A horizontal directional drilling rig with reluctance motor driven gearboxes

Abstract

The utility model belongs to horizontal directional drilling machine technical field. Purpose at providing a kind of horizontal directional drilling machine of reluctance motor drive gear box, with reluctance motor instead of hydraulic motor, small loss, reversing no impact, simple structure, maintenance cost is low. Adopt following technical scheme, including drilling machine platform, hydraulic pump station, slide bar, feed assembly, propelling oil cylinder and travelling mechanism, the top surface of drilling machine platform is provided with hydraulic pump station and two slide bars, two slide bars are parallelly arranged and are installed along drill rod feeding direction, feed assembly is slidably arranged on two slide bars, propelling oil cylinder is arranged below slide bar and is connected with the bottom of feed assembly, and travelling mechanism is installed on the bottom of drilling machine platform;In feed assembly, base is slidably sleeved on two slide bars, gear box is fixed on base, reluctance motor is fixed on the box of gear box by bolt, and the output shaft of reluctance motor is connected with the input shaft of gear box by coupling. The utility model is used for directional drilling.

Description

Technical Field

[0001] This utility model relates to a horizontal directional drilling rig with a reluctance motor driven gearbox, belonging to the technical field of horizontal directional drilling rigs. Background Technology

[0002] Horizontal directional drilling rigs are devices that drill holes underground without excavating the ground surface. They are characterized by fast construction speed and low cost.

[0003] Currently, horizontal directional drilling rigs generally use hydraulic motors to drive gearboxes that connect to the drill rods. However, hydraulic systems suffer from losses during energy conversion, such as hydraulic oil leakage and increased oil temperature leading to decreased volumetric efficiency. Hydraulic systems are also prone to pressure shocks during reversal. In addition, the transmission hydraulic motor + gearbox system requires relatively thick hydraulic pipelines to accommodate control circuits and other components, and the pressure is gradually lost as the pipeline lengthens. This places high demands on the hydraulic system's capacity, results in high structural complexity, and requires regular maintenance and hydraulic oil replacement. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a horizontal directional drilling rig with a reluctance motor driven gearbox, which uses a reluctance motor instead of a hydraulic motor, resulting in low losses, no impact during commutation, simple structure, and low maintenance costs.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a horizontal directional drilling rig driven by a reluctance motor and gearbox, comprising a drilling platform, a hydraulic pump station, slide rods, a feed assembly, a propulsion cylinder, and a traveling mechanism. The top surface of the drilling platform is provided with a hydraulic pump station and two slide rods, which are arranged in parallel and installed along the feed direction of the drill rod. The feed assembly is slidably mounted on the two slide rods. The propulsion cylinder is located below the slide rods and connected to the bottom of the feed assembly. The bottom of the drilling platform is equipped with a traveling mechanism. The feed assembly includes a base, a gearbox, and a reluctance motor. The base is slidably mounted on two slide rods, the gearbox is fixed on the base, and the reluctance motor is fixed to the gearbox housing by bolts. The output shaft of the reluctance motor is connected to the input shaft of the gearbox via a coupling.

[0006] Preferably, a drill pipe holder is mounted on the output shaft of the gearbox.

[0007] Preferably, the gearbox is also equipped with a brake, which is connected to the input shaft of the gearbox.

[0008] Preferably, the walking mechanism is a track.

[0009] Preferably, the present invention also includes four hydraulic support legs that can support the ground, which are fixed at the four corners of the drilling platform.

[0010] Compared with the prior art, the present invention uses a reluctance motor to directly drive the gearbox, which has the following advantages.

[0011] 1. Energy conversion efficiency can reach over 90%, which is 20%-40% higher than that of hydraulic motor systems.

[0012] 2. It has a wide speed range and fast torque response, and achieves smooth speed regulation through electronic commutation, which can avoid mechanical shock.

[0013] 3. It reduces components such as hydraulic lines, saves space, reduces structural complexity, improves stability, extends service life, and lowers maintenance costs.

[0014] 4. The reluctance motor can operate in a wide temperature range of -40℃ to +120℃, with no risk of oil leakage, and can adapt to harsh environments such as mines and deep seas; it has no electrical sparks and no high-temperature surfaces, and can meet the requirements of explosion-proof places such as coal mines, petroleum, and chemical plants.

