High-speed uniform-load hard tooth surface speed reducer for drilling machine

Abstract

The utility model discloses a high-speed uniform-load hard tooth surface speed reducer for a drilling machine, and relates to the technical field of speed reducers, the high-speed uniform-load hard tooth surface speed reducer comprises an upper shell, an input shaft, a lower shell and an output shaft, the two ends of the input shaft are respectively and fixedly provided with a first-stage bevel gear and a second-stage bevel gear, the first-stage bevel gear and the second-stage bevel gear are in mirror symmetry, and the first-stage bevel gear and the second-stage bevel gear are in mirror symmetry. A middle rotating shaft is rotationally installed in the lower shell through a bearing, and a first second-stage bevel gear, a first third-stage bevel gear, a second third-stage bevel gear and a second second-stage bevel gear are sequentially and fixedly installed on the outer ring face of the middle rotating shaft. Component forces in the length direction of the shafts are mutually offset, the shafts are prevented from deviating in the length direction, the two component forces perpendicular to the shafts enable the two ends of the shafts not to deflect, and therefore the situation that the gap change of the meshing gear sets is too large is avoided, uniform load distribution is guaranteed, and the stability of the speed reducer in the high-speed transmission process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of reducers, in particular to a high-speed, evenly loaded, hardened tooth surface reducer for a drilling rig. Background Art

[0002] A drilling rig is a mechanical device used for drilling operations underground or on the ground. Its main function is to drill rocks, soil or other strata to obtain samples, install underground facilities or conduct geological exploration. In actual use, a hard-toothed reducer is required to obtain power so that the drill bit or drilling tool can complete the drilling.

[0003] However, in the existing technology, the drill rig will encounter rocks of different hardness during the drilling process, resulting in different resistance to the drill bit. After the transmission is fed back to the hard-toothed reducer, the center position of the shaft and the gear will deviate to a certain extent, causing the gap between the gears to become larger or smaller, thereby causing uneven load during gear transmission. Summary of the Invention

[0004] The purpose of the utility model is to solve the problems existing in the prior art and to propose a high-speed, evenly loaded, hardened tooth surface reducer for a drilling rig.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a high-speed evenly loaded hardened tooth surface reducer for a drilling rig, comprising an upper shell, an input shaft, a lower shell and an output shaft, wherein both ends of the input shaft are fixedly installed with a first-stage helical gear 1 and a first-stage helical gear 2, respectively, and the first-stage helical gear 1 and the first-stage helical gear 2 are mirror-symmetrical, and a rotating shaft is rotatably installed inside the lower shell through a bearing, and the outer ring surface of the rotating shaft is fixedly installed with a second-stage helical gear 1, a third-stage helical gear 1, a third-stage helical gear 2 and a second-stage helical gear 2 in sequence, the second-stage helical gear 1 and the second-stage helical gear 2 are mirror-symmetrical, and the third-stage helical gear 1 and the third-stage helical gear 2 are mirror-symmetrical, and a bidirectional tooth gear is fixedly installed in the middle of the outer ring surface of the output shaft, and a first helical tooth area and a second helical tooth area are respectively provided at the outer two edges of the bidirectional tooth gear, and there is a gap between the first helical tooth area and the second helical tooth area, and the directions of the teeth in the first helical tooth area and the second helical tooth area are different.

[0006] Preferably, the first-stage helical gear 1 is meshed with the second-stage helical gear 1, and the first-stage helical gear 2 is meshed with the second-stage helical gear 2.

[0007] Preferably, the third-stage helical gear 1 is meshedly connected to the second helical tooth section, and the third-stage helical gear 2 is meshedly connected to the first helical tooth section.

[0008] Preferably, the bidirectional gear is located between the secondary helical gear 1 and the secondary helical gear 2.

[0009] Preferably, an auxiliary support mechanism is movably connected to the lower side of the middle portion of the central rotating shaft, and the auxiliary support mechanism includes an arc-shaped shell, a roller and a support column.

[0010] Preferably, the plurality of groups of rollers are distributed in an arc shape and are rotatably connected inside the arc shell, and the support column is fixedly connected to the middle portion of the lower side of the arc shell.

[0011] Preferably, a reinforcing rib is fixedly connected to the lower side of the support column, and the reinforcing rib is fixedly connected to the middle part of the bottom surface of the inner cavity of the lower shell.

[0012] Compared with the prior art, the advantages and positive effects of the present invention are:

[0013] 1. In the present invention, the gears on the internal input shaft, intermediate shaft and output shaft are mirror-symmetrical. During the transmission process, the components of force in the length direction of each shaft cancel each other out, preventing the shafts from shifting along the length direction. The two components of force perpendicular to each shaft prevent the two ends of each shaft from deflecting, thereby avoiding excessive changes in the gap between the meshing gear sets, ensuring uniform load distribution, and improving the stability of the reducer during high-speed transmission.

