Extended-range rotary drilling rig and control system thereof

Abstract

The utility model discloses a range-extended rotary drilling rig and a control system thereof, the range-extended rotary drilling rig comprises an external charging port, a power battery pack, a high-voltage distribution box, a range extender, a winch motor, a main pump motor and a power head motor, the power battery pack is electrically connected with a battery control system, and the power battery pack is electrically connected with the range extender through the high-voltage distribution box; the range extender comprises a generator, an engine and a range extender controller electrically connected with the generator and the engine, the generator is electrically connected with a generator controller, the engine is electrically connected with an engine control system, the range extender is electrically connected with a winch motor, a main pump motor and a power head motor through a high-voltage distribution box, and the winch motor is connected with a winch. The main pump motor is connected with a hydraulic system, the hydraulic system is hydraulically connected with an oil cylinder and a hydraulic motor, and the power head motor is connected with a power head; the whole machine has good fuel economy, good working efficiency and stability, and further has certain emergency anti-risk capacity.

Description

Technical Field

[0001] The utility model belongs to the technical field of rotary drilling rigs, and in particular relates to an extended-range rotary drilling rig and a control system thereof. Background Art

[0002] Rotary drilling rig is a kind of engineering machinery suitable for drilling holes in building foundation engineering. It is widely used in municipal construction, highway bridges, high-rise buildings and other foundation construction projects. It can be matched with different drilling tools and is suitable for dry (short spiral) or wet (rotary bucket) and rock formation (core drill) drilling operations.

[0003] The technical route of traditional rotary drilling rigs is mainly to use the engine system to drive the hydraulic oil circuit system to realize various oil circuit actions of the rotary drilling rig, including the travel of the rotary drilling rig and the lifting and rotation of the power head. This technical route has a single power, and most of the engine works in the low efficiency area, resulting in low working efficiency of the whole machine. In addition, due to the incomplete combustion of fuel in traditional rotary drilling rigs, environmental pollution and other problems occur, and the fuel economy is poor, the cost of use is too high, and the noise and thermal balance performance of the whole machine are relatively poor. In summary, there is an urgent need for an extended-range rotary drilling rig and its control system. Utility Model Content

[0004] In order to solve part or all of the technical problems existing in the above-mentioned prior art, the utility model provides an extended-range rotary drilling rig and a control system thereof.

[0005] In the first aspect, the utility model discloses a control system for an extended-range rotary drilling rig, including an external charging port, a power battery pack, a high-voltage distribution box, a range extender, a winch motor, a main pump motor, and a power head motor, wherein:

[0006] The power battery pack is electrically connected to a battery control system, the external charging port is electrically connected to the power battery pack through the on-board charger, and the power battery pack and the range extender are electrically connected through a high-voltage distribution box;

[0007] The range extender includes a generator, an engine, and a range extender controller electrically connected to the generator and the engine, the generator is electrically connected to the generator controller, the engine is electrically connected to the engine control system, and the range extender is electrically connected to the winch motor, the main pump motor, and the power head motor through the high-voltage distribution box;

[0008] The power battery pack, the hoisting motor, and the main pump motor are all electrically connected to a motor controller, the hoisting motor is connected to a hoist, the main pump motor is connected to a hydraulic system, the hydraulic system is hydraulically connected to an oil cylinder and a hydraulic motor, and the power head motor is connected to a power head.

[0009] Furthermore, in the control system of the above-mentioned extended-range rotary drilling rig, the hoisting motor, the main pump motor, and the power head motor are all electrically connected to the power battery pack.

[0010] Furthermore, in the control system of the above-mentioned extended-range rotary drilling rig, the power battery pack, the hoisting motor, the main pump motor, the power head motor, the high-voltage distribution box, and the range extender are all connected to a thermal management system.

[0011] Furthermore, in the control system of the above-mentioned extended-range rotary drilling rig, the hoisting motor, the main pump motor, and the power head motor can all recover electrical energy to the power battery pack.

