Dual-power multi-drive speed reduction transmission device

Abstract

The utility model discloses a dual-power multi-drive speed reduction transmission device, which belongs to the technical field of drilling machines and comprises a speed reduction box body upper rack, a speed reduction box body lower rack, a power mechanism, a transmission mechanism, an outer drill rod shaft and an inner drill rod. A plurality of groups of transmission mechanisms are arranged between the reduction gearbox body upper rack and the reduction gearbox body lower rack, and the transmission mechanisms are in one-to-one correspondence with the power mechanisms; the outer side of the outer drill rod shaft is fixedly connected with an outer drill rod driven gear, and the outer side of the inner drill rod shaft is fixedly provided with an inner drill rod driven gear; the transmission mechanism comprises an input shaft, an outer drill rod transmission assembly and an inner drill rod transmission assembly, in this way, each set of power mechanism corresponds to one set of input shaft and the outer drill rod driving gear, the inner drill rod driving gear, the reversing gear and the reversing shaft on the input shaft, and the multiple sets of power mechanisms drive the outer drill rod shaft and the inner drill rod shaft in parallel at the same time; in this way, parallel power is achieved, the torque of the inner drill rod and the torque of the outer drill rod can be flexibly adjusted at the same time, top drive, middle drive and bottom drive switching of the same drilling machine can be flexibly achieved through the whole device, and the stratum adaptability and construction efficiency of equipment are greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of geotechnical engineering construction, specifically is: dual drive, dual rotational speed output's multifunctional drilling machine reduction transmission device. BACKGROUND

[0002] The driving principle in the field at present is: 1) dual motor or hydraulic motor as the driving element, through equal proportion reduction, a large gear is driven as the output end, and work is output. Single output shaft cannot meet the demand of multiple rotating directions in construction. 2) dual motor or hydraulic motor as the driving element, through speed regulation of different speed ratios of the reduction mechanism, two large gears are driven to realize double rotational speed and double output. The existing double drive output two groups of power outputs are independent of each other, and the cooperation and complementation of the two groups of power outputs in construction cannot be realized. 3) single motor or hydraulic motor as the driving element, through the reduction mechanism, the upper and lower coaxial large gears are driven at the same time, double output ends are realized, and work is output. Single power source driving double outputs will limit the power of each output end, and is only suitable for the working conditions with small torque work requirement, and has great technical limitations in complex working conditions with large torque.

[0003] The driving reduction mechanism is an important part of the drilling machine, and directly affects the performance of the drilling machine.

[0004] The existing driving reduction mechanism generally adopts the form of single motor driving of each group of output power. With the increase of power demand, only the power of single motor can be increased. The increase of motor power inevitably leads to the rapid increase of the volume and weight of the motor, and then all mechanisms such as the drilling machine frame matched with the motor, the drilling machine chassis and the like need to be increased, thereby the overall volume and weight of the drilling machine are rapidly increased. In the use process of the large drilling machine, the terrain adaptability is poor, the movement is difficult, and the cost of entering and leaving the field is high.

[0005] The arrangement of the existing driving reduction mechanism is generally divided into top drive, middle drive and bottom drive: 1) top drive: the driving device is placed on the top of the drill rod, and the disadvantage is that the center of gravity is high, and a large volume and mass heavy drilling machine is needed to meet the stability demand of the whole. 2) bottom drive: the driving device is placed at the lowermost position of the drilling machine on the ground, and the disadvantage is that since the drill rod needs to pass through the power device, the drill rod needs to adopt a light rod (mostly square drill rod) matched with the outer shape of the driving device, and the length, volume and installation of the drill bit are greatly limited due to the limitation of the drilling machine ground clearance and the volume of the through hole of the driving device. 3) middle drive: the driving device is placed in the middle of the drilling machine frame, which reduces the overall center of gravity to a certain extent, but cannot flexibly adjust the driving form according to the specific working condition.

[0006] The three forms have respective advantages and disadvantages, but the existing driving reduction mechanism can only meet one driving form and cannot be switched to other driving forms, so that the construction party needs to purchase a whole new drilling machine for other driving forms, which makes the construction party need to purchase more equipment, increases the purchase cost and reduces the utilization rate of the existing equipment.

[0007] Therefore, the utility model discloses a double-power multi-mode driving reduction transmission device which meets double outputs, double rotating speeds and multi-shaft power complementary to meet various actual demands in construction operation and reduce repeated purchase of equipment. Utility model content

[0008] In view of the above-mentioned defects of the prior art, the utility model provides a double-power multi-mode driving reduction transmission device.

