Drilling machine system

Abstract

Provided is a drilling machine system. In one example, a drill system includes a gearbox with a planetary reducer and a floating input coupler directly connected to or formed in a sun gear shaft in the planetary reducer. In addition, in the drilling machine system, the input coupler is not supported by a bearing, and the floating input shaft and the rotating shaft of the sun gear shaft are coaxially arranged.

Description

[0001] Cross-reference search of related applications

[0002] This application claims priority to U.S. Provisional Application No. 63 / 508,159, filed on June 14, 2023, entitled “SYSTEM WITH PLANETARY GEARBOX,” which is hereby incorporated by reference in its entirety. Technical Field

[0003] The present disclosure relates to a drilling machine system with a gearbox including a floating input coupler. Background Art

[0004] Planetary gearboxes have long been used in machinery such as drilling rigs because they can achieve target gear ratios while saving space. Specifically, rotary drilling rigs use planetary gearboxes to provide torque to the drilling tools in the machine. These machines are used to construct water wells, oil wells, and gas wells, among other things.

[0005] The inventors have recognized that there are several problems with planetary gearboxes used in previous drilling rigs. For example, due to the relatively high drive speeds of the gearboxes, some gearboxes may reach undesirable temperatures during operation. In some cases, the high operating temperature of the gearbox may increase component wear, such as wear of gears, seals, and bearings. Increased component wear can result in reduced component life, which may reduce the continuous operating time of the machinery incorporating the planetary gearbox, which may ultimately reduce customer satisfaction in some cases. Summary of the invention

[0006] The inventors have recognized the above problems with previous gearboxes and have developed a drilling machine system that at least partially overcomes these problems. In one example, the drilling machine system includes a gearbox with a planetary reducer and a floating input coupler, which is directly connected to or formed in the sun gear shaft in the planetary reducer. In the drilling machine system, the input coupler has no bearing support, and the rotating axes of the floating input shaft and the sun gear shaft are arranged coaxially. Compared with previous drilling machine gearboxes, the unsupported input coupler can reduce the operating temperature of the gearbox and the compactness of the system. Therefore, the attractiveness to customers is also increased.

[0007] In one example, the drilling machine system may further include a motor rotationally coupled to the input coupler. In this example, the motor may be disposed vertically above the planetary gearbox. Continuing with the example, the oil may be contained within the housing of the gearbox at a level vertically below the interface between the input coupler and the sun gear. This results in a lower oil temperature than in a system using bearings and an oil level above the bearings. As a result, the life of components in the system is further extended and system efficiency is improved due to reduced wind erosion losses compared to a gearbox with a higher oil level.

[0008] It should be understood that the above summary is intended to introduce in a simplified form the concepts that are further described in the detailed description. It is not intended to identify key or essential features of the claimed subject matter, the scope of which is solely determined by the claims that follow the detailed description. Furthermore, the claimed subject matter is not limited to implementations that solve any disadvantages noted above or in any part of this disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 Shown is a drilling machine with a drilling machine system including a gearbox and a motor.

[0010] Figure 2 A detailed view of an example of a drilling machine system with a gearbox and motor is shown.

[0011] Figure 3 Shows Figure 2 Cross-section diagram of the input configuration system described in .

[0012] Figure 4 A cross-section view of another example of a gearbox is shown.

[0013] Figure 5 Another example of an input configuration system with a planetary gearbox is shown. DETAILED DESCRIPTION

[0014] This article describes a drilling machine system that utilizes a gearbox with a planetary reduction device, including a sun gear shaft that is directly connected to or formed on a floating input coupler. The use of a floating input coupler and a sun gear can reduce the operating temperature of the gearbox, thereby extending the service life of the components and improving the compactness of the structure. Specifically, the life of the bearings, seals, and gears can be extended due to the reduction in the internal temperature of the gearbox, and the continuous working cycle of the system is also improved. In addition, the floating input coupler has no bearing support, which can reduce the oil level in the system. In more detail, the oil level can be lower than the mechanical interface between the sun gear shaft and the input coupler. The lower oil level can improve the efficiency of the system due to the reduction of wind dynamic losses.

