CN111594597A - Converging differential speed reducer of power head of rotary drilling rig and corresponding power head of rotary drilling rig - Google Patents
Converging differential speed reducer of power head of rotary drilling rig and corresponding power head of rotary drilling rig Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/06—Differential gearings with gears having orbital motion
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B3/00—Rotary drilling
- E21B3/02—Surface drives for rotary drilling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/20—Arrangements for suppressing or influencing the differential action, e.g. locking devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
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Abstract
The invention relates to a confluence differential speed reducer of a power head of a rotary drilling rig and the power head of the rotary drilling rig correspondingly, wherein the confluence differential speed reducer comprises a main motor, at least one differential motor, differential transmission mechanisms and output transmission mechanisms, and the number of the differential transmission mechanisms corresponds to that of the differential motors; the main motor is connected with the output transmission mechanism, and each differential motor is connected with the output transmission mechanism through the corresponding differential transmission mechanism; the rotary drilling rig power head comprising the speed reducer can select whether to transmit the auxiliary power provided by the differential motor to the output transmission mechanism according to actual working conditions. The power head confluence differential speed reducer of the rotary drilling rig and the corresponding power head of the rotary drilling rig with the structure can meet the working requirements of different working conditions, effectively improve the construction efficiency, easily realize the working requirements of the rotary drilling rig, better protect equipment, prolong the service life of core elements and simultaneously realize environmental protection and energy conservation.
Description
Technical Field
The invention relates to the field of machinery, in particular to the field of mechanical transmission, and specifically relates to a confluence differential speed reducer of a power head of a rotary drilling rig and a corresponding power head of the rotary drilling rig.
Background
The Qinghai-Tibet railway construction pulls open the preface screen of the domestic rotary drilling rig, and one of the most key execution components of the rotary drilling rig is continuously improved and perfected from surveying and mapping simulation to adaptation to the domestic large-scale construction project. The power head reducer also experiences two periods: the method is characterized in that a double-speed planetary reducer imported from abroad and a single-speed planetary reducer imported from abroad are simulated from beginning to 2008, and the method is continued till now, even if a single import rotary drilling rig adopts a planetary reducer with a three-gear speed, the reliability of practical application is poor, the maintenance is difficult, the spare part period is long, the price is high, and the double-speed or three-speed planetary reducer is taken as the single-speed reducer or directly replaced by the single-speed reducer used conventionally in China by many users, so that the original good design intention is suddenly eliminated.
The structure of the power head of the rotary drilling rig can be seen from figure 1, and the power head in figure 1 mainly comprises a sliding frame assembly 1, a hydraulic motor 2, a speed reducer 3, a buffer device 4, a connecting plate and bracket 5, a power head box body assembly 6, a pressure plate assembly 7 and the like. Wherein the motor speed reducer has three groups.
The hydraulic power station of the rotary drilling rig usually outputs according to constant power, the rotating speed of a power head is usually 6-10r/min when rated output torque is achieved, no-load output is 21-38r/min, and the rotary drilling rig is different in size according to the specifications of the drilling rig. The soil unloading is difficult in the construction process, and particularly once the viscous soil is compacted in the drilling tool, the only soil unloading method is to frequently rotate forwards and backwards, and a drill rod is operated to collide the power head back and forth to drop the soil in the drilling tool; in addition, for the stratum with better geological conditions, the output rotating speed of the power head is often required to be higher (the output torque is not important), but because the speed reducer of the power head is in a single fixed speed ratio, efficient operation cannot be realized, on the contrary, when the stratum is hard, such as granite and the like, the maximum output torque of the power head is required (the output rotating speed is not important), the operation can only be carried out according to the design requirements of a system, a rock-entering pile is often driven, the time consumption is long, and the consumption is high, such as oil consumption, cutter teeth and the like. This has several disadvantages:
1. the drilling rod, the drilling tool and soil in the drilling tool, the weight of the medium-large rotary drilling rig is from dozens of tons to twenty-many tons or more, the power head is collided by frequent forward and reverse rotation, and huge impact inertia suffers from irregular bidirectional impact load to the power head and even a rotary drilling complete machine, so that the normal bearing clearance, gear meshing clearance and the like of the power head are damaged too early, the rotation precision of each rotating member in the power head cannot be guaranteed, various failure modes such as vibration, noise, oil leakage and even tooth breakage are generated, and huge impact noise is generated in the construction process, so that the influence on urban construction, particularly the environment caused by urban construction engineering is larger;
2. the existing rotary drilling power head speed reducer is usually a single fixed speed ratio speed reducer, in order to improve the no-load rotating speed of the rotary drilling power head, the motor setting parameters are manually and irrationally adjusted to improve the light-load rotating speed of the motor, the simple manual expansion of the torque-rotating speed output characteristic of the power head is very limited and the output characteristic is very soft, and the output requirements of a rotary drilling rig on different working conditions cannot be met, so that the service life of the motor or the speed reducer is shortened, and the maintenance and operation cost of a user is increased;
3. the construction efficiency and progress of the project are seriously influenced, and the construction cost of the project is increased.
