Short turnout steel rail drilling machine

Abstract

The utility model relates to the technical field of drilling machines, in particular to a short turnout steel rail drilling machine. Comprising a clamp and a drilling machine installed on the clamp. The drilling machine comprises a driving mechanism which comprises a driving motor, a secondary planetary transmission mechanism and an output power shaft; the motor and the secondary planetary transmission mechanism are arranged in an upper installation cavity and a lower installation cavity of the machine shell respectively, the output end of the driving motor is connected with the input end of the secondary planetary transmission mechanism in a meshed transmission mode, and the output end of the secondary planetary transmission mechanism is connected with the upper end of the output power shaft in a locked mode. The drill bit mechanism comprises a sliding shaft sleeve, a flat shaft, a flat sleeve and a drill bit; the sliding shaft sleeve is transversely assembled in the machine shell in a sliding mode. Through the arrangement of the two-stage planetary transmission mechanism, the transmission ratio can be improved, large torque can be output, and the advantages that the load power for model selection of the driving motor is smaller, and energy consumption is low are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling machines, in particular to a short turnout rail drilling machine. Background Art

[0002] The drilling machine is a tool for drilling holes in railway rails. It is a tool for railway engineering and electrical construction, maintenance and emergency repair operations; it is suitable for drilling operations in existing line reconstruction and new railway construction. The rail drilling machines currently used mainly include internal combustion rail drilling machines and external power supply AC electric drilling machines, both of which are suitable for field operations. For example, a lithium-ion rail drilling device with publication number CN110258211A discloses a transmission mechanism including a transmission shaft, and the transmission shaft transmits power and torque to the drilling mechanism through a planetary gear assembly and a bevel gear assembly. However, the above-mentioned transmission mechanism is a primary transmission, resulting in a low transmission ratio and a small output torque. Therefore, when the torque output by the transmission mechanism is small, in order to meet the same work requirements, the load power of the drive motor selection is larger and the energy consumption is high; at the same time, the fixed length of the existing drilling machine is much larger than 190mm, and it cannot be used for drilling operations between two narrow rails. Utility Model Content

[0003] The purpose of the utility model is to provide a short turnout rail drilling machine, which can improve the transmission ratio and output a larger torque by setting a two-stage planetary transmission mechanism, thereby achieving the advantages of smaller load power and low energy consumption in selecting a drive motor.

[0004] In order to solve the above technical problems, the utility model provides a short turnout rail drilling machine, comprising a fixture and a drilling machine installed on the fixture; the drilling machine comprises:

[0005] The driving mechanism comprises a driving motor, a secondary planetary transmission mechanism and an output power shaft; the motor and the secondary planetary transmission mechanism are respectively arranged in the upper and lower mounting cavities of the casing, and the output end of the driving motor is meshed and connected with the input end of the secondary planetary transmission mechanism, and the output end of the secondary planetary transmission mechanism is locked and connected with the upper end of the output power shaft;

[0006] The drill mechanism comprises a sliding sleeve, a flat shaft, a flat sleeve and a drill bit; the sliding sleeve is laterally slidably assembled in a casing, the flat shaft is rotatably mounted in the sliding sleeve via a bearing, one end of the flat shaft is slidingly connected to the flat sleeve via a key block, the flat sleeve is rotatably mounted in the casing via a bearing, and the end of the flat sleeve is meshingly transmission-connected to the lower end of the output power shaft, and the drill bit is detachably and lockably assembled on the other end of the flat shaft.

[0007] Preferably, the secondary planetary transmission mechanism includes: a mounting sleeve, an internal gear sleeve, a first sun gear, planetary gears, a planetary disc, and a second sun gear; the internal gear sleeve is fixedly installed inside the mounting sleeve, two of the planetary discs are coaxially stacked vertically inside the internal gear sleeve, and a plurality of the planetary gears are circumferentially and rotatably installed on the upper end surfaces of the two planetary discs. The outer sides of the planetary gears are meshed and connected to the internal gear sleeve, and the inner sides of the planetary gears on the upper and lower planetary discs are respectively meshed and connected to the first sun gear and the second sun gear. The first sun gear is installed at the output end of the drive motor, the second sun gear is installed at the bottom shaft end of the upper planetary disc, the bottom shaft end of the lower planetary disc is locked and connected to the upper end of the output power shaft, and the output power shaft is rotatably installed inside the mounting sleeve through a bearing.

