Transmission mechanism of drilling machine

Abstract

The utility model relates to the technical field of drilling machine transmission structures, in particular to a drilling machine transmission mechanism. Comprising a mounting sleeve, an inner gear sleeve, a sun gear I, a planetary gear, a planetary plate, a sun gear II and an output power shaft, the inner gear sleeve is fixedly mounted in the mounting sleeve, the two planetary plates are coaxially stacked up and down in the inner gear sleeve, the multiple planetary gears are circumferentially and rotationally mounted on the upper end faces of the two planetary plates, and the outer sides of the planetary gears are connected with the inner gear sleeve in a meshed mode; the inner sides of the planetary gears on the upper planetary plate and the lower planetary plate are connected with the first sun gear and the second sun gear in a meshed mode respectively, the first sun gear is installed at the output end of a driving motor, and the second sun gear is installed at the bottom shaft end of the planetary plate on the upper side. The two-stage planetary transmission can be realized, and the transmission ratio and the large-torque output are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling machine transmission structure, in particular to a drilling machine transmission mechanism. Background Art

[0002] A drilling machine is a tool for drilling holes in railway rails. It is a tool for railway engineering and electrical construction, maintenance and emergency repairs. It is suitable for drilling operations in existing line reconstruction and new railway construction. The rail drilling machines currently in use mainly include internal combustion rail drilling machines and external power supply AC electric drilling machines. Both methods are suitable for field operations. For example, a transmission mechanism for a rail drilling machine with publication number CN210523866U discloses that the transmission shaft transmits power to the transmission rod through the planetary gear assembly and the bevel gear assembly in sequence. However, the above-mentioned transmission mechanism is a one-stage transmission, resulting in a low transmission ratio, so that its output torque is small. Therefore, when the torque output by the transmission mechanism is small. In order to meet the same work requirements, it is necessary to select a motor with a larger load power, resulting in high energy consumption. Utility Model Content

[0003] The utility model aims to provide a drilling machine transmission mechanism, which can improve its transmission ratio and output a larger torque, and achieve the advantages of smaller load power and low energy consumption for the selection of a driving motor.

[0004] In order to solve the above technical problems, the utility model provides a drilling machine transmission mechanism, including: an installation sleeve, an internal gear sleeve, a sun gear 1, a planetary gear, a planetary disk, a sun gear 2 and an output power shaft; the internal gear sleeve is tightly installed in the installation sleeve, two planetary disks are coaxially stacked up and down in the internal gear sleeve, and the upper end surfaces of the two planetary disks are both circumferentially rotatably installed with a plurality of planetary gears, the outer sides of the planetary gears are meshed and connected with the internal gear sleeve, and the inner sides of the planetary gears on the upper and lower planetary disks are respectively meshed and connected with the sun gear 1 and the sun gear 2, the sun gear 1 is installed at the output end of the driving motor, the sun gear 2 is installed at the bottom shaft end of the upper planetary disk, the bottom shaft end of the lower planetary disk is locked and connected to the upper end of the output power shaft, and the output power shaft is rotatably installed in the installation sleeve through a bearing.

[0005] Preferably, it also includes a drill bit transmission shaft, which includes a flat sleeve and a flat shaft; the flat sleeve is rotatably installed in the casing through a bearing, the flat shaft is installed in the flat sleeve through a key block, one end of the flat shaft is equipped with a drill bit, and the flat sleeve is meshingly connected to the lower end of the output power shaft.

[0006] Preferably, it also includes a small bevel gear and a large bevel gear; the small bevel gear is installed on the lower end of the output power shaft, and the large bevel gear is installed on the shaft end of the flat sleeve, and the small bevel gear and the large bevel gear are meshed and connected.

[0007] Preferably, the driving motor and the mounting sleeve are both installed in upper and lower separation chambers of the casing.

[0008] Preferably, it also includes a locking end cover and a sleeve, the sleeve being axially sleeved in the locking end cover, the sleeve being sleeved on the output power shaft, and the upper end of the sleeve being abutted and connected to the bottom of the shoulder of the output power shaft, the locking end cover being locked and connected to the casing by a locking bolt, and the mounting sleeve being limited and stopped by the locking end cover.

[0009] Preferably, it also includes a limit block and a limit groove, wherein the limit block is circumferentially arranged on the outer wall of the inner gear sleeve, the limit groove is circumferentially opened on the top end surface of the mounting sleeve, and the limit block is correspondingly clamped in the limit groove.

[0010] Preferably, the number of the planetary gears circumferentially arranged on each planetary disk is four.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. The utility model provides power through the sun gear 1 at the output end of the above-mentioned driving motor to drive the planetary gears on the upper planetary disk to move along the circumferential path of the inner gear sleeve while rotating, so as to drive the upper planetary disk to rotate. The rotation of the upper planetary disk drives the sun gear 2 to rotate, so as to drive the planetary gears on the lower planetary disk to move along the circumferential path of the inner gear sleeve while rotating, so as to realize the rotation of the lower planetary disk, so as to drive the output power shaft to rotate. Therefore, through the above-mentioned internal gear sleeve, sun gear 1, planetary gears, planetary disk and sun gear 2 structure, a two-stage planetary transmission is realized, and the transmission ratio and large torque output are improved.