[0015] Figure 1A drilling machine 100 is shown with a drilling machine system 102, which includes a gearbox 104 driven by a motor 106 (e.g., a hydraulic motor, an electric motor, or a pneumatic motor). In the illustrated example, the drilling machine 100 is a tracked vehicle with tracks 108 that can propel the drilling machine over the ground or otherwise position the drilling machine at a desired location. In the illustrated embodiment, an internal combustion engine and / or an electric motor can be used to provide mechanical power to the tracks, and in other embodiments, wheels can also be used to provide mechanical power to the tracks. In the example, the drilling machine also includes a boom 110 and a rotary drive drill 112. In the illustrated embodiment, a cabin 114 of the drilling machine is further depicted.

[0016] In the illustrated example, the drilling machine system 102 provides mechanical power for rotating a drilling tool 112. In addition, as described herein, the rotation axis of the drilling machine system 102 can be parallel to the gravity axis. In other words, the rotation axis of the drilling machine system is vertically aligned. In addition, when the rotary drilling tool is in use, its rotation axis can also be parallel to the gravity axis.

[0017] Figure 1 and Figure 2-5 An axis system is provided for reference in . In one example, the z-axis can be a vertical axis (e.g., parallel to the gravity axis), the x-axis can be a lateral axis (e.g., a horizontal axis), and / or the y-axis can be a longitudinal axis. However, in other examples, these axes may have other directions.

[0018] The controller 150 may constitute part of the control system 152. The controller 150 includes a processor 151 and a memory 153. As shown in the figure, the control system 152 receives information from the sensor 154 and sends a control signal to the actuator 156. For example, the sensor 154 may include a motor speed sensor, a gearbox speed sensor, etc. The actuator 156 may include an actuator of the motor 106, etc. The controller 150 may receive input data from the sensor, process the input data through the processor, and trigger the actuator according to instructions or codes corresponding to one or more routines. In some examples, the controller 150 may include instructions to send a command signal to the motor 106 to adjust the motor speed.

[0019] Figure 2 An example of a drilling machine system 200 is shown having a gearbox 202 (e.g., a planetary gearbox) driven by a motor 204. The drilling machine system 200 is Figure 1An example of a drilling machine system 102 is shown. Motor 204 can be a hydraulic motor (e.g., a variable displacement hydraulic motor). In this example, the hydraulic motor converts the power of a high-pressure working fluid (such as oil) into mechanical power. However, in other examples, motor 204 can be an electric motor or a pneumatic motor. When a hydraulic motor is used in the system, in some cases, the system can be more efficiently integrated into the machine because the machine uses other hydraulic systems.

[0020] The gearbox 202 includes a housing 206 with an input adapter 208 that at least partially surrounds a floating input coupler, which will be discussed in more detail herein. The gearbox 202 also includes a planetary reducer 300 (e.g., a simple planetary reducer), such as Figure 3 As shown, this article will be discussed in more detail. The planetary reducer in the gearbox may include a first stage and a second stage. However, in other examples, the gear assembly may include a single stage or three or more stages. The gearbox 202 may further include an intermediate flange 218 and an output bracket 220.

[0021] The input adapter 208 may include a flange 210 with an opening 212 for connecting means to removably connect the planetary gearbox 202 to the motor 204. The gearbox 202 may further include an output coupler 213, which may include a spline, a flange with an opening, a combination thereof, or the like. Figure 2 and Figure 3-5 The rotating shaft 250 of the planetary gearbox 202 is provided for reference.

[0022] The transmission housing 206 may include an oil breather and oil fill plug 214 and an oil level sight plug 216 connected thereto. The housing 206 may include a body 219 that may house the planetary gear reducer and may include an output bracket 220 having an opening 221 for a connection device. One portion 222 may be connected to the body 219 by a connection device 224 and another portion 226 may be connected to the housing portion 222 by a connection device 228. The housing portions 222 and 226 form the housing into a housing that may seal the output bearing as will be discussed in detail herein. However, other suitable housing configurations are also contemplated.

[0023] Figure 3 A cross-sectional view of the input side of a gearbox 202 with a planetary reducer 300 is shown. The cross-sectional view is cut through the rotation axis 250 of the gearbox.

[0024] In the illustrated example, the planetary gear reducer 300 includes a ring gear 302, planetary gears 304, a carrier 306, a bearing 308 (e.g., a needle bearing) connected to the planetary gears and the carrier, and a sun gear 310 with a sun gear shaft 312. Therefore, the sun gear 310 meshes with the planetary gears 304, and the planetary gears 304 mesh with the ring gear 302. Therefore, in this example, the planetary gear reducer 300 is a simple planetary gear reducer that only includes the above-mentioned gear assembly. In this way, if necessary, the gearbox can achieve the required gear ratio in a space-saving manner. However, in other examples, the planetary gear reducer can be a compound planetary gear reducer, etc. In this case, the complexity of the gear set will increase, thereby reducing the compactness of the gearbox. It will be understood that the gear meshing described herein is formed by meshing teeth.