[0008] Preferably, it further includes a small bevel gear and a large bevel gear; the small bevel gear is installed at the lower end of the output power shaft, the large bevel gear is installed at the shaft end of the flat sleeve, and the small bevel gear and the large bevel gear are meshed and connected to each other.

[0009] Preferably, it further includes a feeding mechanism, and the feeding mechanism includes a feeding gear, a feeding rack, and a feeding handle; the feeding gear is rotatably installed inside the machine housing through a bearing, the feeding handle is provided at the shaft end of the feeding gear, the bottom of the feeding gear is meshed with the feeding rack, and the bottom of the feeding rack is snap-connected to the snap hole of the sliding shaft sleeve through a snap block.

[0010] Preferably, the large bevel gear includes a shaft sleeve portion and a meshing tooth portion; the meshing tooth portion is integrally formed and sleeved on the shaft sleeve portion on the side close to the small bevel gear, and the shaft sleeve portion on the side far from the small bevel gear is rotatably installed inside the machine housing through a bearing.

[0011] Preferably, the machine housing further includes a laser lamp disposed obliquely downward, so that the beam of the laser lamp irradiates on the steel rail surface at the position to be drilled and marked.

[0012] Preferably, it further includes a battery pack, and the battery pack is installed on the rear side wall of the fixture.

[0013] Preferably, the fixture is composed of a fixed arm and a movable arm that can rotate and be locked and stopped.

[0014] Compared with the prior art, the present utility model has the following beneficial effects:

[0015] 1. When the secondary planetary transmission mechanism of the present utility model is specifically used, power is provided by the sun gear 1 at the output end of the driving motor, driving the planetary gears on the upper planetary disc to rotate while walking along the circumferential path of the internal gear sleeve, so as to drive the upper planetary disc to rotate. The rotation of the upper planetary disc drives the sun gear 2 to rotate, so as to drive the planetary gears on the lower planetary disc to rotate while walking along the circumferential path of the internal gear sleeve, realizing the rotation of the lower planetary disc, and driving the output power shaft to rotate; Therefore, through the above-mentioned internal gear sleeve, sun gear 1, planetary gear, planetary disc and sun gear 2 structures, secondary planetary transmission is realized, improving the transmission ratio and large torque output.

[0016] 2. By changing the layout position of the above-mentioned bearings and arranging them on the outer surface of the sleeve part of the large bevel gear and between the housing, the overall length of the machine can be shortened. Compared with the traditional overall length of 190 mm, it is significantly shortened by about 45 mm, and it can meet the use requirements for drilling operations between two narrow steel rails. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the front view of the short-type turnout rail drilling machine of the present utility model.

[0018] Figure 2 It is the rear view of the short-type turnout rail drilling machine of the present utility model.

[0019] Figure 3 It is the sectional view of the short-type turnout rail drilling machine of the present utility model.

[0020] Figure 4 It is the sectional view of the secondary planetary transmission mechanism of the present utility model.

[0021] Figure 5 It is the top view of the secondary planetary transmission mechanism of the present utility model.

[0022] In the figure: 1 - clamp, 11 - fixed arm, 12 - movable arm, 2 - drilling machine, 21 - housing, 3 - driving mechanism, 31 - driving motor, 32 - secondary planetary transmission mechanism, 321 - mounting sleeve, 322 - internal gear sleeve, 323 - sun gear 1, 324 - planetary gear, 325 - planetary disc, 326 - sun gear 2, 327 - small bevel gear, 328 - large bevel gear, 329 - sleeve part, 330 - meshing tooth part, 33 - output power shaft, 4 - drill bit mechanism, 41 - sliding bushing, 42 - flat shaft, 43 - flat sleeve, 44 - drill bit, 5 - feeding mechanism, 51 - feeding gear, 52 - feeding rack, 53 - feeding handle, 54 - clamping block, 6 - laser light, 7 - battery pack. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the utility model will become clearer. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the utility model.

