Internal combustion tamping pickaxe

Abstract

The utility model relates to the technical field of internal combustion tamping pickaxs, and discloses an internal combustion tamping pickaxe which comprises an internal combustion engine, a clutch is assembled below the internal combustion engine, a connecting piece is arranged below the clutch, a damping disc and a connecting plate are arranged below the connecting piece, a damper is assembled between the damping disc and the connecting plate, and the connecting plate is connected with the internal combustion engine. The lower portion of the connecting plate is fixedly connected to a corrugated pipe, a hollow shaft is arranged in the corrugated pipe, and the hollow shaft is connected with an internal combustion engine. According to the internal combustion tamping pickaxe, the arranged tamping head is matched with the four through holes formed in the tamping head, internal lubricating oil can be discharged, during operation, a hoop of the tamping head vibrates downwards to push stone ballasts, finally, the stone ballasts are tamped, the abrasion resistance of the hoop is improved, and the service life of the tamping head is prolonged; according to the non-equidistant thread semicircular eccentric shaft, a semicircular shaft generates radial vibration during high-speed rotation, and meanwhile, a non-equidistant thread semicircular eccentric shaft generates a vibration body of axial vibration.

Description

Technical Field

[0001] The utility model relates to the technical field of internal combustion tamping picks, in particular to an internal combustion tamping pick. Background Art

[0002] A tamping pick is a small-scale railway maintenance machine used in railway construction and maintenance operations, primarily for tamping ballast. Based on the power source, it can be divided into electric and internal combustion tamping picks; based on its structure, it can be divided into portable and split tamping picks; and based on its vibration mode, it can be divided into horizontal and vertical rotating shaft tamping picks. Existing tamping picks suffer from poor wear resistance and a short tamping head lifespan. Furthermore, the threaded eccentric shaft is relatively conventional, resulting in poor vibration performance. Summary of the Invention

[0003] In order to solve the above problems, that is, to solve the problems raised by the above background technology, the utility model proposes an internal combustion tamping pick, comprising an internal combustion engine, a clutch is installed at the bottom of the internal combustion engine, a connecting member is provided at the bottom of the clutch, a shock-absorbing disc and a connecting plate are provided at the bottom of the connecting member, a shock absorber is installed between the shock-absorbing disc and the connecting plate, the bottom of the connecting plate is fixedly connected to a bellows, a hollow shaft is provided inside the bellows, the hollow shaft is connected to the internal combustion engine, the bottom of the hollow shaft is fixedly connected to a skeleton oil seal, a sowing blade is provided at the bottom of the skeleton oil seal, a sealing ring is installed between the sowing blade and the skeleton oil seal, a threaded eccentric shaft is installed inside the sowing blade, the threaded eccentric shaft is connected to the hollow shaft, a tamping head is fixedly connected to the bottom of the threaded eccentric shaft, and an impeller is installed between the tamping head and the threaded eccentric shaft.

[0004] Preferably, the outer wall thread of the threaded eccentric shaft is an unequal pitch thread, which is used to generate radial vibration of the semicircular shaft during high-speed rotation, and at the same time, the unequal pitch semicircle generates axial vibration.

[0005] Preferably, the hollow shaft is a multi-umbrella-shaped hollow shock-absorbing shaft.

[0006] Preferably, the outer walls of the shock-absorbing disc, the connecting plate, the hollow shaft, the bellows and the threaded eccentric shaft are all corrugated for shock absorption and wave reduction.

[0007] Preferably, a hoop is fixedly connected to the outer wall of the tamping head, the end face of the tamping head is a spherical top surface, a countersunk hole is opened at the inner end of the tamping head, and a through hole is opened on the outer side wall of the tamping head.

[0008] Preferably, the through holes are stepped, and the number of the through holes is four.

[0009] Preferably, the threaded eccentric shaft comprises:

[0010] A threaded hole is provided on the inner ring of the left end of the threaded eccentric shaft;

[0011] An outer exhaust hole and an inner exhaust hole are respectively provided on the inner ring at the right end of the threaded eccentric shaft and inside the threaded eccentric shaft;

[0012] The right outer wall of the threaded eccentric shaft is provided with a spline.

[0013] The beneficial technical effects of the utility model are as follows: the internal combustion tamping pick can discharge internal lubricating oil through the tamping head provided and the four through holes opened thereon, and during operation, the hoop of the tamping head vibrates downward to push the ballast and finally the ballast is compacted, the wear resistance of the hoop is increased, and the service life of the tamping head is increased; the unequal pitch semicircular eccentric shaft generates radial vibration of the semicircular shaft when rotating at high speed, and the unequal pitch semicircle generates axial vibration of the vibrating body; the threaded hole at the upper end of the shaft is a universal joint at the lower end, the spline hole in the universal joint is a design in which the universal joint and the multi-umbrella-shaped hollow shaft are riveted in series, and this shaft has a vibration-damping and centering effect; the combination of the connecting plate and the shock-absorbing disc has a greater vibration-damping and wave-blocking effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic structural diagram of an internal combustion tamping pick is shown.