[0012] In the second aspect, the utility model discloses an extended-range rotary drilling rig, comprising a walking system, a platform arranged at the top of the walking system, a mast arranged above the platform, and the power head arranged at one end of the mast, a fuel tank, a hydraulic oil tank, and a power distribution module are arranged between the platform and the mast, and the extended-range rotary drilling rig includes the above-mentioned extended-range rotary drilling rig control system, wherein the range extender, the winch motor, the main pump motor, and the power head motor of the control system of the extended-range rotary drilling rig are arranged between the platform and the mast, and the external charging port of the control system of the extended-range rotary drilling rig is arranged on one side of the power distribution module.

[0013] Furthermore, in the above-mentioned extended-range rotary drilling rig, the power distribution module includes a power battery pack, a high-voltage distribution box, an on-board charger, a battery control system, and a thermal management system.

[0014] The extended-range rotary drilling rig and its control system of the utility model have the following advantages and positive effects:

[0015] (1) Since the range extender of the utility model only participates in the electrical system of the whole machine and does not directly participate in the mechanical transmission system of the whole machine, the engine can always work in the high-efficiency zone, thereby improving the fuel economy of the whole machine. Moreover, the whole machine is driven only by the motor, which has the advantages of low-speed constant torque and high-speed constant power, and has a faster response speed, thereby improving the working efficiency and stability of the rotary drilling rig. When a problem occurs with the range extender, it can also be powered by the power battery pack, thereby improving the emergency risk resistance capability of the whole machine.

[0016] (2) When the rotary drilling rig is idle, it can be charged by connecting to an industrial power supply through an external charging port, which reduces the cost of using the whole machine while also reducing dependence on traditional energy. The energy recovery function further improves the fuel economy of the whole machine, and the thermal management system can achieve cooling and heat dissipation of the modules connected to it, so that the operating temperature of the above modules is maintained within a stable range, ensuring the normal operation of the rotary drilling rig. In addition, an energy recovery module is also provided in the control system, which greatly improves fuel economy and energy recovery. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings in the following descriptions are only used to further understand the embodiments of the utility model and constitute a part of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0018] Figure 1 It is a working principle diagram of the control system of the extended-range rotary drilling rig of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the extended-range rotary drilling rig of the utility model;

[0020] Figure 3 It is a top view of the extended-range rotary drilling rig of the utility model;

[0021] Figure 4 It is a left side view of the extended-range rotary drilling rig of the utility model;

[0022] Figure 5 It is a rear view of the extended-range rotary drilling rig of the utility model.

[0023] Description of reference numerals:

[0024] 1-Generator controller, 2-Engine control system, 3-Range extender controller, 4-Generator, 5-Engine, 6-Range extender, 7-Power battery pack, 8-Battery control system, 9-Onboard charger, 10-Thermal management system, 11-High voltage distribution box, 12-Motor controller, 13-Winch motor, 14-Main pump motor, 15-Power head motor, 16-Winch, 17-Hydraulic system, 18-Power head, 19-Cylinder, 20-Hydraulic motor, 21-External charging port, 22-Travel system, 23-Platform, 24-Mast, 25-Fuel tank, 26-Hydraulic oil tank, 27-Power distribution module. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in combination with the specific embodiments of the utility model and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] like Figures 1 to 5 As shown, in the first aspect, the utility model discloses a control system for an extended-range rotary drilling rig, including an external charging port 21, a power battery pack 7, a high-voltage distribution box 11, a range extender 6, a winch motor 13, a main pump motor 14, and a power head motor 15, wherein the power battery pack 7 is electrically connected to a battery control system 8, the external charging port 21 is electrically connected to the power battery pack 7 through an on-board charger 9, and the power battery pack 7 and the range extender 6 are electrically connected through the high-voltage distribution box 11; the range extender 6 includes a generator 4, an engine 5, and a range extender controller 3 electrically connected to the generator 4 and the engine 5, and the generator 4 is electrically connected to the range extender 6. It is connected to a generator controller 1, the engine 5 is electrically connected to an engine control system 2, the range extender 6 only participates in the electrical system of the whole machine, and does not directly participate in the mechanical transmission system of the whole machine, and the range extender 6 is electrically connected to a winch motor 13, a main pump motor 14, and a power head motor 15 through a high-voltage distribution box 11; the power battery pack 7, the winch motor 13, and the main pump motor 14 are all electrically connected to a motor controller 12, the winch motor 13 is connected to a winch 16, the main pump motor 14 is connected to a hydraulic system 17, the hydraulic system 17 is hydraulically connected to an oil cylinder 19 and a hydraulic motor 20, and the power head motor 15 is connected to a power head 18.