[0014] 2. In the present invention, multiple groups of rollers are supported in the middle of the rotating shaft, and multiple groups of rollers are distributed in an annular manner inside the arc-shaped shell. Under the support of the arc-shaped shell and the support columns, during the rotation of the rotating shaft, a group of supporting forces is added in the middle of the rotating shaft, thereby reducing the deviation of the rotating shaft during transmission and ensuring stable rotation of the rotating shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model provides a three-dimensional structural diagram of a high-speed load-balanced hardened gear reducer for a drilling rig;

[0016] Figure 2 The utility model provides a three-dimensional structural diagram of the interior of a high-speed load-sharing hardened gear reducer for a drilling rig;

[0017] Figure 3 This utility model provides a top view of the interior of a high-speed load-sharing hardened gear reducer for a drilling rig;

[0018] Figure 4 The utility model provides a three-dimensional structural diagram of the auxiliary support mechanism and the decomposed position of the central rotating shaft in a high-speed load-shafted hardened surface reducer for a drilling rig.

[0019] Legend: 1. Upper shell; 2. Input shaft; 21. First-stage helical gear 1; 22. First-stage helical gear 2; 3. Lower shell; 4. Output shaft; 5. Bidirectional gear; 51. First helical gear section; 52. Second helical gear section; 6. Transfer shaft; 61. Second-stage helical gear 1; 62. Third-stage helical gear 1; 63. Third-stage helical gear 2; 64. Second-stage helical gear 2; 7. Auxiliary support mechanism; 71. Arc shell; 72. Roller; 73. Support column; 8. Reinforcement rib. DETAILED DESCRIPTION

[0020] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0021] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0022] Example 1: Figures 1-4 As shown, the utility model provides a high-speed, evenly loaded, hardened tooth surface reducer for a drilling rig, comprising an upper shell 1, an input shaft 2, a lower shell 3, and an output shaft 4. A first-stage helical gear 21 and a first-stage helical gear 2 22 are fixedly mounted at both ends of the input shaft 2, respectively. The first-stage helical gear 21 and the first-stage helical gear 2 22 are mirror-symmetrical. A rotating shaft 6 is rotatably mounted inside the lower shell 3 via a bearing. A second-stage helical gear 61, a third-stage helical gear 62, a third-stage helical gear 2 63, and a second-stage helical gear 2 64 are fixedly mounted on the outer ring surface of the rotating shaft 6 in sequence. The second-stage helical gear 61 and the second-stage helical gear 2 64 are mirror-symmetrical, and the third-stage helical gear 1 62 and the third-stage helical gear 2 63 are mirror-symmetrical. A bidirectional gear 5 is fixedly installed on the middle of the outer ring surface of the output shaft 4. A first helical tooth area 51 and a second helical tooth area 52 are respectively provided at the two outer edges of the bidirectional gear 5. There is a gap between the first helical tooth area 51 and the second helical tooth area 52. The directions of the teeth in the first helical tooth area 51 and the second helical tooth area 52 are different. The first helical gear 21 and the second helical gear 61 are meshed and connected, the first helical gear 2 22 and the second helical gear 2 64 are meshed and connected, the third helical gear 1 62 and the second helical tooth area 52 are meshed and connected, the third helical gear 2 63 and the first helical tooth area 51 are meshed and connected, and the bidirectional gear 5 is located between the second helical gear 1 61 and the second helical gear 2 64.

[0023] The following is a detailed description of the specific settings and functions of this embodiment: power is obtained through the input shaft 2, and the first-stage bevel gear 1 21 and the first-stage bevel gear 2 22 are driven to rotate at the same time, the first-stage bevel gear 1 21 engages with the second-stage bevel gear 1 61 to rotate, the first-stage bevel gear 2 22 engages with the second-stage bevel gear 2 64 to rotate, and the second-stage bevel gear 1 61 and the second-stage bevel gear 2 64 are coaxially installed, so the second-stage bevel gear 1 61 and the second-stage bevel gear 2 64 act on the intermediate shaft 6 at the same time and drive the intermediate shaft 6 to rotate, so that the intermediate shaft 6 simultaneously drives the third-stage bevel gear 1 62 and the third-stage bevel gear 2 63 to rotate, the third-stage bevel gear 1 62 engages with the second bevel tooth area 52, the third-stage bevel gear 2 63 engages with the first bevel tooth area 51, and then drives the bidirectional gear 5 to rotate, and is transmitted through the output shaft 4. The power of speed reduction and torque increase is input into the drilling rig. When the transmission is subjected to changing resistance, the first-stage bevel gear 1 21 and the first-stage bevel gear 2 The helical gear 22 is distributed near both ends of the input shaft 2 in a mirror-symmetrical manner. The directions of the teeth in the two are different. When the input shaft 2 is subjected to force and position deviation occurs, the meshing force of the first-stage helical gear 1 21 and the second-stage helical gear 1 61 is vertically decomposed along the length direction of the input shaft 2, and the other meshing force of the first-stage helical gear 22 and the second-stage helical gear 2 64 is vertically decomposed along the length direction of the input shaft 2. The two meshing force components in the length direction of the input shaft 2 are equal in magnitude and opposite in direction, and act on the input shaft 2 at the same time, thereby preventing the input shaft 2 from deviating along the length direction. The two meshing force components in the vertical direction of the input shaft 2 act on both ends of the input shaft 2 respectively, with equal magnitude and the same direction, thereby preventing deflection of the two ends of the input shaft 2 and avoiding large changes in the gear clearance, thereby evenly distributing the load on the input shaft 2 and improving the stability of the input shaft 2 during rotation.