[0015] Figure 2 Shown Figure 1 Schematic diagram of the internal structure of the middle tamping head.

[0016] Figure 3 Shown Figure 1 Schematic diagram of the internal structure of the medium thread eccentric shaft.

[0017] Reference numerals

[0018] 1. Tamping head; 101. Spherical top surface; 102. Hoop; 103. Through hole; 104. Countersunk hole;

[0019] 2. Impeller;

[0020] 3. Threaded eccentric shaft; 301. Threaded hole; 302. Internal exhaust hole; 303. Spline; 304. External exhaust hole;

[0021] 4. Bellows; 5. Hollow shaft; 6. Connecting plate; 7. Shock absorber plate; 8. Internal combustion engine; 9. Clutch; 10. Connecting piece; 11. Shock absorber; 12. Skeleton oil seal; 13. Sealing ring; 14. Sowing blade. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0023] See also Figure 1As shown, the utility model proposes an internal combustion tamping pick, including an internal combustion engine 8, a clutch 9 is installed below the internal combustion engine 8, a connecting member 10 is provided below the clutch 9, a shock-absorbing disc 7 and a connecting plate 6 are provided below the connecting member 10, a shock absorber 11 is installed between the shock-absorbing disc 7 and the connecting plate 6, the connecting plate 6 is fixedly connected to the bellows 4 below, a hollow shaft 5 is provided inside the bellows 4, the hollow shaft 5 is connected to the internal combustion engine 8, the hollow shaft 5 is a multi-umbrella-shaped hollow shock-absorbing shaft, the hollow shaft 5 is fixedly connected to the skeleton oil seal 12 below, a sowing blade 14 is provided below the skeleton oil seal 12, a sealing ring 13 is installed between the sowing blade 14 and the skeleton oil seal 12, a threaded eccentric shaft 3 is installed inside the sowing blade 14, the threaded eccentric shaft 3 is connected to the hollow shaft 5, a tamping head 1 is fixedly connected below the threaded eccentric shaft 3, and an impeller 2 is installed between the tamping head 1 and the threaded eccentric shaft 3.

[0024] Specifically: the outer wall thread of the threaded eccentric shaft 3 is an unequal pitch thread, which is used to generate radial vibration of the semicircular shaft during high-speed rotation, and at the same time, the unequal pitch semicircle generates axial vibration. The outer wall of the tamping head is fixed with a hoop, the end face of the tamping head 1 is a spherical top surface 101, and a countersunk hole 104 is opened at the inner end of the tamping head 1. The outer side wall of the tamping head 1 is opened with a through hole 103, and the through hole 103 is stepped. There are four through holes 103.

[0025] Specifically: the threaded eccentric shaft 3 includes:

[0026] The threaded hole 301 is provided on the inner circle of the left end of the threaded eccentric shaft 3;

[0027] An outer exhaust hole 304 and an inner exhaust hole 302 are respectively opened on the inner ring of the right end of the threaded eccentric shaft 3 and inside the threaded eccentric shaft 3;

[0028] A spline 303 is provided on the right outer wall of the threaded eccentric shaft 3 .

[0029] Furthermore, the outer walls of the shock absorbing plate 7, the connecting plate 6, the hollow shaft 5, the bellows 4 and the threaded eccentric shaft 3 are all corrugated for shock absorption and wave reduction.

[0030] The working principle of this embodiment is as follows: the internal combustion engine drives the clutch to transmit the multi-umbrella hollow vibration damping shaft. The lower end of the multi-umbrella hollow vibration damping shaft is riveted to a splined universal joint. The splined universal joint slides with the splined end of the threaded eccentric shaft and transmits the rotational speed. The high-speed rotation of the eccentric shaft generates a left-right vibration excitation force and a vertical vibration impact force. The excitation and impact forces are transmitted through the bearings at both ends of the threaded eccentric shaft to the bearing seat sleeve and the conical tamping head. The three vibrating blades on the high-frequency vibration bearing sleeve and the second-stage ring hoop of the conical tamping head produce a radially enlarged vibration surface and an axial impact surface, ultimately compacting the roadbed ballast.