[0025] In the illustration, the input end of the planetary reducer 300 is the sun gear 310, and the output end of the planetary reducer is the carrier 306. In addition, in the illustration, the ring gear 302 is grounded by the housing 206. Specifically, the ring gear 302 can be connected to the stepped portion 314 inside the housing 206 by a connecting device 316 (such as bolts, screws, etc.). However, the planetary gear reducer 300 can also have other configurations in terms of input, output and grounding components. For example, in other examples, one or more planetary stages can be integrated into the gearbox to increase the transmission ratio of the gearbox. For example, as discussed in more detail herein, the gearbox can include two planetary stages.

[0026] Figure 3 A floating input coupler 318 is further shown. In the illustrated example, the floating input coupler is integrally formed with the sun gear shaft 312 to form a continuous (e.g., unitary) structural component. However, as discussed in more detail herein, the floating input coupler can be directly rotationally coupled to the sun gear shaft via splines and / or other suitable mechanical couplings. If desired, forming the floating input coupler and the sun gear as an integral structure can reduce the height of the floating input coupler 318 along the Z-axis, thereby improving the compactness of the transmission. In addition, when the floating input coupler and the sun gear shaft are formed as an integral unit, the manufacturing process can be simplified and the structural integrity can be improved.

[0027] Additionally, prior to system assembly, when the floating input coupler 318 is uncoupled from the motor 204 (eg, Figure 2 ), the floating input coupler has no support at its end 320. Therefore, the bearing is not directly connected to the end 320 of the floating input coupler, thereby simplifying the design of the gearbox and allowing the gearbox to be more space efficient as desired.

[0028] The floating input coupler 318 may include an inner surface 322 that may define the boundaries of the recess 324. The floating input coupler 318 may also include an outer surface 326. The inner surface 322 and the outer surface 326 may have a constant diameter along their lengths, thereby forming an annular wall. However, other input coupling profiles are also contemplated. The output shaft (e.g., Figure 2 As shown in FIG. 1 , the input coupler and the output shaft of the motor can be connected by a spline (such as an interference fit, a spline, welding, or a combination thereof). In detail, in one example, the groove 324 can be a spline connection. In addition, a connecting device can also be used to rotationally connect the input coupler and the output shaft of the motor.

[0029] A gap 328 may be formed between the outer surface 326 of the floating input coupler 318 and the inner surface 330 of the extension 332 of the carrier 306. Thus, the input coupler, together with the sun gear, is not supported by a bearing. Therefore, the outer surface 326 has a smaller diameter than the inner surface 330. Installing a floating input coupler in a transmission can improve the space efficiency of the transmission while reducing friction by lowering the oil level in the transmission, thereby reducing heat in the transmission. As a result, the life of the transmission components is also extended.

[0030] In the illustrated example, the extension portion 332 includes a radial extension portion 334 and an axial extension portion 336. However, in other examples, the extension portion may have other suitable profiles. In addition, a gap 338 may be formed between the planetary gear 304 and the carrier extension portion 332. In the illustrated example, the carrier 306 includes another portion 340 that is rotatably coupled to (e.g., directly rotatably coupled to) the output coupler 213, such as Figure 2 The input adapter 208 has a flange 210 and includes an opening 212 in the housing 206, such as Figure 3 shown. Figure 3 200 with opening 221 in housing 206. It will be appreciated that the oil level in gearbox 202 may be lowered if desired. Specifically, the oil level in the gearbox may be lower than or equal to the vertical height of the rear wall 342 of recess 324. The reduction in the oil level in the gearbox may be achieved by Figure 5 Detailed description is given in .

[0031] Figure 4An example of a gearbox 400 (e.g., a planetary gearbox) is shown with a floating input coupler 402 that is integrally formed with a sun gear shaft 404 and is not supported by bearings to reduce the oil level in the gearbox, thereby reducing the operating temperature of the gearbox. In this way, the input coupler and the sun gear can form a unitary structure. In addition, if desired, an input coupler formed in this manner can shorten the length of the gearbox. Reducing the length of the gearbox can enhance the alignment and centering of the gears. Figure 2-3 At least some of the structure and / or features of the gearbox 202 may be included in Figure 4 In the illustrated gearbox 400 and other gearboxes described herein, the reverse is also true.