[0024] The meshing of the first helical tooth section 51 and the third-stage helical gear 2 63, and the meshing of the second helical tooth section 52 and the third-stage helical gear 1 62 have the same effect as the meshing of the first-stage helical gear 1 21 and the second-stage helical gear 1 61, and the first-stage helical gear 2 22 and the second-stage helical gear 2 64, thereby preventing deflection of both ends of the output shaft 4, making the load on the output shaft 4 evenly distributed, and improving the stability of the output shaft 4 during rotation;

[0025] The gears on the input shaft 2, the intermediate shaft 6 and the output shaft 4 inside the high-speed, evenly loaded, hardened reducer for the drilling rig are mirror-symmetrical. During the transmission process, the components of force in the length direction of each shaft cancel each other out, preventing the shafts from shifting along the length direction. The two components of force perpendicular to each shaft prevent deflection at both ends of each shaft, thereby avoiding excessive changes in the clearance between the meshing gear sets, ensuring uniform load distribution, and improving the stability of the reducer during high-speed transmission.

[0026] Example 2: Figures 1-4As shown, the lower middle side of the rotating shaft 6 is movably connected with an auxiliary support mechanism 7, and the auxiliary support mechanism 7 includes an arc-shaped shell 71, rollers 72 and support columns 73. Multiple groups of rollers 72 are distributed in an arc shape and rotatably connected to the inside of the arc-shaped shell 71. The support columns 73 are fixedly connected to the middle of the lower side of the arc-shaped shell 71. The lower side of the support columns 73 is fixedly connected with a reinforcing rib 8, and the reinforcing rib 8 is fixedly connected to the middle of the bottom surface of the inner cavity of the lower shell 3.

[0027] The effect achieved by the entire embodiment is that the middle part of the rotating shaft 6 is supported by multiple groups of rollers 72, and the multiple groups of rollers 72 are distributed in a ring inside the arc shell 71. Under the support of the arc shell 71 and the support column 73, during the rotation of the rotating shaft 6, a group of supporting force is added in the middle part of the rotating shaft 6, thereby reducing the deviation of the rotating shaft 6 during the transmission process and ensuring the stable rotation of the rotating shaft 6. At the same time, the reinforcing rib 8 is arranged in the middle part of the bottom surface of the inner cavity of the lower shell 3 to strengthen the structural strength of the lower shell 3.

[0028] The usage method and working principle of this device: When using the high-speed evenly loaded hardened gear reducer for the drilling rig, the input shaft 2 is connected to the power device, and the output shaft 4 is connected to the drilling rig. The input shaft 2 obtains power and simultaneously drives the first-stage helical gear 1 21 and the first-stage helical gear 2 22 to rotate. The first-stage helical gear 1 21 engages with the second-stage helical gear 1 61 to rotate, and the first-stage helical gear 2 22 engages with the second-stage helical gear 2 64 to rotate. The second-stage helical gear 1 61 and the second-stage helical gear 2 64 are coaxially installed, so the second-stage helical gear 1 61 and the second-stage helical gear 2 64 act on the intermediate shaft 6 at the same time and drive the intermediate shaft 6 to rotate, so that the intermediate shaft 6 simultaneously drives the third-stage helical gear 1 62 and the third-stage helical gear 2 63 to rotate, the third-stage helical gear 1 62 engages with the second helical tooth area 52, and the third-stage helical gear 2 63 engages with the first helical tooth area 51, thereby driving the bidirectional gear 5 to rotate, and the power is transmitted through the output shaft 4 to reduce the speed and increase the torque. In the input drilling rig, when the transmission is subjected to variable resistance, the first-stage bevel gear 1 21 and the first-stage bevel gear 2 22 are distributed near the two ends of the input shaft 2 in a mirror-symmetrical manner. The directions of the teeth of the two are different. When the input shaft 2 is subjected to force and position deviation occurs, the meshing force of the first-stage bevel gear 1 21 and the second-stage bevel gear 1 61 is vertically decomposed along the length direction of the input shaft 2, and the other meshing force of the first-stage bevel gear 2 22 and the second-stage bevel gear 2 64 is vertically decomposed along the length direction of the input shaft 2. The components of the two meshing forces in the length direction of the input shaft 2 are equal in magnitude and opposite in direction, and act on the input shaft 2 at the same time, thereby preventing the input shaft 2 from deviating along the length direction. The components of the two meshing forces in the vertical direction of the input shaft 2 act on the two ends of the input shaft 2 respectively, with equal magnitude and the same direction, thereby preventing the two ends of the input shaft 2 from deflecting, so that the load on the input shaft 2 is evenly distributed.