Disclosure of Invention
In order to overcome at least one of the defects of the prior art, the invention provides the power head confluence differential speed reducer of the rotary drilling rig, which has good performance and strong adaptability.
In order to achieve the purpose, the power head confluence differential speed reducer of the rotary drilling rig is as follows:
the power head confluence differential speed reducer of the rotary drilling rig is mainly characterized in that the confluence differential speed reducer comprises a main motor, at least one differential motor, differential transmission mechanisms and output transmission mechanisms, wherein the number of the differential transmission mechanisms corresponds to that of the differential motors;
the main motor is connected with the output transmission mechanism, and each differential motor is connected with the output transmission mechanism through the corresponding differential transmission mechanism;
the main motor transmits the main power to the output transmission mechanism, and each differential motor selectively transmits the corresponding auxiliary power to the output transmission mechanism through the corresponding differential transmission mechanism.
Preferably, each of the differential transmission mechanisms includes a differential input shaft, a clutch and a differential gear pair;
each differential motor is connected with the output transmission mechanism sequentially through the corresponding differential input shaft, the corresponding clutch and the corresponding differential gear pair;
and the corresponding auxiliary power provided by the differential motor is selectively transmitted to the output transmission mechanism by controlling the clutch.
Preferably, the output transmission mechanism comprises an input spline shaft, a first planetary assembly, a second planetary assembly and an output base;
the main motor is connected with the output base through the input spline shaft, the first planetary assembly and the second planetary assembly in sequence;
each differential transmission mechanism is connected with the input spline shaft through the differential gear pair in the differential transmission mechanism.
Furthermore, the first planetary assembly comprises a first-stage sun gear, a first-stage planet gear and a differential gear ring;
the input spline shaft is connected with the second planetary assembly sequentially through the first-stage sun gear, the first-stage planet gear and the first-stage gear ring.
Furthermore, the second planetary assembly comprises a second-stage sun gear, a second-stage planet gear and a second-stage gear ring;
and the first planetary assembly is connected with the output base through the second-stage sun gear, the second-stage planet gear and the second-stage gear ring in sequence.
Preferably, when the speed reducer performs ordinary transmission, main power is transmitted to the output transmission mechanism only through the main motor; and by controlling the differential transmission mechanism corresponding to each differential motor, the corresponding differential motor does not transmit auxiliary power to the output transmission mechanism;
when the speed reducer performs differential transmission only through a part of differential motors, main power is transmitted to the output transmission mechanism through the main motor; controlling each differential transmission mechanism corresponding to the differential motor providing the auxiliary power to enable each differential motor providing the auxiliary power to transmit the auxiliary power to the output transmission mechanism, and controlling each differential transmission mechanism corresponding to each differential motor not providing the auxiliary power to enable each differential motor not providing the auxiliary power not to transmit the auxiliary power to the output transmission mechanism;
when the speed reducer performs differential transmission through all the differential motors, the main motor transmits the main power to the output transmission mechanism; and the corresponding differential motor transmits auxiliary power to the output transmission mechanism by controlling the differential transmission mechanism corresponding to each differential motor.