[0031] The beneficial technical effects of the present utility model are as follows: This new type of internal combustion tamping pick is driven by an internal combustion engine, which drives a clutch to transmit a multi-umbrella-shaped hollow damping shaft. The lower end of the multi-umbrella-shaped hollow damping shaft is riveted with a universal joint with splines. The spline universal joint is in sliding fit with the spline shaft end of the threaded eccentric shaft and transmits the rotational speed. The high-speed rotating eccentric shaft generates an exciting force for left and right vibration and an impact force for up and down vibration. The exciting force and the impact force are transmitted through the bearings at both ends of the threaded eccentric shaft to the bearing seat sleeve and the conical tamping head. The three vibrating blades on the high-frequency vibrating bearing sleeve and the second-order hoop of the conical tamping head generate a radially increasing vibration surface and an axial impact surface, finally compacting the ballast of the roadbed and completing the roadbed tamping operation.

[0032] New type of internal combustion tamping pick: It has a specific multi-stage vibration damping and wave reduction structure, such as a wave tube, a connecting plate stamped from two layers of thin plates, two-layer rubber shock absorbers, a damping disc (formed by welding two connecting plates together), and a U-shaped handle, all of which have the function of vibration damping and wave reduction. When an operator is working, holding the handle, he can slightly feel the advantage of vibration. The vibrating body of the tamping eccentric shaft has the characteristics of an exciting force for radial vibration and an impact force for axial vibration. The bearings at both ends of the high-speed rotating vibrating body of the eccentric shaft are lubricated and cooled by the impeller to convey lubricating oil.

[0033] The transmission structure is driven by an internal combustion engine, which drives a clutch to transmit a multi-umbrella-shaped hollow damping shaft. The lower end of the multi-umbrella-shaped hollow damping shaft is riveted with a universal joint with splines. The spline universal joint is in sliding fit with the spline shaft end of the threaded eccentric shaft and transmits the rotational speed. The threaded eccentric shaft drives the impeller.

[0034] Although the present utility model has been described with reference to the preferred embodiments, various improvements can be made to it and components therein can be replaced with equivalents without departing from the scope of the present utility model. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The present utility model is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

[0035] In addition, it should be noted that in the description of the present utility model, unless otherwise clearly specified and defined, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0036] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. An internal combustion tamping pick, characterized in that: The invention comprises an internal combustion engine (8), a clutch (9) is provided below the internal combustion engine (8), a connecting member (10) is provided below the clutch (9), a shock absorbing disc (7) and a connecting plate (6) are provided below the connecting member (10), a shock absorber (11) is provided between the shock absorbing disc (7) and the connecting plate (6), a bellows (4) is fixedly connected to the connecting plate (6) below, a hollow shaft (5) is provided inside the bellows (4), the hollow shaft (5) is connected to the internal combustion engine (8), and the The hollow shaft (5) is fixedly connected to a skeleton oil seal (12) below, a sowing blade (14) is provided below the skeleton oil seal (12), a sealing ring (13) is installed between the sowing blade (14) and the skeleton oil seal (12), a threaded eccentric shaft (3) is installed inside the sowing blade (14), the threaded eccentric shaft (3) is connected to the hollow shaft (5), a tamping head (1) is fixedly connected below the threaded eccentric shaft (3), and an impeller (2) is installed between the tamping head (1) and the threaded eccentric shaft (3).

2. An internal combustion tamping pick according to claim 1, characterized in that: The outer wall thread of the threaded eccentric shaft (3) is an unequal pitch thread, which is used to generate radial vibration of the semicircular shaft during high-speed rotation, while the unequal pitch semicircle generates axial vibration.

3. An internal combustion tamping pick according to claim 1, characterized in that: The hollow shaft (5) is a multi-umbrella-shaped hollow shock-absorbing shaft.

4. An internal combustion tamping pick according to claim 1, characterized in that: The outer walls of the shock-absorbing disc (7), the connecting plate (6), the hollow shaft (5), the bellows (4) and the threaded eccentric shaft (3) are all corrugated for shock absorption and wave reduction.

5. An internal combustion tamping pick according to claim 1, characterized in that: The outer wall of the tamping head (1) is fixedly connected with a hoop (102), the end surface of the tamping head (1) is a spherical top surface (101), a countersunk hole (104) is opened at the inner end of the tamping head (1), and a through hole (103) is opened on the outer side wall of the tamping head (1).

6. An internal combustion tamping pick according to claim 5, characterized in that: The through holes (103) are stepped, and there are four through holes (103).

7. An internal combustion tamping pick according to claim 1, characterized in that: The threaded eccentric shaft (3) comprises: A threaded hole (301), the threaded hole (301) is opened on the inner circle of the left end of the threaded eccentric shaft (3); An outer exhaust hole (304) and an inner exhaust hole (302) are respectively formed on the inner ring at the right end of the threaded eccentric shaft (3) and inside the threaded eccentric shaft (3); The right outer wall of the threaded eccentric shaft (3) is provided with a spline (303).

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