[0027] Furthermore, in the control system of the extended-range rotary drilling rig of the utility model, the hoisting motor 13 , the main pump motor 14 , and the power head motor 15 are all electrically connected to the power battery pack 7 .

[0028] Furthermore, in the control system of the extended-range rotary drilling rig of the utility model, the power battery pack 7, the winch motor 13, the main pump motor 14, the power head motor 15, the high-voltage distribution box 11, and the range extender 6 are all connected to the thermal management system 10. With such a configuration, the thermal management system 10 can realize cooling and heat dissipation of the modules connected thereto, so that the operating temperature of the above modules is maintained within a stable range, thereby ensuring the normal operation of the above modules.

[0029] Furthermore, in the control system of the extended-range rotary drilling rig of the utility model, the winch motor 13, the main pump motor 14, and the power head motor 15 can all recover electrical energy to the power battery pack 7. With this arrangement, excess energy during the operation of the winch motor 13, the main pump motor 14, and the power head motor 15 can be recovered into the power battery pack 7, thereby improving fuel economy and energy recovery.

[0030] Secondly, the utility model discloses an extended-range rotary drilling rig, comprising a walking system 22, a platform 23 arranged at the top of the walking system 22, a mast 24 arranged above the platform 23, and a power head 18 arranged at one end of the mast 24, a fuel tank 25, a hydraulic oil tank 26, and a power distribution module 27 are arranged between the platform 23 and the mast 24, and the extended-range rotary drilling rig includes the above-mentioned extended-range rotary drilling rig control system, wherein the range extender 6, the winch motor 13, the main pump motor 14, and the power head motor 15 of the control system of the extended-range rotary drilling rig are arranged between the platform 23 and the mast 24, and the external charging port 21 of the control system of the extended-range rotary drilling rig is arranged on one side of the power distribution module 27.

[0031] Furthermore, in the extended-range rotary drilling rig of the utility model, the power distribution module 27 includes a power battery pack 7, a high-voltage distribution box 11, an on-board charger 9, a battery control system 8, and a thermal management system 10. In this way, the power battery pack 7, the high-voltage distribution box 11, the on-board charger 9, the battery control system 8, and the thermal management system 10 are integrated together, saving space on the platform 23, and a counterweight block is provided on the power distribution module 27, so that the power distribution module 27 can play a counterweight role.

[0032] The control principle of the extended-range rotary drilling rig of the utility model is:

[0033] Step 1: The range extender 6 supplies power to the hoisting motor 13, the main pump motor 14, and the power head motor 15; the range extender 6 supplies power to the hoisting motor 13, the main pump motor 14, and the power head motor 15 through the high-voltage distribution box 11;

[0034] Step 2: The main pump motor 14 drives the hydraulic system 17 to realize the oil circuit action of the rotary drilling rig, the winch motor 13 drives the winch 16 to realize the lifting action of the power head 18, and the power head motor 15 drives the power head 18 to realize the rotation action of the power head 18.

[0035] Furthermore, in the control system of the extended-range rotary drilling rig of the utility model, the power battery pack 7 is electrically connected to the winch motor 13, the main pump motor 14, and the power head motor 15. The winch motor 13, the main pump motor 14, and the power head motor 15 can all be powered by the power battery pack 7, and the power battery pack 7 can be charged by the range extender 6. In the process of the range extender 6 supplying power to each motor, a part of the electric energy is transmitted to the power battery pack 7 to charge it. When a problem occurs in the range extender 6, it can also be powered by the power battery pack 7, thereby improving the emergency risk resistance capability of the entire machine.

[0036] Furthermore, in the control system of the extended-range rotary drilling rig of the utility model, the power battery pack 7 can be charged through the external charging port 21. With such an arrangement, when the rotary drilling rig is idle, it can be charged by electrically connecting to an industrial power supply through the external charging port 21, and the external charging port 21 can charge the power battery pack 7 through the on-board charger 9.