Preferably, the main motor is an automatic variable motor.
The power head of the rotary drilling rig is mainly characterized by comprising the confluence differential speed reducer of the power head of the rotary drilling rig.
The power head confluence differential speed reducer of the rotary drilling rig comprises a main motor, at least one differential motor, differential transmission mechanisms and output transmission mechanisms, wherein the number of the differential transmission mechanisms corresponds to that of the differential motors; the main motor is connected with the output transmission mechanism, and each differential motor is connected with the output transmission mechanism through the corresponding differential transmission mechanism; the rotary drilling rig power head comprising the speed reducer can select whether to transmit the auxiliary power provided by the differential motor to the output transmission mechanism according to actual working conditions. By adopting the power head confluence differential speed reducer of the rotary drilling rig, the rotary drilling rig can meet the working requirements of different working conditions, the construction efficiency is effectively improved, the working requirements of the rotary drilling rig can be easily met, the equipment is better protected, the service life of core elements is prolonged, and meanwhile, the environmental protection and the energy conservation are realized.
Drawings
Fig. 1a is a schematic structural diagram of a power head of a rotary drilling rig in the prior art.
Fig. 1b is a side view of a power head of a rotary drilling rig in the prior art.
Fig. 1c is a top view of a power head of a rotary drilling rig in the prior art.
Fig. 2a is a cross-sectional view of a power head confluence differential speed reducer of the rotary drilling rig in an embodiment of the invention.
Fig. 2b is a schematic structural diagram of the main motor in the direction a in fig. 2 a.
Fig. 2c is a transmission schematic diagram of the power head confluence differential speed reducer of the rotary drilling rig in fig. 2 a.
Fig. 3a is a cross-sectional view of a power head confluence differential speed reducer of the rotary drilling rig in an embodiment of the invention.
Fig. 3b is a transmission schematic diagram of a power head confluence differential speed reducer of the rotary drilling rig in fig. 3 a.
Reference numerals
1 sliding rack assembly
2 Hydraulic motor
3 speed reducer
4 buffer device
5 connecting plate and bracket
6 power head box assembly
7 platen assembly
8 differential motor
9 Main Motor
10 input spline shaft
11 first stage sun gear
12 first-stage planet wheel
13 differential gear ring
14 second stage sun gear
15 second-stage planet wheel
16 second stage gear ring
17 output base
18 differential gear pair
19 clutch
20 differential input shaft
Detailed Description
In order to more clearly describe the technical contents of the present invention, the following further description is given in conjunction with specific embodiments.
As shown in fig. 2a to fig. 3b, the power head confluence differential speed reducer of the rotary drilling rig of the invention comprises a main motor 9, at least one differential motor 8, differential transmission mechanisms and output transmission mechanisms, wherein the number of the differential transmission mechanisms corresponds to that of the differential motor 8;
the main motor 9 is connected with the output transmission mechanism, and each differential motor 8 is connected with the output transmission mechanism through the corresponding differential transmission mechanism;
the main motor 9 transmits the main power to the output transmission mechanism, and each differential motor 8 selectively transmits the corresponding auxiliary power to the output transmission mechanism through the corresponding differential transmission mechanism.
In this embodiment, each of the differential transmission mechanisms includes a differential input shaft 20, a clutch 19, and a differential gear pair 18;
each differential motor 8 is connected with the output transmission mechanism sequentially through the corresponding differential input shaft 20, the corresponding clutch 19 and the corresponding differential gear pair 18;
by controlling the clutch 19, the corresponding auxiliary power provided by the differential motor 8 is selectively transmitted to the output transmission mechanism. The clutch 19 can be controlled by a control valve, so that the rotation direction of the auxiliary motor can only be consistent with that of the main motor 9; in the control, when the auxiliary motor is started, the clutch 19 with the braking function is opened in advance by pilot control, and the auxiliary motor can be started; the auxiliary motor is in a stop state in normal operation, and the brake is in a brake state; the clutch 19 with the braking function has large transmission power which can reach 600kW, and is suitable for heavy equipment.