[0024] like Figures 1 to 5 As shown, the embodiment of the utility model specifically provides a short turnout rail drilling machine, including a fixture 1 and a drilling machine 2 installed on the fixture 1; the drilling machine 2 includes:

[0025] like Figure 3 As shown, the drive mechanism 3 includes a drive motor 31, a secondary planetary transmission mechanism 32 and an output power shaft 33; the drive motor 31 and the secondary planetary transmission mechanism 32 are respectively arranged in the upper and lower mounting cavities of the housing 21, and the output end of the drive motor 31 is meshed and connected with the input end of the secondary planetary transmission mechanism 32, and the output end of the secondary planetary transmission mechanism 32 is locked and connected with the upper end of the output power shaft 33; the above-mentioned drive motor 31 provides rotational power, and the power is transmitted through the secondary planetary transmission mechanism 32 to increase the transmission ratio, and the power is output to the output power shaft 33;

[0026] like Figure 3 As shown, the drill mechanism 4 includes a sliding sleeve 41, a flat shaft 42, a flat sleeve 43 and a drill bit 44; the sliding sleeve 41 is laterally slidably assembled in the housing 21, and the flat shaft 42 is rotatably installed in the sliding sleeve 41 through a bearing, one end of the flat shaft 42 is slidably connected to the flat sleeve 43 through a key block, the flat sleeve 43 is rotatably installed in the housing 21 through a bearing, and the end of the flat sleeve 43 is meshingly connected to the lower end of the output power shaft 33, and the other end of the flat shaft 42 is detachably locked and assembled with a drill bit 44; the flat sleeve 43 is driven to rotate by the above-mentioned output power shaft 33, the flat sleeve 43 drives the flat shaft 42 to rotate, and the flat shaft 42 drives the drill bit 44 to rotate to perform a drilling action. Through the cooperation of the above-mentioned flattening shaft 42 and flattening sleeve 43, when the feeding mechanism 5 is used, the sliding sleeve 41 can be driven to move, and the flattening shaft 42 can be driven to move synchronously. Since one end of the flattening shaft 42 is slidably connected to the flattening sleeve 43 through a key block, it does not affect the power transmission of the flattening sleeve 43 to the flattening shaft 42, and will not interfere with the movement of the flattening shaft 42 in the flattening sleeve 43.

[0027] like Figure 4 and Figure 5As shown in the figure, the two-stage planetary transmission mechanism 32 includes: a mounting sleeve 321, an internal gear sleeve 322, a first sun gear 323, planetary gears 324, a planetary disk 325, and a second sun gear 326; the internal gear sleeve 322 is fixedly mounted inside the mounting sleeve 321, and two planetary disks 325 are coaxially stacked vertically inside the internal gear sleeve 322, and a plurality of planetary gears 324 are circumferentially rotatably mounted on the upper end surfaces of the two planetary disks 325. The outer sides of the planetary gears 324 are meshed and connected to the internal gear sleeve 322, and the inner sides of the planetary gears 324 on the upper and lower planetary disks 325 are respectively meshed and connected to the first sun gear 323 and the second sun gear 326. The first sun gear 323 is mounted on the output end of the drive motor 31, the second sun gear 326 is mounted on the bottom shaft end of the upper planetary disk 325, and the bottom shaft end of the lower planetary disk 325 is locked and connected to the upper end of the output power shaft 33, and the output power shaft 33 is rotatably mounted inside the mounting sleeve 321 through bearings; when the above two-stage planetary transmission mechanism 32 is specifically used, the first sun gear 323 at the output end of the drive motor 31 provides power to drive the planetary gears 324 on the upper planetary disk 325 to walk along the circumferential path of the internal gear sleeve 322 while rotating, so as to drive the upper planetary disk 325 to rotate. The rotation of the upper planetary disk 325 drives the second sun gear 326 to rotate, so as to drive the planetary gears 324 on the lower planetary disk 325 to walk along the circumferential path of the internal gear sleeve 322 while rotating, realizing the rotation of the lower planetary disk 325, so as to drive the output power shaft 33 to rotate; therefore, through the structures of the internal gear sleeve 322, the first sun gear 323, the planetary gears 324, the planetary disk 325, and the second sun gear 326 set above, two-stage planetary transmission is realized, and the transmission ratio and large torque output are improved.