[0015] 5. Low annual energy consumption cost, excellent long-term economic efficiency, and oil-free design reduces carbon emissions and protects the environment. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the feeding component in this utility model.

[0019] Figure 3 This is a side view of the feed assembly in this utility model.

[0020] Figure 4 for Figure 3 AA cross-section view.

[0021] Figure 5 This is a top view of the feed assembly in this utility model.

[0022] In the diagram: 1 is the drilling platform, 2 is the hydraulic pump station, 3 is the slide bar, 4 is the feed assembly, 41 is the base, 42 is the gearbox, 43 is the reluctance motor, 44 is the drill pipe holder, 45 is the brake, 5 is the propulsion cylinder, 6 is the traveling mechanism, and 7 is the hydraulic support leg. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described in conjunction with the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0024] It should be noted that the structures, proportions, sizes, etc. shown in the accompanying drawings of this specification are only used to complement the content disclosed in the specification for those skilled in the art to understand and read, and are not intended to limit the conditions under which this utility model can be implemented. Therefore, they have no substantial technical significance. Any modification to the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed in this utility model, provided that it does not affect the effects and purposes that this utility model can produce. It should be noted that in this specification, relational terms such as "first" and "second" are only used to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0025] The present invention provides the following embodiments.

[0026] like Figure 1 As shown, this utility model discloses a horizontal directional drilling rig with a reluctance motor driven gearbox, including a drilling platform 1, a hydraulic pump station 2, slide rods 3, a feed assembly 4, a propulsion cylinder 5, and a traveling mechanism 6. The top surface of the drilling platform 1 is provided with a hydraulic pump station 2 and two slide rods 3. The two slide rods 3 are arranged in parallel and installed along the feed direction of the drill rod. The feed assembly 4 is slidably mounted on the two slide rods 3. The propulsion cylinder 5 is located below the slide rods 3 and connected to the bottom of the feed assembly 4. The bottom of the drilling platform 1 is equipped with a traveling mechanism 6. like Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the feed assembly 4 includes a base 41, a gearbox 42, and a reluctance motor 43. The base 41 is slidably mounted on two slide rods 3. The gearbox 42 is fixed on the base 41. The reluctance motor 43 is fixed to the housing of the gearbox 42 by bolts, and the output shaft of the reluctance motor 43 is connected to the input shaft of the gearbox 42 by a coupling.

[0027] A drill pipe holder 44 is mounted on the output shaft of the gearbox 42.

[0028] A brake 45 is also installed on the gearbox 42, and the brake 45 is connected to the input shaft of the gearbox 42. When the brake is engaged, the gears inside the gearbox 42 can rotate, increasing the safety of the system.

[0029] The walking mechanism 6 is a tracked system, which is more suitable for complex terrain.

[0030] This utility model also includes four hydraulic support legs 7 that can support the ground, which are fixed at the four corners of the drilling platform 1. They are used to adjust the front and rear angle of the drilling rig, facilitating the control of the drilling rod's opening angle.

[0031] In this invention, the reluctance motor directly drives the gearbox, which has significant advantages over the hydraulic motor system.

[0032] I. Energy conversion efficiency is significantly improved.

[0033] 1. Reduce energy consumption.

[0034] Hydraulic systems require multi-stage energy conversion through an electric motor → hydraulic pump → hydraulic motor → gearbox. During this process, there are losses such as hydraulic oil leakage (approximately 15%-30% efficiency loss) and oil temperature rise (decreased volumetric efficiency).

[0035] The reluctance motor directly drives the gearbox, and the energy conversion efficiency can reach more than 90%, which is 20%-40% higher than that of the hydraulic system.

[0036] 2. No hydraulic oil circulation loss.

[0037] Hydraulic systems rely on a continuous oil pump to maintain pressure, and energy consumption accounts for 20%-40% of the total system power. Reluctance motors, on the other hand, only start when needed, and their static power consumption is close to zero.

[0038] II. Optimization of dynamic performance and control accuracy.

[0039] 1. Wide speed range and fast response.

[0040] The reluctance motor supports continuous speed regulation from 0 to 10,000 rpm and can achieve microsecond-level torque response through PWM control, while the response time of hydraulic systems is usually tens of milliseconds.

[0041] 2. No risk of hydraulic shock or leakage.

[0042] Hydraulic systems are prone to pressure shocks during reversal. For example, the reversal shock of a piston motor can reach 30% of the system pressure. In contrast, a reluctance motor achieves smooth speed regulation through electronic reversal, thus avoiding mechanical shocks.