The clutch 19 in this embodiment is actually provided with a braking function, and the corresponding counter torque needs to be overcome in a normal state, rather than a simple clutch function.
In this embodiment, the output transmission mechanism comprises a transmission mechanism 10, a first planetary assembly, a second planetary assembly and an output base 17;
the main motor 9 is connected with the output base 17 sequentially through the first planetary assembly, the second planetary assembly and the 10;
each of the differential transmission mechanisms is connected to the differential gear pair 10 via the differential gear pair 18 in the differential transmission mechanism.
In this embodiment, the first planetary assembly includes a first stage sun gear 11, a first stage planet gear 12 and a differential ring gear 13;
the 10 is connected with the second planetary assembly sequentially through the first-stage sun gear 11, the first-stage planet gear 12 and the first-stage gear ring.
In this embodiment, the second planetary assembly includes a second stage sun gear 14, a second stage planet gear 15 and a second stage ring gear 16;
the first planetary assembly is connected with the output base 17 sequentially through the second-stage sun gear 14, the second-stage planet gear 15 and the second-stage gear ring 16.
In this embodiment, when the decelerator performs normal transmission, the main power is transmitted to the output transmission mechanism only through the main motor 9; and by controlling the differential transmission mechanism corresponding to each differential motor 8, the corresponding differential motor 8 does not transmit auxiliary power to the output transmission mechanism;
when the speed reducer performs differential transmission only through a part of the differential motor 8, main power is transmitted to the output transmission mechanism through the main motor 9; by controlling the respective differential transmission mechanisms corresponding to the differential motors 8 that provide the secondary power, so that the respective differential motors 8 that provide the secondary power transmit the secondary power to the output transmission mechanism, and by controlling the differential transmission mechanisms corresponding to the respective differential motors 8 that do not provide the secondary power, so that the respective differential motors 8 that do not provide the secondary power do not transmit the secondary power to the output transmission mechanism;
when the speed reducer performs differential transmission through all the differential motors 8, main power is transmitted to the output transmission mechanism through the main motor 9; and by controlling the differential transmission mechanism corresponding to each of the differential motors 8, the corresponding differential motor 8 transmits the secondary power to the output transmission mechanism.
In this embodiment, the main motor 9 is an automatic variable motor.
In one embodiment, the power head of the rotary drilling rig comprises the confluence differential speed reducer of the power head of the rotary drilling rig.
The power head of the rotary drilling rig adopting the confluence differential speed reducer of the power head of the rotary drilling rig has a wider torque-rotating speed output characteristic, so that the application working conditions under different geological conditions can be met, equipment can efficiently run under normal operation standards, and the confluence differential speed reducer of the rotary drilling rig has great significance for improving the construction efficiency and reducing the production cost. The power head confluence differential speed reducer of the rotary drilling rig and the control thereof in the embodiment have the following characteristics:
1. under the condition of good geological conditions, the output torque of the power head is not important, the construction efficiency can be obviously improved by high output rotating speed, and a small reduction ratio is needed;
2. for general geological conditions, the output torque and the rotating speed of the power head can be automatically matched with the corresponding drilling soil taking load;
3. for hard strata, particularly for weakly weathered hard rock strata, the rotary drilling rig needs to have enough rated output torque to drive a proper cutting tool to break rock, and the output rotating speed is not important at the moment;
4. the rotary excavating drilling machine can have the no-load output rotating speed of 4-5 times of rated load in any state, so that the construction efficiency is greatly improved, the real quick soil unloading function is realized easily, and the environment protection and energy conservation are realized while the equipment is protected and the service life of core elements is prolonged.
Namely, the rotary drilling rig adopting the power head confluence differential speed reducer of the rotary drilling rig can realize confluence differential driving, and according to rated output parameters of the rotary drilling rig: the speed ratio range of the speed reducer is determined according to the rated maximum and minimum output torque-rotating speed characteristics, the optimal mode is realized by adopting the confluence differential speed reducer of the power head of the rotary drilling rig driven by the confluence differential speed, so that the output characteristics of the power head can be completely ensured to meet the requirements, and the output performance of the power head of the rotary drilling rig can jump by one step by combining the optimal control mode of the motor.