[0009] To achieve the above object, the utility model realizes through the following technical scheme:

[0010] A double-power multi-mode driving reduction transmission device, comprising a reduction gearbox upper rack, a reduction gearbox lower rack, a power mechanism, a transmission mechanism, an outer drill rod shaft and an inner drill rod shaft.

[0011] The outer drill rod shaft is rotatably connected to the reduction gearbox lower rack through a bearing, and the inner drill rod shaft is rotatably connected to the reduction gearbox upper rack through a bearing; the outer drill rod shaft and the inner drill rod shaft are coaxially arranged and used for driving the drill rod to rotate.

[0012] A plurality of groups of transmission mechanisms are arranged between the reduction gearbox upper rack and the reduction gearbox lower rack, and the transmission mechanisms correspond to the power mechanism one by one.

[0013] The outer side of the outer drill rod shaft is fixedly connected with an outer drill rod driven gear, and the outer side of the inner drill rod shaft is fixedly connected with an inner drill rod driven gear; the outer drill rod driven gear and the inner drill rod driven gear are used for transmitting torque and reducing speed.

[0014] The transmission mechanism comprises an input shaft, an outer drill rod transmission assembly and an inner drill rod transmission assembly; the input shaft is rotatably connected to the reduction gearbox upper rack and the reduction gearbox lower rack through a bearing; the driving end of the power mechanism is fixedly connected to the input shaft through a shaft coupling and coaxially arranged, so that the power mechanism can coaxially transmit rotating torque to the input shaft.

[0015] The upper end of the input shaft is provided with the inner drill rod transmission assembly, and the lower end of the input shaft is provided with the outer drill rod transmission assembly; the outer drill rod transmission assembly and the inner drill rod transmission assembly of all the transmission mechanisms are respectively in transmission connection with the outer drill rod driven gear and the inner drill rod driven gear, so that the input shaft transmits torque to the outer drill rod shaft and the inner drill rod shaft, and realizes the synchronous reverse rotation effect of the outer drill rod shaft and the inner drill rod shaft.

[0016] Further, the outer drill rod transmission assembly comprises an outer drill rod drive gear fixedly installed at the lower end of the input shaft, and the outer drill rod drive gear is in meshing connection with the outer drill rod driven gear.

[0017] Further, the inner drill rod transmission assembly comprises a bridge plate, an inner drill rod drive gear, a reversing gear and a reversing shaft, the upper end of the reversing shaft is rotatably connected with the upper rack of the reduction box body through a bearing, and the lower end of the reversing shaft is rotatably connected with the bridge plate through a bearing; the reversing gear is fixedly connected with the reversing shaft;

[0018] The inner drill rod drive gear is fixedly installed at the upper end of the input shaft, and the reversing gear is in meshing connection with the inner drill rod drive gear and the inner drill rod driven gear.

[0019] Further, the inner drill rod shaft is internally provided with a drill rod channel for the drill rod to pass through the whole driving reduction mechanism, and the drill rod channel is provided with a spline and a flange structure for drill rod connection.

[0020] Further, the bearing between the outer drill rod shaft and the lower rack of the reduction box body is a thrust bearing.

[0021] Further, the upper end of the bearing between the inner drill rod shaft and the upper rack of the reduction box body is provided with a limiting end cover.

[0022] Further, a sealing ring is arranged between the outer drill rod shaft and the lower rack of the reduction box body at the lower side of the lower rack of the reduction box body, and the sealing ring and the outer cylindrical surface of the outer drill rod shaft are in precise fit to form a sealing structure.

[0023] Further, the number of teeth of the outer drill rod drive gear and the outer drill rod driven gear is respectively set as 17 and 80, and the number of teeth of the inner drill rod drive gear, the reversing gear and the inner drill rod driven gear is respectively set as 23, 20 and 59.