[0043] Third, the structure is simplified and maintenance costs are reduced.

[0044] 1. The complexity of the mechanical structure is reduced.

[0045] Traditional hydraulic motor + gearbox systems require relatively large hydraulic pipelines and components such as the hydraulic motor control circuit. Furthermore, the pressure gradually decreases as the pipeline extends, placing a high requirement on the hydraulic system's capacity margin.

[0046] The integrated solution of reluctance motor + gearbox can reduce the original hydraulic pipelines and other components, reduce the space required for pipeline layout, reduce the complexity of the hydraulic system, and improve the stability of the system.

[0047] 2. Maintenance-free and long lifespan.

[0048] Hydraulic systems consume approximately 400L of hydraulic oil per unit per year, and the annual failure rate of seals is 15%-20%, requiring regular replacement of hydraulic oil and seals. In contrast, reluctance motors have no easily damaged parts, and their bearing life can reach over 10,000 hours. The annual maintenance cost of a reluctance motor system is only 1 / 3 that of a hydraulic system.

[0049] IV. Enhanced environmental adaptability and safety.

[0050] 1. Good tolerance to extreme working conditions.

[0051] Reluctance motors can operate in a wide temperature range of -40℃ to +120℃, while hydraulic systems will experience a decrease in system efficiency of more than 50% due to the increased viscosity of hydraulic oil at low temperatures. Moreover, there is no risk of oil leakage, making them suitable for harsh environments such as mines and deep-sea equipment.

[0052] 2. Intrinsic safety and explosion-proof characteristics.

[0053] It produces no electrical sparks and has no high-temperature surface, while the surface temperature of a hydraulic motor can reach over 80°C, making it suitable for explosion-proof environments such as coal mines, petroleum, and chemical plants.

[0054] Fifth, it is economically viable and has strong sustainable development potential.

[0055] 1. Significant advantages in total life cycle cost.

[0056] Taking a 100kW system as an example, the initial investment of a reluctance motor + gearbox is 20% higher than that of a hydraulic system, but the annual energy consumption cost is reduced by 35%, and the overall cost can be broken down within 5 years, making it more economical in the long run.

[0057] 2. It aligns with the trend of green manufacturing.

[0058] Hydraulic oil has a high annual consumption and contains mineral oil pollution. The oil-free design of the reluctance motor system can reduce carbon emissions by more than 90%, which is more beneficial to environmental protection.

[0059] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A horizontal directional drilling rig with a reluctance motor-driven gearbox, characterized in that: The system includes a drilling platform (1), a hydraulic pump station (2), slide rods (3), a feed assembly (4), a propulsion cylinder (5), and a traveling mechanism (6). The top surface of the drilling platform (1) is provided with a hydraulic pump station (2) and two slide rods (3). The two slide rods (3) are arranged in parallel and installed along the feed direction of the drill rod. The feed assembly (4) is slidably arranged on the two slide rods (3). The propulsion cylinder (5) is arranged below the slide rods (3) and connected to the bottom of the feed assembly (4). The bottom of the drilling platform (1) is provided with a traveling mechanism (6). The feed assembly (4) includes a base (41), a gearbox (42) and a reluctance motor (43). The base (41) is slidably mounted on two slide rods (3). The gearbox (42) is fixed on the base (41). The reluctance motor (43) is fixed to the gearbox (42) housing by bolts. The output shaft of the reluctance motor (43) is connected to the input shaft of the gearbox (42) by a coupling.

2. A horizontal directional drilling rig with a reluctance motor driven gearbox according to claim 1, characterized in that: A drill pipe holder (44) is mounted on the output shaft of the gearbox (42).

3. A horizontal directional drilling rig with a reluctance motor driven gearbox according to claim 1 or 2, characterized in that: A brake (45) is also installed on the gearbox (42), and the brake (45) is connected to the input shaft of the gearbox (42).

4. A horizontal directional drilling rig with a reluctance motor driven gearbox according to claim 1 or 2, characterized in that: The walking mechanism (6) is a track.

5. A horizontal directional drilling rig with a reluctance motor driven gearbox according to claim 1 or 2, characterized in that: It also includes four hydraulic support legs (7) that can support the ground, which are fixed at the four corners of the drilling platform (1).

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