[0032] The gearbox 400 also includes a multi-stage reduction device 406, which may include a first stage 408 and a second stage 410. In one example, the multi-stage reduction can be a two-stage reduction. In detail, the first stage and the second stage can be achieved by using a simple planetary gear set, which allows the gearbox to achieve the desired gear ratio in a compact package. However, in other examples, the multi-stage reduction can include additional stages and / or different planetary gear set structures. The first stage 408 includes a sun gear 412, which is formed on the sun gear shaft 404 or otherwise connected thereto. The first stage also includes a planetary gear 414 rotating on a carrier 416. The planetary gear 414 is meshed with a ring gear 418. In the illustration, the ring gear 418 is grounded through the housing 432.

[0033] The second stage 410 includes a ring gear 420, planetary gears 422, a carrier 424, bearings 426 (e.g., needle bearings), and a sun gear 428, which is formed on or connected to a sun gear shaft 430. The sun gear shaft 430 can be rotatably connected to the carrier 416. The housing 432 can at least partially surround the first stage 408 and the second stage 410. In the illustrated example, the ring gear 420 is grounded through the housing 432. Therefore, the input and output of the first and second stage planetary gear sets are the sun gear and the carrier in the gear set, respectively.

[0034] The carrier 424 is rotationally coupled to (eg, directly rotationally coupled to) the output coupler 434. The bearing 436 can be coupled to the output coupler 434 and the housing 432. In addition, the bearing 438 can be connected to the output coupler 434 and the sun gear 428. The oil breather 440 can be further connected to the housing. It can be appreciated that during the manufacturing or installation process, the oil breather 440 can be connected to the housing 432. Figure 4 The gearbox housing shown and other gearboxes described herein provide oil and keep it in the housing. In other words, the oil in the gearbox can be circulated without a pump and a heat exchanger.

[0035] Figure 5 The oil level 500 of a gearbox 501 (e.g., a planetary gearbox) is shown reduced compared to the oil level 502 in a previous gearbox design with an input bearing for input coupler alignment. The input coupler 504 is shown again, along with a sun gear shaft 506 and a housing 508. In the example, the input coupler 504 is rotationally connected to the sun gear shaft 506 by splines and / or other means. As shown, the input coupler 504 does not include a bearing. Therefore, if necessary, the oil level in the gearbox can be reduced to extend the life of the gearbox and reduce the size and / or weight of the gearbox. In other words, by omitting the bearing and reducing the oil level, the heat energy in the gearbox can be reduced, thereby extending the life of the gears and other components in the gearbox. For example, in one use case, by reducing the oil level in the gearbox, the temperature of the gearbox can be reduced by about 10°C compared to a gearbox with a bearing on the input coupler and a higher bearing lubricant oil level. In addition, due to the reduction in the operating temperature of the gearbox, an external oil cooling system can be abandoned if necessary. In such an example, the oil in the machine can be sealed therein and not flow to external components. Therefore, the structure of the machine can be further simplified if necessary.

[0036] The gearbox described herein allows the oil level in the system to be reduced by removing bearings from the gearbox, if necessary, thereby reducing the operating temperature of the gearbox and increasing its space efficiency. As a result, the life of the gearbox components is extended, making the machine incorporating the gearbox more attractive to customers by allowing it to run longer if needed.

[0037] Figure 1-5 A method for operating a drilling machine system is provided. The method can be implemented by any system or combination of systems described herein. In addition, the method can also be implemented by instructions stored in a memory, which can be executed by a processor. The method includes transferring rotational energy from a motor to a floating input coupler in a gearbox. In one example, the method also includes transferring rotational energy from a planetary reducer to a rotationally driven drill tool.

[0038] The technical effect of the drilling machine operating method described in this article is to extend the service life of components and the gearbox by reducing the temperature of the gearbox.