[0024] Compared with the prior art, the utility model has the advantages that: 1, the utility model discloses a group of power mechanisms correspond to a group of input shafts and the outer drill rod drive gear, the inner drill rod drive gear, the reversing gear and the reversing shaft on it, and a plurality of power mechanisms drive the outer drill rod shaft and the inner drill rod shaft simultaneously in parallel, thereby realizing parallel power, and the parallel power can meet the flexible allocation of the inner and outer drill rod torques, and according to the different loads of the inner and outer drill rods, the power output by the motor will be automatically concentrated on the high-load drill rod, if the rock-breaking drill bit at the top of the inner drill rod has a low load in a soft stratum, then most of the power of the motor will be used to drive the stirring load, at this time, the motor power is sufficient, and the stirring drill tool speed can be correspondingly improved, so as to improve the construction efficiency, when tunneling meets a hard soil layer or even a hard stratum, then most of the power is automatically concentrated on the rock-breaking drill bit at the top of the inner drill rod to ensure normal tunneling, and the above parallel power forms perfect power automatic distribution, and greatly improves the stratum adaptability and construction efficiency of the equipment.

[0025] 2. The inner drill rod shaft is provided with a drill rod passage for the drill rod to pass through the overall drive reduction mechanism, the drill rod passage is provided with a drill rod drive spline and a drill rod drive flange two drill rod drive structures, which can be flexibly arranged in the top drive and the middle drive to adopt the power output mode of the flange connected drill rod, and the bottom drive adopts the power output mode of the outer spline on the drill rod matched with the inner spline of the reduction drive device, so that when using the same drilling machine, the drive reduction mechanism is arranged at different positions of the drilling machine and different fixed components are replaced, flexible switching between various driving forms can be realized, equipment utilization is greatly improved, and the equipment procurement cost of the construction party is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creating labor.

[0027] Figure 1 A perspective view of the double-power multi-mode drive reduction transmission device of the present application Figure One ;

[0028] Figure 2 A perspective view of the double-power multi-mode drive reduction transmission device of the present application Figure Two ;

[0029] Figure 3 A top view of the double-power multi-mode drive reduction transmission device of the present application

[0030] Figure 4 A sectional view along the A-A direction of Figure 3 ;

[0031] Figure 5 A sectional view along the B-B direction of Figure 3 .

[0032] The numbers in the figure respectively represent:

[0033] 1, reduction gearbox upper rack; 2, reduction gearbox lower rack; 3, power mechanism; 4, transmission mechanism; 41, input shaft; 42, outer drill rod transmission assembly; 421, outer drill rod drive gear; 43, inner drill rod transmission assembly; 431, bridge plate; 432, inner drill rod drive gear; 433, reversing gear; 434, reversing shaft; 5, outer drill rod shaft; 51, outer drill rod driven gear; 52, sealing ring; 6, inner drill rod shaft; 61, inner drill rod driven gear; 62, limit end cover. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model below. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0035] Embodiment one: in some embodiments, referring to the drawings of the specification Figures 1-5 A double-power multi-mode driving speed reduction transmission device, comprising a speed reduction box upper rack 1, a speed reduction box lower rack 2, a power mechanism 3, a transmission mechanism 4, an outer drill rod shaft 5 and an inner drill rod shaft 6;

[0036] The speed reduction box upper rack 1 and the speed reduction box lower rack 2 constitute a support structure;

[0037] The power mechanism 3 is used for providing torque;

[0038] The transmission mechanism 4 is used for transmitting the rotary torque after speed reduction to the outer drill rod shaft 5 and the inner drill rod shaft 6;

[0039] The outer drill rod shaft 5 is rotatably connected with the speed reduction box lower rack 2 through a bearing, and the inner drill rod shaft 6 is rotatably connected with the speed reduction box upper rack 1 through a bearing; the outer drill rod shaft 5 and the inner drill rod shaft 6 are coaxially arranged and used for driving the drill rod to rotate;

[0040] A limiting end cover 62 is arranged at the upper end of the bearing between the inner drill rod shaft 6 and the speed reduction box upper rack 1;

[0041] The bearing between the outer drill rod shaft 5 and the speed reduction box lower rack 2 is a thrust bearing, which can effectively bear the axial load force;

[0042] A sealing ring 52 is arranged between the outer drill rod shaft 5 and the speed reduction box lower rack 2 at the lower side of the speed reduction box lower rack 2, and the sealing ring 52 and the outer cylindrical surface of the outer drill rod shaft 5 are arranged in precise fit to constitute a sealing structure.