[0028] As Figure 3 shown, it further includes a small bevel gear 327 and a large bevel gear 328; the small bevel gear 327 is mounted on the lower end of the output power shaft 33, the large bevel gear 328 is mounted on the shaft end of the flat position sleeve 43, and the small bevel gear 327 and the large bevel gear 328 are meshed and connected to each other. Through the meshing transmission between the small bevel gear 327 and the large bevel gear 328, the power transmission between the output power shaft 33 and the flat position sleeve 43 is realized.

[0029] As Figure 3As shown, it further includes a feeding mechanism 5, which includes a feeding gear 51, a feeding rack 52 and a feeding handle 53. The feeding gear 51 is rotatably installed in the housing 21 through a bearing. A feeding handle 53 is provided at the shaft end of the feeding gear 51. The bottom of the feeding gear 51 meshes with the feeding rack 52. The bottom of the feeding rack 52 is snap-connected to the snap hole of the sliding bushing 41 through a snap block 54. When the above-mentioned feeding mechanism 5 is used, the feeding handle 53 can be rotated to drive the feeding gear 51 to deflect, so as to drive the feeding rack 52 to move, and drive the sliding bushing 41 to move through the feeding rack 52, so as to realize the feeding action of the drill bit 44 installed on the sliding bushing 41 during drilling.

[0030] As Figure 3 shown, the large bevel gear 328 includes a bushing portion 329 and a meshing tooth portion 330. The meshing tooth portion 330 is integrally formed and sleeved on the bushing portion 329 on the side close to the small bevel gear 327. The bushing portion 329 on the side far from the small bevel gear 327 is rotatably installed in the housing 21 through a bearing. Since the end of the traditional drill bit 44 is usually installed through a bearing, the bearing is usually arranged between the outer surface of the end of the flat sleeve 43 and the housing 21. This bearing structure will increase the overall length of the drilling machine 2 (that is, the overall installation and fixing length along the direction of the drill bit 44), resulting in the inability to meet the requirements of narrow space scenarios. Therefore, by changing the position of the above-mentioned bearing layout and arranging it between the outer surface of the bushing portion 329 of the large bevel gear 328 and the housing 21, the overall length of the drilling machine can be shortened. Compared with the traditional overall length, it is significantly shortened by about 45 mm, and it can be applied to the use requirements of narrow space scenarios.

[0031] As Figure 3 shown, the housing 21 further includes a laser lamp 6 arranged obliquely downward, so that the beam of the laser lamp 6 irradiates on the rail surface of the drilling marking point, which can improve the drilling accuracy of the drilling point.

[0032] As Figure 1 and Figure 2 shown, it further includes a battery pack 7, which is installed on the rear side wall of the fixture 1 to provide power for the drilling machine 2. The fixture 1 is composed of a fixed arm 11 and a movable arm 12 that can rotate and be locked and stopped. The fixture 1 of the present utility model is the same as the technical solution disclosed in the turnout special-shaped rail drilling machine 2 with the publication number CN219130848U, so it will not be described in detail here.

[0033] The above description is only a description of the preferred embodiments of the present utility model, and does not limit the scope of the present utility model in any way. Any changes and modifications made by those of ordinary skill in the art of the present utility model according to the above disclosure are within the protection scope of the claims.