In one embodiment, as shown in fig. 2a to 2c, the reducer comprises a differential motor 8 and a differential transmission mechanism.
In this embodiment, when the decelerator performs normal transmission, the main power is transmitted to the output transmission mechanism only through the main motor 9; the differential motor 8 does not transmit auxiliary power to the output transmission mechanism by controlling the differential transmission mechanism;
when the speed reducer performs differential transmission, main power is transmitted to the output transmission mechanism through the main motor 9; and by controlling the differential transmission mechanism, the differential motor 8 transmits the auxiliary power to the output transmission mechanism.
As shown in fig. 2a, the power head confluence differential reducer of the rotary drilling rig in this embodiment comprises a first-stage differential planet-first-stage sun gear 11, a first-stage planet gear 12 and a differential gear ring 13, a first-stage fixed-axis gear pair-differential gear pair 18 and a first-stage conventional planet-second-stage sun gear 14, a second-stage planet gear 15 and a second-stage gear ring 16;
as can be seen from fig. 2c, the power head confluence differential speed reducer of the rotary drilling rig in this embodiment is inputted by two power flows, and respectively provides a main power provided by the main motor 9 and an auxiliary power provided by the differential motor 8;
the main motor 9 delivers the main power (i.e. main power flow) to the first stage sun gear 11 through 10;
in fig. 2c, T1 denotes the input torque of the main motor 9, N1 denotes the input rotational speed of the main motor 9, T2 denotes the input torque of the differential motor 8, N2 denotes the input rotational speed of the differential motor 8, Za1 denotes the first-stage sun gear 11, Zg1 denotes the first-stage planetary gear 12, Zb1 denotes the differential ring gear 13, Za2 denotes the second-stage sun gear 14, Zg2 denotes the second-stage planetary gear 15, Zb2 denotes the second-stage ring gear 16, and Z1 and Z2 denote two gears in the differential gear pair 18, respectively.
During ordinary transmission:
the clutch 19 is used to realize zero input of the differential motor 8, and at this time, only one path of power flow input provided by the main motor 9 is transmitted to the second-stage sun gear 14, the second-stage planet and the gear ring through the first-stage sun gear 11, the first-stage planet and the differential gear ring 13 (in a fixed state), and the speed reducer is connected with the power head through the output base 17 of the speed reducer. The output of the speed reducer is composed of the output torque and the rotating speed of the second-stage planet, and the total speed ratio is composed of the common second-stage planet. As can be seen from fig. 2C, the gear ratio i of the reduction gear in this case is as follows:
i＝i1×i2＝(1+Zb1/Za1)×(1+Zb2/Za1)，
reducer output torque: tout is T1 xi
The output rotating speed of the speed reducer is as follows: nout is N1/i
Where i1 is equal to (1+ Zb1/Za1), i2 is equal to (1+ Zb2/Za1), Za1 is the number of teeth of the first-stage sun gear 11, Zb1 is the number of teeth of the differential ring gear 13, Zb2 is the number of teeth of the second-stage ring gear 16, T1 is the input torque of the main motor 9, and N1 is the input rotation speed of the main motor 9.