[0029] The meshing of the first helical tooth section 51 and the third-stage helical gear 2 63, and the meshing of the second helical tooth section 52 and the third-stage helical gear 1 62 have the same effect as the meshing of the first-stage helical gear 1 21 and the second-stage helical gear 1 61, and the first-stage helical gear 2 22 and the second-stage helical gear 2 64, so that the load on the output shaft 4 is evenly distributed, deflection of the two ends of the output shaft 4 is avoided, and the stability of the output shaft 4 during rotation is improved;

[0030] At the same time, multiple groups of rollers 72 are supported in the middle of the rotating shaft 6. During the rotation of the rotating shaft 6, a group of supporting force is added in the middle to reduce the deviation during the transmission process.

[0031] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A high-speed, uniformly loaded, hardened gear reducer for a drilling rig, comprising an upper housing (1), an input shaft (2), a lower housing (3), and an output shaft (4), characterized in that: The two ends of the input shaft (2) are respectively fixedly mounted with a first-stage bevel gear 1 (21) and a first-stage bevel gear 2 (22), and the first-stage bevel gear 1 (21) and the first-stage bevel gear 2 (22) are mirror-symmetrical. The interior of the lower shell (3) is rotatably mounted with a central rotating shaft (6) via a bearing, and the outer ring surface of the central rotating shaft (6) is fixedly mounted with a second-stage bevel gear 1 (61), a third-stage bevel gear 1 (62), a third-stage bevel gear 2 (63) and a second-stage bevel gear 2 (64) in sequence, and the second-stage bevel gear 1 (61) and the second-stage bevel gear 2 (64) are respectively fixedly mounted with a first-stage bevel gear 1 (21) and a third-stage bevel gear 2 (22). The helical gear 2 (64) is mirror-symmetrical, and the three-stage helical gear 1 (62) and the three-stage helical gear 2 (63) are mirror-symmetrical. A bidirectional gear (5) is fixedly mounted on the middle of the outer ring surface of the output shaft (4). A first helical tooth area (51) and a second helical tooth area (52) are respectively provided at two outer edges of the bidirectional gear (5). A gap exists between the first helical tooth area (51) and the second helical tooth area (52). The directions of the teeth in the first helical tooth area (51) and the second helical tooth area (52) are different.

2. The high-speed load-sharing hardened gear reducer for a drilling rig according to claim 1, characterized in that: The first-stage bevel gear 1 (21) and the second-stage bevel gear 1 (61) are meshed and connected, and the first-stage bevel gear 2 (22) and the second-stage bevel gear 2 (64) are meshed and connected.

3. The high-speed load-sharing hardened gear reducer for a drilling rig according to claim 2, characterized in that: The three-stage helical gear one (62) is meshedly connected to the second helical tooth section (52), and the three-stage helical gear two (63) is meshedly connected to the first helical tooth section (51).

4. The high-speed load-sharing hardened gear reducer for a drilling rig according to claim 3, characterized in that: The bidirectional gear (5) is located between the secondary helical gear 1 (61) and the secondary helical gear 2 (64).

5. The high-speed load-sharing hardened gear reducer for a drilling rig according to claim 4, characterized in that: An auxiliary support mechanism (7) is movably connected to the lower middle side of the central rotating shaft (6), and the auxiliary support mechanism (7) comprises an arc-shaped shell (71), a roller (72) and a support column (73).

6. The high-speed load-sharing hardened gear reducer for a drilling rig according to claim 5, characterized in that: A plurality of groups of rollers (72) are distributed in an arc shape and are rotatably connected to the interior of the arc shell (71), and the support column (73) is fixedly connected to the middle portion of the lower side of the arc shell (71).

7. The high-speed load-sharing hardened gear reducer for a drilling rig according to claim 6, characterized in that: A reinforcing rib (8) is fixedly connected to the lower side of the support column (73), and the reinforcing rib (8) is fixedly connected to the middle of the bottom surface of the inner cavity of the lower shell (3).

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