Claims

1. A short turnout rail drilling machine, comprising a fixture (1) and a drilling machine (2) mounted on the fixture (1); characterized in that: The drilling machine (2) comprises: The drive mechanism (3) comprises a drive motor (31), a secondary planetary transmission mechanism (32) and an output power shaft (33); the drive motor (31) and the secondary planetary transmission mechanism (32) are respectively arranged in the upper and lower mounting cavities of the housing (21), and the output end of the drive motor (31) is meshingly connected to the input end of the secondary planetary transmission mechanism (32), and the output end of the secondary planetary transmission mechanism (32) is locked and connected to the upper end of the output power shaft (33); The drill mechanism (4) comprises a sliding sleeve (41), a flat shaft (42), a flat sleeve (43) and a drill bit (44); the sliding sleeve (41) is laterally slidably assembled in a housing (21); the flat shaft (42) is rotatably mounted in the sliding sleeve (41) via a bearing; one end of the flat shaft (42) is slidably connected to the flat sleeve (43) via a key block; the flat sleeve (43) is rotatably mounted in the housing (21) via a bearing; the end of the flat sleeve (43) is meshingly connected to the lower end of the output power shaft (33); the other end of the flat shaft (42) is detachably and lockably assembled with the drill bit (44).

2. The short turnout rail drilling machine according to claim 1, characterized in that: The two-stage planetary transmission mechanism (32) comprises: a mounting sleeve (321), an inner gear sleeve (322), a sun gear one (323), planetary gears (324), a planetary disc (325) and a sun gear two (326); the inner gear sleeve (322) is fixedly mounted in the mounting sleeve (321), two planetary discs (325) are coaxially stacked up and down in the inner gear sleeve (322), and a plurality of planetary gears (324) are mounted on the upper end surfaces of the two planetary discs (325) so as to rotate circumferentially, and the outer sides of the planetary gears (324) are in contact with the inner gear sleeve (322). The planetary gears (324) on the upper and lower planetary disks (325) are meshed and connected, and the inner sides of the planetary gears (324) on the upper and lower planetary disks (325) are respectively meshed and connected with the sun gear 1 (323) and the sun gear 2 (326), the sun gear 1 (323) is installed on the output end of the drive motor (31), and the sun gear 2 (326) is installed on the bottom shaft end of the upper planetary disk (325), and the bottom shaft end of the lower planetary disk (325) is locked and connected with the upper end of the output power shaft (33), and the output power shaft (33) is rotatably installed in the installation sleeve (321) through a bearing.

3. The short turnout rail drilling machine according to claim 2, characterized in that: It also includes a small bevel gear (327) and a large bevel gear (328); the small bevel gear (327) is installed on the lower end of the output power shaft (33), and the large bevel gear (328) is installed on the shaft end of the flat sleeve (43), and the small bevel gear (327) and the large bevel gear (328) are meshed and connected.

4. The short turnout rail drilling machine according to claim 1, characterized in that: The invention also comprises a feeding mechanism (5), wherein the feeding mechanism (5) comprises a feeding gear (51), a feeding rack (52) and a feeding handle (53); the feeding gear (51) is rotatably mounted in the housing (21) via a bearing, the feeding handle (53) is arranged at the shaft end of the feeding gear (51), the feeding rack (52) is meshed at the bottom of the feeding gear (51), and the bottom of the feeding rack (52) is connected to the clamping hole of the sliding sleeve (41) via a clamping block (54).

5. The short turnout rail drilling machine according to claim 3, characterized in that: The large bevel gear (328) comprises a shaft sleeve portion (329) and a meshing tooth portion (330); the meshing tooth portion (330) is integrally formed on the shaft sleeve portion (329) on the side close to the small bevel gear (327), and the shaft sleeve portion (329) on the side away from the small bevel gear (327) is rotatably mounted in the housing (21) via a bearing.

6. The short turnout rail drilling machine according to any one of claims 1 to 5, characterized in that: The housing (21) also includes a laser lamp (6) arranged obliquely downward, so that the light beam of the laser lamp (6) is irradiated on the rail surface at the mark point to be drilled.

7. The short turnout rail drilling machine according to any one of claims 1 to 5, characterized in that: It also includes a battery pack (7), which is mounted on the rear side wall of the clamp (1).

8. The short turnout rail drilling machine according to any one of claims 1 to 5, characterized in that: The clamp (1) is composed of a fixed arm (11) and a movable arm (12) which can rotate and lock.

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