During differential transmission:
this retarder includes, in addition to the input of the power flow (i.e., output torque T1 and input speed N1) provided by the main motor 9, the input of the power flow (i.e., output torque T2 and input speed N2) provided by the differential motor 8 under the control of the clutch 19, and at this time, the clutch 19 is opened: by means of a differential gear pair 18 mounted on a differential input shaft 20: gear Z1 and gear Z2 drive the differential ring gear 13, and this power flow is combined with the main motor 9 power flow in the first stage planetary gearing to input the second stage sun gear 14, the second stage planets and the second stage ring gear 16 output. The output speed Nout of the speed reducer can be obtained through derivation:
Nout＝[N1/i1+N2×Zb1/(Za1+Zb1)Z2/Z1]/i2；
wherein the speed regulating part is the rear half part;
final output torque Tout of the reduction gear:
Tout＝-(T1×N1+T2×N2)/[N1/i1+N2×Zb1/(Za1+Zb1)Z2/Z1]i2；
wherein i1 is equal to (1+ Zb1/Za1), i2 is equal to (1+ Zb2/Za1), T1 is the input torque of the main motor 9, N1 is the input rotation speed of the main motor 9, T2 is the input torque of the differential motor 8, N2 is the input rotation speed of the differential motor 8, Za1 is the number of teeth of the first-stage sun gear 11, Za2 is the number of teeth of the second-stage sun gear 14, Zb1 is the number of teeth of the differential ring gear 13, Zb2 is the number of teeth of the second-stage ring gear 16, Z1 is the number of teeth of the gear Z1, and Z2 is the number of teeth of the gear Z2;
it can be seen from this that: when the differential motor 8 is simultaneously input with the main motor 9, the reducer can achieve a wide output torque and rotation speed characteristic just satisfying the above requirements.
As shown in fig. 3a and 3b, the speed reducer comprises two differential motors 8 and two differential transmission mechanisms. The reducer is a multi-stage confluence differential speed reducer for driving a power head of a rotary drilling rig.
The rotary drilling rig is a complete series of products, and in the continuous development and improvement, the multistage confluence differential driving rotary drilling rig power head confluence differential speed reducer can meet the requirements of special specifications for realizing excellent output characteristics of a key power head of the rotary drilling rig.
The speed reducer in the embodiment can meet the requirement of a rotary drilling rig of certain special specifications on the output characteristics of the power head, meanwhile, the reasonable size matching of the speed reducer and the power head is achieved, the mode of multi-stage differential power flow confluence input is the most appropriate choice, two groups of differential motors 8 are adopted in the embodiment, and in other embodiments, three or more groups of speed reducers can be included. The algorithm of the gear ratio can be referred to the algorithm in the above embodiment.
In this embodiment, when the decelerator performs normal transmission, the main power is transmitted to the output transmission mechanism only through the main motor 9; and by controlling the differential transmission mechanism corresponding to each differential motor 8, the corresponding differential motor 8 does not transmit auxiliary power to the output transmission mechanism;
when the speed reducer performs differential transmission only through a differential motor 8, main power is transmitted to the output transmission mechanism through the main motor 9; by controlling the differential transmission mechanism corresponding to the differential motor 8 which provides the secondary power, the differential motor 8 which provides the secondary power transmits the secondary power to the output transmission mechanism, and by controlling the differential transmission mechanism corresponding to the differential motor 8 which does not provide the secondary power, the differential motor 8 which does not provide the secondary power does not transmit the secondary power to the output transmission mechanism;
when the speed reducer performs differential transmission through two differential motors 8, main power is transmitted to the output transmission mechanism through the main motor 9; and by controlling the differential transmission mechanism corresponding to each of the differential motors 8, the corresponding differential motor 8 transmits the secondary power to the output transmission mechanism.
In fig. 3, T1 represents the input torque of the main motor 9, N1 represents the input rotation speed of the main motor 9, T2 represents the input torque of the differential motor 8, N2 represents the input rotation speed of the differential motor 8, Za1 represents the first-stage sun gear 11, Zg1 represents the first-stage planetary gear 12, Zb1 represents the differential ring gear 13, Za2 represents the second-stage sun gear 14, Zg2 represents the second-stage planetary gear 15, Zb2 represents the second-stage ring gear 16, and Z1 and Z2 represent two gears in the differential gear pair 18, respectively.