[0039] Figure 1-5An example configuration of relative positioning of various components is shown. If the elements shown in the figure are in direct contact or directly coupled to each other, then at least in one example, these elements can be referred to as direct contact or direct coupling, respectively. Similarly, at least in one example, the elements shown as adjacent or adjacent to each other can be adjacent or adjacent to each other, respectively. For example, elements that are in face-to-face contact with each other can be referred to as face-to-face contact elements. Another example is that, at least in one example, the elements are placed separately from each other, with only space in the middle and no other elements, which can be referred to as being placed separately from each other. For example, relative to each other, the elements displayed above / below each other, relative to both sides of each other, or relative to the left / right side of each other can be referred to as such elements. In addition, as shown in the figure, in at least one example, the topmost element or element point can be referred to as the "top" of the element, and the bottommost element or element point can be referred to as the "bottom" of the element. The top / bottom, upper / lower, upper / lower used in this article can be relative to the vertical axis in the figure to describe the positioning of each element in the figure relative to each other. Therefore, in one example, the element displayed above other elements is vertically positioned above other elements. For another example, the shapes of elements depicted in the figures may be referred to as having these shapes (e.g., circular, linear, flat, curved, rounded, chamfered, beveled, or the like). In addition, at least in one example, elements shown intersecting each other may be referred to as intersecting elements or intersecting each other. In addition, in one example, elements that appear within another element or appear outside another element may also be referred to as such elements. In addition, elements that are offset and coaxial with each other may also be referred to as coaxial elements.

[0040] The present invention is further described below. In one aspect, the present invention provides a system comprising a gearbox, the gearbox comprising: a gear reducer; and an input coupler formed on a sun gear shaft, the sun gear shaft included in the multi-stage reducer; wherein the input coupler is not supported by a bearing. In one example, the system may further include a motor rotationally coupled to the input coupler. In one example, the motor may be a hydraulic motor. In one example, the system may be included in a drilling machine. Further, in one example, the motor may be a hydraulic motor, an electric motor, or a pneumatic motor.

[0041] In another aspect, a gearbox is provided, comprising: a gear reducer; and an input coupler formed on a sun gear shaft, the sun gear shaft being included in the gear reducer; wherein the input coupler is not supported by a bearing, and a gap is formed between the outer surface of the input coupler and a carrier portion in the gear reducer. In addition, in one example, the input coupler may form a continuous structure with the sun gear. Further, in one example, the gearbox may include an output coupler configured to be rotationally coupled with a drill bit. In one example, the multi-stage reduction may be a two-stage reduction. In one example, the two-stage reduction may include two simple planetary gear sets. In one example, the input coupler and the sun gear may form an integral structure. In addition, in one example, the gear reduction may be a single-stage reduction. Further, in one example, the gear reduction device may include three or more stages.

[0042] In another aspect, a drilling machine system is provided, the system comprising a gearbox, the gearbox comprising: a planetary gear reducer; and a floating input coupler, the coupler being directly coupled to or formed in the sun gear shaft in the planetary gear reducer; wherein the input coupler is not supported by a bearing; and the rotating axes of the floating input and sun gear shafts are arranged coaxially. In one example, the drilling machine system may further include a motor rotationally coupled to the input coupler. In another example, the motor may be a hydraulic motor, an electric motor, or a pneumatic motor. In another example, the motor may be a hydraulic motor, and the floating input coupler may be configured to be directly rotationally coupled to the hydraulic motor. In another example, the motor may be vertically mounted above the gearbox. In another example, the drilling machine system may further include oil contained in the gearbox housing, the liquid level of which is vertically lower than the interface between the input coupler and the sun gear. In another example, the rotating axes may be vertically aligned. In another example, the planetary reducer may be a simple planetary reducer. In another example, the carrier in the simple planetary reducer may be configured to be rotationally coupled to a rotary drive drill. In another example, the ring gear may be grounded by the gearbox housing. In another example, the carrier may be directly coupled to the output coupler.

[0043] In another aspect, a method for operating a drilling machine system is provided, the method comprising: transferring rotational energy from a motor to a floating input coupler in a gearbox; wherein the gearbox comprises: a planetary gear reducer; the floating input coupler is directly coupled to or formed in a sun gear shaft, the sun gear shaft being included in the planetary gear reducer; wherein the input coupler is not supported by a bearing; wherein the rotational axes of the floating input and sun gear shafts are arranged coaxially. In another example, the rotational axes may be arranged vertically. In another example, the oil level in the gearbox may be vertically below the interface between the input coupler and the sun gear. In another example, the method may further comprise transferring the rotational energy from the planetary reducer to a rotationally driven drill tool.