[0013] 2. The utility model can improve the stability of the output power shaft when it is installed with the bearing by using the locking end cover and the shaft sleeve, thereby avoiding the axial movement thereof. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a cross-sectional view of a drilling machine transmission mechanism of the utility model Figure 1 .

[0015] Figure 2 This is a cross-sectional view of a drilling machine transmission mechanism of the utility model Figure 2 .

[0016] Figure 3This is a front view of the installation sleeve and the internal gear sleeve of the utility model.

[0017] Figure 4 This is a cross-sectional view of the installation sleeve and the inner gear sleeve of the utility model.

[0018] Figure 5 This is an exploded view of the internal gear sleeve, planetary gear and planetary disk of the utility model.

[0019] In the figure: 1-installation sleeve, 11-limiting groove, 2-inner gear sleeve, 21-limiting block, 3-sun gear one, 4-planetary gear, 5-planetary disk, 6-sun gear two, 7-output power shaft, 71-small bevel gear, 72-large bevel gear, 73-locking end cover, 74-shaft sleeve, 75-drive motor, 8-drill bit transmission shaft, 81-flat sleeve, 82-flat shaft, 9-casing, 10-drill bit. DETAILED DESCRIPTION

[0020] 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.

[0021] like Figures 1 to 5 As shown, the embodiment of the utility model specifically provides a drilling machine transmission mechanism, including: an installation sleeve 1, an internal gear sleeve 2, a sun gear 3, planetary gears 4, a planetary disk 5, a sun gear 2 6 and an output power shaft 7; the installation sleeve 1 is fastened with the internal gear sleeve 2, two planetary disks 5 are coaxially stacked up and down in the internal gear sleeve 2, and the upper end surfaces of the two planetary disks 5 are circumferentially rotatably installed with a plurality of planetary gears 4, the outer sides of the planetary gears 4 are meshed and connected with the internal gear sleeve 2, and the inner sides of the planetary gears 4 on the upper and lower planetary disks 5 are respectively meshed and connected with the sun gear 1 3 and the sun gear 2 6, the sun gear 1 3 is installed at the output end of the driving motor 75, the sun gear 2 6 is installed at the bottom shaft end of the upper planetary disk 5, the bottom shaft end of the lower planetary disk 5 is locked and connected with the upper end of the output power shaft 7, and the output power shaft 7 is rotatably installed in the installation sleeve 1 through a bearing. The sun gear 1 3 at the output end of the drive motor 75 provides power to drive the planetary gears 4 on the upper planetary disk 5 to move along the circumferential path of the inner gear sleeve 2 while rotating, so as to drive the upper planetary disk 5 to rotate. The rotation of the upper planetary disk 5 drives the sun gear 2 6 to rotate, so as to drive the planetary gears 4 on the lower planetary disk 5 to move along the circumferential path of the inner gear sleeve 2 while rotating, so as to rotate the lower planetary disk 5 and drive the output power shaft 7 to rotate. Therefore, through the above-mentioned structure of the inner gear sleeve 2, sun gear 1 3, planetary gears 4, planetary disk 5 and sun gear 2 6, a two-stage planetary transmission is realized, which improves the transmission ratio and large torque output.

[0022] like Figure 1 As shown, the drill bit transmission shaft 8 is also included, and the drill bit transmission shaft 8 includes a flat position sleeve 81 and a flat position shaft 82; the flat position sleeve 81 is rotatably installed in the housing 9 through a bearing, and the flat position shaft 82 is installed in the flat position sleeve 81 through a key block, and one end of the flat position shaft 82 is equipped with a drill bit 10, and the flat position sleeve 81 is meshed and connected with the lower end of the output power shaft 7. Through the cooperation of the flat position sleeve 81 and the flat position shaft 82, the output power of the output power shaft 7 can be transmitted to the drill bit transmission shaft 8, so as to realize the drilling work of the drill bit 10.

[0023] like Figure 1 and Figure 2 As shown, the small bevel gear 71 and the large bevel gear 72 are also included; the small bevel gear 71 is installed at the lower end of the output power shaft 7, and the large bevel gear 72 is installed at the shaft end of the flat sleeve 81, and the small bevel gear 71 and the large bevel gear 72 are meshed and connected. The power transmission between the output power shaft 7 and the flat sleeve 81 is realized through the mutual meshing transmission of the small bevel gear 71 and the large bevel gear 72.

[0024] The driving motor 75 and the mounting sleeve 1 are both mounted in the upper and lower separation chambers of the housing 9 .