The motor matching can be selected in the following way:
according to the use requirement of the prior rotary drilling rig, the main motor 9 is usually composed of an automatic variable motor, and the differential motor 8 can be an automatic variable motor or a quantitative motor, and is realized according to the requirement on the output characteristic of a power head of a host:
the main motor and the differential motor are all automatic variable motors: the self-adaptive external load output characteristic of the power head of the rotary drilling rig can be realized, namely, the output torque and the rotating speed of the power head are automatically adjusted according to the external load, and a new situation is opened for intelligently operating the rotary drilling rig;
the main motor adopts an automatic variable motor, and the differential motor adopts a quantitative motor: the rotary drilling rig has the advantages that limited or single operation gears can be achieved, the rotary drilling rig is particularly useful for rotary drilling rigs with certain special specifications and functions, if the small rotary drilling rig with the specification below 200 is used, the often checked index is the construction efficiency of the rotary drilling rig, whether the rotary drilling rig has a long-term stable and reliable high-speed soil unloading function is the most critical index at the moment, and the function expected by countless users for a long time is also provided.
The main motor and the differential motor are quantitative motors: the configuration is not suitable for the current hydraulic system of the rotary drilling rig.
The converging differential speed reducer for the power head of the rotary drilling rig and the corresponding power head of the rotary drilling rig can open a precedent that the power head of the rotary drilling rig has the functions of efficient construction and efficient soil unloading for huge storage and the rotary drilling rig in manufacturing, and accords with the national direction of environmental protection and energy conservation. A differential component in a power head confluence differential speed reducer of the rotary drilling rig is a first-stage inner gear ring (namely a differential gear ring 13), a first-stage sun gear 11 and a first-stage planet gear 12 are adopted for confluence, and a second-stage sun gear 14 and a second-stage planet gear 15 in a second planet component form normal 2k-H planet transmission; the second-stage gear ring 16 is fixed, the second-stage sun gear 14 inputs and the second-stage planet gear 15 outputs, the main motor and the auxiliary motor are in positive transmission, and the two motors rotate in the same direction when differential driving is needed.
The power head of the rotary drilling rig is usually driven by more than one motor, usually 2, 3 and 4 motors are driven simultaneously, if the power head of the rotary drilling rig adopts the confluence differential speed reducer of the power head of the rotary drilling rig, the power head of the rotary drilling rig also has auxiliary motors correspondingly added, so that a plurality of main and auxiliary motors are required to be controlled simultaneously for the rotary drilling rig: the power head of the rotary drilling rig is synchronous and balanced in power, so that the power head of the rotary drilling rig is provided with a control system for controlling the motor, and the differential speed reducer is matched for use.
The power head confluence differential speed reducer of the rotary drilling rig comprises a main motor, at least one differential motor, differential transmission mechanisms and output transmission mechanisms, wherein the number of the differential transmission mechanisms corresponds to that of the differential motors; the main motor is connected with the output transmission mechanism, and each differential motor is connected with the output transmission mechanism through the corresponding differential transmission mechanism; the rotary drilling rig power head comprising the speed reducer can select whether to transmit the auxiliary power provided by the differential motor to the output transmission mechanism according to actual working conditions. By adopting the power head confluence differential speed reducer of the rotary drilling rig, the rotary drilling rig can meet the working requirements of different working conditions, the construction efficiency is effectively improved, the working requirements of the rotary drilling rig can be easily met, the equipment is better protected, the service life of core elements is prolonged, and meanwhile, the environmental protection and the energy conservation are realized.
In this specification, the invention has been described with reference to specific embodiments thereof. It will, however, be evident that various modifications and changes may be made thereto without departing from the broader spirit and scope of the invention. The specification and drawings are, accordingly, to be regarded in an illustrative rather than a restrictive sense.
Claims (8)
1. A power head confluence differential speed reducer of a rotary drilling rig is characterized by comprising a main motor, at least one differential motor, differential transmission mechanisms and output transmission mechanisms, wherein the number of the differential transmission mechanisms corresponds to that of the differential motors;
the main motor is connected with the output transmission mechanism, and each differential motor is connected with the output transmission mechanism through the corresponding differential transmission mechanism;
the main motor transmits the main power to the output transmission mechanism, and each differential motor selectively transmits the corresponding auxiliary power to the output transmission mechanism through the corresponding differential transmission mechanism.