[0037] In summary, compared with the prior art, the extended-range rotary drilling rig and its control system of the utility model have the following advantages and positive effects:

[0038] (1) In the present invention, since the range extender 6 is only involved in the electrical system of the whole machine and not directly involved in the mechanical transmission system of the whole machine, the engine 5 can be kept operating in the high-efficiency zone, thereby improving the fuel economy of the whole machine. Moreover, the whole machine is driven only by the motor, which has the advantages of low-speed constant torque and high-speed constant power, and has a faster response speed, thereby improving the working efficiency and stability of the rotary drilling rig. When a problem occurs with the range extender 6, the power battery pack 7 can also be used to supply energy, thereby improving the emergency risk resistance capability of the whole machine.

[0039] (2) When the rotary drilling rig is idle, it can be charged by connecting to an industrial power source through the external charging port 21, which reduces the cost of using the whole machine while also reducing dependence on traditional energy. The energy recovery function further improves the fuel economy of the whole machine, and the thermal management system 10 can achieve cooling and heat dissipation of the modules connected thereto, so that the operating temperature of the above modules is maintained within a stable range, ensuring the normal operation of the rotary drilling rig. In addition, an energy recovery module is also provided in the control system, which greatly improves fuel economy and energy recovery.

[0040] It should be noted that, in this article, unless otherwise clearly specified and limited, the term "connection" or its synonyms should be understood in a broad sense. For example, "connection" can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances. Moreover, expressions such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. At the same time, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such a process, method, article or device. In addition, "front", "back", "left", "right", "upper" and "lower" in this article are all referenced to the placement state shown in the accompanying drawings.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A control system for an extended-range rotary drilling rig, characterized in that: It includes an external charging port, a power battery pack, a high-voltage distribution box, a range extender, a winch motor, a main pump motor, and a power head motor, including: The power battery pack is electrically connected to a battery control system, the external charging port is electrically connected to the power battery pack through an on-board charger, and the power battery pack and the range extender are electrically connected through a high-voltage distribution box; The range extender includes a generator, an engine, and a range extender controller electrically connected to the generator and the engine, the generator is electrically connected to the generator controller, the engine is electrically connected to the engine control system, and the range extender is electrically connected to the winch motor, the main pump motor, and the power head motor through the high-voltage distribution box; The power battery pack, the hoisting motor, and the main pump motor are all electrically connected to a motor controller, the hoisting motor is connected to a hoist, the main pump motor is connected to a hydraulic system, the hydraulic system is hydraulically connected to an oil cylinder and a hydraulic motor, and the power head motor is connected to a power head.

2. The control system of the extended-range rotary drilling rig according to claim 1, characterized in that: The hoisting motor, the main pump motor and the power head motor are all electrically connected to the power battery pack.

3. The control system of the extended-range rotary drilling rig according to claim 1, characterized in that: The power battery pack, the hoisting motor, the main pump motor, the power head motor, the high-voltage distribution box, and the range extender are all connected to a thermal management system.

4. The control system of the extended-range rotary drilling rig according to claim 1, characterized in that: The hoisting motor, the main pump motor and the power head motor can all recover electrical energy to the power battery pack.

5. An extended-range rotary drilling rig, comprising a travel system, a platform disposed at the top of the travel system, a mast disposed above the platform, and the power head disposed at one end of the mast, wherein a fuel tank, a hydraulic oil tank, and a power distribution module are disposed between the platform and the mast, and characterized in that: The extended-range rotary drilling rig comprises the control system of the extended-range rotary drilling rig according to any one of claims 1 to 4, wherein the range extender, the winch motor, the main pump motor and the power head motor of the control system of the extended-range rotary drilling rig are arranged between the platform and the mast, and the external charging port of the control system of the extended-range rotary drilling rig is arranged on one side of the power distribution module.

6. The extended-range rotary drilling rig according to claim 5, characterized in that: The power distribution module includes a power battery pack, a high-voltage distribution box, an on-board charger, a battery control system, and a thermal management system.

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