[0044] In another aspect, a drilling machine system is provided, the system comprising a gearbox, the gearbox comprising: a planetary reducer including a grounded ring gear, a carrier directly coupled to an output coupler, a plurality of planetary gears and a sun gear, the sun gear comprising a sun gear shaft; and a floating input coupler directly coupled to or formed in the sun gear shaft, the sun gear shaft being included in the planetary reducer; wherein the input coupler is not supported by a bearing; and a motor directly rotationally coupled to the floating input coupler. In one example, the motor may be a variable displacement hydraulic motor. In another example, the motor may be an electric motor or a pneumatic motor. In addition, in one example, a gap may be formed between an outer surface of the input coupler and a portion of the carrier in the planetary reducer. In another example, the drilling machine system may further include a rotary drive drill tool rotatably coupled to the carrier.

[0045] In another representation, a drill ring assembly is provided that includes a variable displacement hydraulic motor that is directly rotationally coupled to a gearbox that includes a simple planetary gear set that includes a floating sun gear that is directly rotationally coupled to a floating input shaft, wherein a carrier of the simple planetary gear set is rotationally coupled to a drill bit.

[0046] Although various embodiments are described above, it should be understood that these embodiments are examples only and not limitations. It is obvious to those familiar with the relevant technology that the disclosed subject matter can be embodied in other specific forms without departing from the spirit of the subject matter. Therefore, the embodiments described above should be considered in all respects to be illustrative and not restrictive. Therefore, the configurations and routines disclosed herein are exemplary in nature, and these specific examples should not be considered restrictive because there can be many variations. For example, the above-mentioned technology can be applied to systems with different types of power sources including different types of motors. The subject matter of the present disclosure includes all novel and non-obvious combinations and sub-combinations of various systems and configurations, as well as other features, functions and / or characteristics disclosed herein.

[0047] The following claims particularly point out certain combinations and subcombinations regarded as novel and non-obvious. The claims may refer to "an" element or a "first" element or the equivalent. The claims should be understood to include one or more such elements, neither requiring nor excluding two or more such elements. Other combinations and subcombinations of the disclosed features, functions, elements, and / or properties may be claimed by amendment of the present claims or by presentation of new claims in this or a related application. Such claims, whether broader, narrower, equal, or different in scope to the original claims, are also deemed to be included in the subject matter of the present disclosure.

Claims

1. A drilling machine system, characterized in that: The drilling machine system comprises: A gearbox, the gearbox comprising: Planetary reducer; and a floating input coupler, the floating input coupler being directly connected to or formed on the sun gear shaft in the planetary reducer; wherein the floating input coupler has no bearing support; and Wherein, the rotating shaft of the floating input coupler and the sun gear shaft are coaxially arranged.

2. The drilling machine system according to claim 1, characterized in that Also included is a motor rotationally coupled to the floating input coupler.

3. The drilling machine system according to claim 2, characterized in that: The motor is a hydraulic motor, an electric motor or a pneumatic motor.

4. The drilling machine system according to claim 2, characterized in that: The motor is a hydraulic motor and the floating input coupler is configured to be directly rotationally coupled to the hydraulic motor.

5. The drilling machine system according to claim 2, characterized in that: The motor is vertically arranged above the gearbox.

6. The drilling machine system according to claim 2, characterized in that: Also included is engine oil contained in the transmission case, wherein the liquid level of the engine oil is vertically lower than the interface between the floating input coupler and the sun gear.

7. The drilling machine system according to claim 6, characterized in that: The rotation axes are arranged vertically.

8. The drilling machine system according to claim 1, characterized in that: The planetary reducer is a simple planetary reducer.

9. The drilling machine system according to claim 8, characterized in that: The carrier in the simple planetary reducer is configured to be rotationally coupled to a rotary driven drilling tool.

10. The drilling machine system according to claim 8, characterized in that The ring gear is grounded by the gearbox housing.

11. The drilling machine system according to claim 9, characterized in that: The carrier is directly coupled to the output coupler.

12. The drilling system according to claim 9, characterized in that: A gap is formed between the outer surface of the floating input coupler and the carrier part in the planetary reducer.

13. The drilling machine system according to claim 9, characterized in that It also includes a rotary drive drill, which is rotatably connected to the carrier.

14. The drilling machine system according to claim 1, characterized in that Also included is a motor rotationally coupled to the floating input coupler, wherein the motor is a variable displacement hydraulic motor.

15. The drilling machine system of claim 1, wherein the oil level within the gearbox is vertically below an interface between the floating input coupler and the sun gear.

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