2. The converging differential speed reducer for the power head of the rotary drilling rig according to claim 1, wherein each differential transmission mechanism comprises a differential input shaft, a clutch and a differential gear pair;
each differential motor is connected with the output transmission mechanism sequentially through the corresponding differential input shaft, the corresponding clutch and the corresponding differential gear pair;
and the corresponding auxiliary power provided by the differential motor is selectively transmitted to the output transmission mechanism by controlling the clutch.
3. The converging differential speed reducer for the power head of the rotary drilling rig according to claim 2, wherein the output transmission mechanism comprises an input spline shaft, a first planetary assembly, a second planetary assembly and an output base;
the main motor is connected with the output base through the input spline shaft, the first planetary assembly and the second planetary assembly in sequence;
each differential transmission mechanism is connected with the input spline shaft through the differential gear pair in the differential transmission mechanism.
4. The rotary drilling rig power head confluence differential speed reducer according to claim 3, wherein the first planetary assembly comprises a first-stage sun gear, a first-stage planet gear and a differential gear ring;
the input spline shaft is connected with the second planetary assembly sequentially through the first-stage sun gear, the first-stage planet gear and the first-stage gear ring.
5. The converging differential speed reducer for the power head of the rotary drilling rig according to claim 3, wherein the second planetary assembly comprises a second-stage sun gear, a second-stage planet gear and a second-stage gear ring;
and the first planetary assembly is connected with the output base through the second-stage sun gear, the second-stage planet gear and the second-stage gear ring in sequence.
6. The confluence differential speed reducer of a power head of the rotary drilling rig according to claim 1,
when the speed reducer performs ordinary transmission, the main power is transmitted to the output transmission mechanism only through the main motor; and by controlling the differential transmission mechanism corresponding to each differential motor, the corresponding differential motor does not transmit auxiliary power to the output transmission mechanism;
when the speed reducer performs differential transmission only through a part of differential motors, main power is transmitted to the output transmission mechanism through the main motor; controlling each differential transmission mechanism corresponding to the differential motor providing the auxiliary power to enable each differential motor providing the auxiliary power to transmit the auxiliary power to the output transmission mechanism, and controlling each differential transmission mechanism corresponding to each differential motor not providing the auxiliary power to enable each differential motor not providing the auxiliary power not to transmit the auxiliary power to the output transmission mechanism;
when the speed reducer performs differential transmission through all the differential motors, the main motor transmits the main power to the output transmission mechanism; and the corresponding differential motor transmits auxiliary power to the output transmission mechanism by controlling the differential transmission mechanism corresponding to each differential motor.
7. The confluence differential speed reducer for the power head of the rotary drilling rig according to claim 1, wherein the main motor is an automatic variable motor.
8. A power head of a rotary drilling rig, which is characterized by comprising the confluence differential speed reducer of the power head of the rotary drilling rig according to any one of claims 1 to 7.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010586480.XA CN111594597A (en) | 2020-06-24 | 2020-06-24 | Converging differential speed reducer of power head of rotary drilling rig and corresponding power head of rotary drilling rig |
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| CN202010586480.XA CN111594597A (en) | 2020-06-24 | 2020-06-24 | Converging differential speed reducer of power head of rotary drilling rig and corresponding power head of rotary drilling rig |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113216831A (en) * | 2021-06-03 | 2021-08-06 | 江西东锐机械有限公司 | Integrated rotary head mechanism for drilling machine |
| RU2807728C2 (en) * | 2021-07-29 | 2023-11-21 | Бейджинг Сэни Интеллиджент Маньюфэкчеринг Текнолоджи Ко., Лтд. | Power head and rotary drilling rig |
-
2020
- 2020-06-24 CN CN202010586480.XA patent/CN111594597A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113216831A (en) * | 2021-06-03 | 2021-08-06 | 江西东锐机械有限公司 | Integrated rotary head mechanism for drilling machine |
| RU2807728C2 (en) * | 2021-07-29 | 2023-11-21 | Бейджинг Сэни Интеллиджент Маньюфэкчеринг Текнолоджи Ко., Лтд. | Power head and rotary drilling rig |
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