11, the interference amount is 0.005-0.01mm, and the outer ring is in transition fit with the inner wall of the rod shell 6-12; a gasket 6-8 is arranged outside the bearing 6-8, the gasket 6-8 is made of 65Mn steel material, the surface is subjected to phosphating treatment, and is used for limiting the axial displacement of the bearing 6-7 and preventing the bearing 6-7 from moving due to vibration during operation.

[0049] The oil seal seat 6-10 is assembled in the rod shell 6-12 close to the upper end opening, the oil seal seat 6-10 is in an annular structure and is fixedly connected with the inner wall of the rod shell 6-12 through a locking screw; the 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 material and is resistant to oil temperature ranging from-20℃ to 200℃, is suitable for operation

[0050] The oil in the environment and dust.

[0051] Specifically, the interference fit amount of the oil seal 6-9 and the oil seal seat 6-10 is 0.02-0.05mm, which can ensure the sealing performance of the oil seal 6-9, prevent the lubricating oil in the rod shell 6-12 from leaking, and also avoid the deformation and damage of the oil seal 6-9 caused by excessive interference.

[0052] The lower end of the rod shell 6-12 is detachably connected to the upper end of the pick body 6-14 through internal threads and external threads, and the end of the pick body 6-14 away from the rod shell 6-12 is detachably connected to the upper end of the pick head 6-15 through internal threads and external threads. The pick head 6-15 is made of high manganese steel, and its surface is subjected to overall quenching treatment with a quenching hardness not less than HRC50 and water quenching cooling, which can prolong the service life of the pick head 6-15 in ballast tamping operation and avoid frequent replacement.

[0053] The gasoline engine 7 is a prior art device, which can be a single-cylinder four-stroke air-cooled gasoline engine. The gasoline engine 7 is fixedly installed on one side of the gear box 3 through a bolt, and the output shaft of the gasoline engine 7 is coaxially arranged with the input shaft of the gear box 3 to ensure the coaxiality and stability of power transmission.

[0054] In this embodiment, the vibration parameters of the vibrating rod 6 during operation are controlled as follows: vibration frequency 160Hz, amplitude 1.2mm, which are realized through the taper surface parameter design of the rolling cone 6-11 and the rolling way 6-13, and vibration acceleration 720m / s 2 The parameter combination can make the ballast particles obtain sufficient kinetic energy to achieve rapid compaction, while avoiding damage to the track structure caused by excessive vibration.

[0055] Working principle: when working, the throttle combination switch 2 is turned on, the gasoline engine 7 is started, and the power of the gasoline engine 7 is transmitted to the spring flexible shaft 5 through the output shaft of the gear box 3, and then the spring positioning column 6-1 and the joint 6-5 in the vibrating rod 6 drive the rolling cone 6-11 to rotate. The outer taper surface of the rolling cone 6-11 performs pure rolling without sliding along the inner taper surface of the rolling way 6-13 fixed in the rod shell 6-12, which is equivalent to the rotation of the gear with the smallest modulus and the inner gear ring, thereby generating exciting force. The exciting force is transmitted to the pick head 6-15 through the rod shell 6-12 and the pick body 6-14 to tamping the ballast of the track bed, overcome the frictional resistance between the ballast, make it relative movement and rearrangement, fill the gap under the pillow, so as to achieve the purpose of compacting the ballast and stabilizing the track bed.

[0056] Since it is required that the rolling cone 6-11 performs pure rolling without sliding along the inner taper surface of the rolling way 6-13, there should be no oil stains in the vibrating rod 6. If oil stains enter, it will cause sliding, resulting in no vibration or weak vibration of the vibrating rod 6, so it is necessary to disassemble and clean the vibrating rod 6.

[0057] The dismounting method of the present application is: loosening the threaded pair between the I flange 6-3 and the II flange 6-6, dismounting the II flange 6-6, connecting the sleeve 6-4 to separate from the rod shell 6-12, unscrewing the pick body 6-14 (left thread) together with the pick head 6-15, then clamping the joint 6-5 to rotate the roll cone 6-11 (right thread), the roll cone 6-11 is separated from the joint 6-5, and then holding the rod shell 6-12, the roll cone 6-11 extending out of the rod shell 6-12 is lightly bumped vertically on the wood board, and the parts in the vibration rod 6 can be completely removed (the rolling way is not dismountable) except the rolling way 6-13.

[0058] Then remove the dust, oil stains and moisture on the surface of each part, wash with clean gasoline, and then reassemble after drying.

[0059] The present application overcomes the disadvantages of the existing tamping pick, such as complex structure, inconvenient dismounting and installation, and difficult on-site maintenance, through the structure design of quick dismounting, and meets the urgent need of convenient dismounting and on-site maintenance for ballast track tamping maintenance, and the rubber spring provides excellent damping effect, the user operates comfortably, and the detection by the Railway Department Engineering Quality Supervision and Inspection Center shows that the machine has strong adaptability, reliable operation, high production efficiency, good tamping effect, novel design, reasonable structure, convenient maintenance, safety and reliability.

[0060] When the internal combustion tamping pick is used on the ballast track with a track bed ballast particle size of 20-60mm, the vibration frequency is stabilized at 160Hz±2Hz, the amplitude deviation is not more than 0.1mm, and the vibration acceleration fluctuation range is 720±30m / s 2 In the concentrated repair construction of the Shanghai-Kunming line of a railway bureau group company, 20 tamping picks of the present application are continuously operated for 30 days, with an average of 1200 tamped sleepers per day, which is obviously improved compared with the efficiency of the traditional tamping pick; during on-site maintenance, the time for single cleaning and maintenance can be controlled within 10 minutes, which is significantly shortened compared with the traditional tamping pick, the number of operation delays caused by inconvenient dismounting is also reduced, and the advantages of the present application in structural reliability, convenient operation and economy are fully verified.

[0061] Although the embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application 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; A 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 post (6-1) and the connector (6-5). The connecting sleeve (6-4) of the vibratory rod (6) and the rod shell (6-12) are fitted with a conical surface and form a detachable fastening structure with flange I (6-3) and flange II (6-6) to realize the quick assembly and disassembly of the vibratory rod (6). The inner wall of flange II (6-6) is provided with internal thread (6-6-1), and the rod shell (6-12) is provided with a connection to the connecting sleeve. (6-4) An inner conical surface (6-12-1) is adapted to the outer conical surface (6-4-1), and the outer wall of the rod shell (6-12) is also provided with an outer thread (6-12-2) adapted to the inner thread (6-6-1) of the II flange (6-6). 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 the I flange (6-3). The connecting sleeve (6-4) and the rod shell (6-12) are connected by the outer conical surface (6-4-1) and the inner conical surface (6-12-1) conical surface mating, and the I flange (6-3) and the II flange (6-6) are fastened by the thread pair. 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 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.

3. The easily detachable internal combustion tamping pick according to claim 1, characterized in that, The number of rubber springs (4) is two, 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.

4. The easily detachable internal combustion tamping pick according to claim 2, 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.

5. The easily detachable internal combustion tamping pick according to claim 2, 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.

6. 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.

7. The easily detachable internal combustion tamping pick according to claim 2, characterized in that, The pickaxe head (6-15) is made of high manganese steel and the surface is hardened to a hardness of not less than HRC50. The bearing (6-7) is a deep groove ball bearing and the bearing precision grade is not less than P6.

8. 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 .

Citation Information

Patent Citations

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