[0025] It also includes a locking end cover 73 and a sleeve 74. The locking end cover 73 is axially sleeved with the sleeve 74. The sleeve 74 is sleeved on the output power shaft 7, and the upper end of the sleeve 74 is abutted and connected with the bottom of the shoulder of the output power shaft 7. The locking end cover 73 is locked and connected with the housing 9 through a locking bolt, and the mounting sleeve 1 is limited and stopped by the locking end cover 73. By using the above-mentioned locking end cover 73 and sleeve 74, the stability of the output power shaft 7 when it is installed with the bearing can be improved to avoid the axial movement of the output power shaft 7.

[0026] like Figure 3 As shown, it also includes a limit block 21 and a limit groove 11. The limit block 21 is circumferentially arranged on the outer wall of the inner gear sleeve 2, and the limit groove 11 is circumferentially opened on the top end face of the mounting sleeve 1, and the limit block 21 is correspondingly clamped in the limit groove 11, so that the inner gear sleeve 2 can be quickly limited and stopped and installed in the mounting sleeve 1 to prevent the inner gear sleeve 2 from rotating.

[0027] like Figure 3 and Figure 5 As shown, there are four planetary gears 4 arranged circumferentially on each planetary disc 5 . The engagement between the four planetary gears 4 and the inner gear sleeve 2 can improve the stability of the planetary disc 5 moving along the circumferential path of the inner gear sleeve 2 .

[0028] The above description is only a description of the preferred embodiment of the utility model, and is not any limitation on the scope of the utility model. Any changes and modifications made by ordinary technicians in the field of the utility model based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A drilling machine transmission mechanism, characterized in that: include: An installation sleeve (1), an inner gear sleeve (2), a sun gear one (3), planetary gears (4), a planetary disc (5), a sun gear two (6) and an output power shaft (7); the inner gear sleeve (2) is fixedly installed in the installation sleeve (1), two planetary discs (5) are coaxially stacked up and down in the inner gear sleeve (2), and a plurality of planetary gears (4) are installed on the upper end surfaces of the two planetary discs (5) in a circumferentially rotatable manner, and the outer sides of the planetary gears (4) are meshed and connected with the inner gear sleeve (2), and the upper and lower The inner sides of the planetary gears (4) on the two planetary discs (5) are respectively meshed and connected with the sun gear one (3) and the sun gear two (6); the sun gear one (3) is mounted on the output end of the drive motor (75); the sun gear two (6) is mounted on the bottom shaft end of the upper planetary disc (5); the bottom shaft end of the lower planetary disc (5) is locked and connected with the upper end of the output power shaft (7); and the output power shaft (7) is rotatably mounted in the mounting sleeve (1) through a bearing.

2. A drilling machine transmission mechanism as claimed in claim 1, characterized in that: The machine also comprises a drill bit transmission shaft (8), wherein the drill bit transmission shaft (8) comprises a flat sleeve (81) and a flat shaft (82); the flat sleeve (81) is rotatably mounted in the housing (9) via a bearing, the flat shaft (82) is mounted in the flat sleeve (81) via a key block, a drill bit (10) is mounted on one end of the flat shaft (82), and the flat sleeve (81) is meshingly connected to the lower end of the output power shaft (7).

3. A drilling machine transmission mechanism as claimed in claim 2, characterized in that: It also includes a small bevel gear (71) and a large bevel gear (72); the small bevel gear (71) is mounted on the lower end of the output power shaft (7), and the large bevel gear (72) is mounted on the shaft end of the flat sleeve (81), and the small bevel gear (71) and the large bevel gear (72) are meshed and connected.

4. A drilling machine transmission mechanism as claimed in claim 1, characterized in that: The driving motor (75) and the mounting sleeve (1) are both mounted in the upper and lower separation chambers of the casing (9).

5. A drilling machine transmission mechanism as claimed in claim 4, characterized in that: The machine body also comprises a locking end cover (73) and a shaft sleeve (74), wherein the shaft sleeve (74) is axially sleeved in the locking end cover (73), the shaft sleeve (74) is sleeved on the output power shaft (7), and the upper end of the shaft sleeve (74) is abutted and connected with the bottom of the shaft shoulder of the output power shaft (7), the locking end cover (73) is locked and connected with the housing (9) by a locking bolt, and the mounting sleeve (1) is limited and stopped by the locking end cover (73).

6. A drilling machine transmission mechanism as claimed in claim 1, characterized in that: It also includes a limit block (21) and a limit groove (11), wherein the limit block (21) is circumferentially arranged on the outer wall of the inner gear sleeve (2), the limit groove (11) is circumferentially opened on the top end surface of the mounting sleeve (1), and the limit block (21) is correspondingly clamped in the limit groove (11).

7. A drilling machine transmission mechanism according to any one of claims 1 to 6, characterized in that: The number of the planetary gears (4) circumferentially arranged on each planetary disk (5) is four.

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