[0043] The power mechanism 3 can adopt a motor, a hydraulic motor or a pneumatic motor; the power mechanism 3 is arranged in several groups, and the power mechanism 3 is fixedly installed at the upper end of the speed reduction box upper rack 1;

[0044] The several groups of transmission mechanisms 4 are arranged between the speed reduction box upper rack 1 and the speed reduction box lower rack 2, and the transmission mechanisms 4 correspond to the power mechanisms 3 one by one;

[0045] The outer drill rod shaft 5 is fixedly connected with an outer drill rod driven gear 51, and the inner drill rod shaft 6 is fixedly installed with an inner drill rod driven gear 61; the outer drill rod driven gear 51 and the inner drill rod driven gear 61 are used for transmitting torque and reducing speed;

[0046] The transmission mechanism 4 comprises an input shaft 41, an outer drill rod transmission assembly 42 and an inner drill rod transmission assembly 43; the input shaft 41 is rotatably connected with the upper rack 1 and the lower rack 2 of the speed reducer box through bearings; the driving end of the power mechanism 3 is fixedly connected with the input shaft 41 through a shaft coupling and coaxially arranged, so that the power mechanism 3 can coaxially transmit the rotating torque to the input shaft 41;

[0047] The upper end of the input shaft 41 is provided with the inner drill rod transmission assembly 43, and the lower end of the input shaft 41 is provided with the outer drill rod transmission assembly 42; all the outer drill rod transmission assemblies 42 and the inner drill rod transmission assemblies 43 of the transmission mechanism 4 are respectively in transmission connection with the outer drill rod driven gear 51 and the inner drill rod driven gear 61, so that the input shaft 41 transmits the torque to the outer drill rod shaft 5 and the inner drill rod shaft 6, and the synchronous reverse rotating effect of the outer drill rod shaft 5 and the inner drill rod shaft 6 is realized;

[0048] The utility model discloses a plurality of motor power parallel connection, under the premise of satisfying technical requirement big power, maximum limit reduces single motor demand, for example in the existing drilling machine, double 160kw motor can only realize single axle 160kw's theoretical output upper limit, power parallel connection uses double 90kw motor under the condition to reach same theoretical output upper limit, but the volume, weight of motor will greatly reduce, realizes many input axle corresponding single output axle, and simultaneously through the adjustment of motor output power in construction, the flexible control whole output is realized.

[0049] The outer drill rod transmission assembly 42 comprises an outer drill rod driving gear 421, which is fixedly installed at the lower end of the input shaft 41; the outer drill rod driving gear 421 is in meshing connection with the outer drill rod driven gear 51, so as to transmit the rotating torque of the power mechanism 3 to the outer drill rod shaft 5.

[0050] The number of teeth of the outer drill rod driving gear 421 and the outer drill rod driven gear 51 is respectively set as 17 and 80.

[0051] The inner drill rod transmission assembly 43 comprises a bridge plate 431, an inner drill rod driving gear 432, a reversing gear 433 and a reversing shaft 434; the upper end of the reversing shaft 434 is rotatably connected with the upper rack 1 of the speed reducer box through a bearing, and the lower end of the reversing shaft 434 is rotatably connected with the bridge plate 431 through a bearing; the reversing gear 433 is fixedly connected with the reversing shaft 434.

[0052] The inner drill rod driving gear 432 is fixedly installed at the upper end of the input shaft 41, and the reversing gear 433 is simultaneously meshed with the inner drill rod driving gear 432 and the inner drill rod driven gear 61, so that the rotating torque of the power mechanism 3 is transmitted to the inner drill rod shaft 6.

[0053] The number of teeth of the inner drill rod driving gear 432, the reversing gear 433 and the inner drill rod driven gear 61 are respectively set as 23, 20 and 59.

[0054] In the utility model, in order to avoid the situation that the rear gear set is not assembled, the integral assembly processing mode is adopted, so that all gears in the gear set are processed with high precision and the correct assembly relationship is maintained.

[0055] In the utility model, each group of power mechanism 3 corresponds to a group of input shaft 41 and the outer drill rod driving gear 421, the inner drill rod driving gear 432, the reversing gear 433 and the reversing shaft 434 on it, and a plurality of groups of power mechanism 3 simultaneously drive the outer drill rod shaft 5 and the inner drill rod shaft 6 in parallel, so that parallel power is realized, and the parallel power can simultaneously meet the flexible allocation of the inner and outer drill rod torque; according to the different loads of the inner and outer drill rods, the power output by the motor will be automatically concentrated on the high-load drill rod; if the inner drill rod top rock-breaking drill bit has a low load in a soft stratum, most of the power of the motor will be used to drive the stirring load, at this time, the motor power is sufficient, and the stirring drill tool speed can be correspondingly improved, so that the construction efficiency is improved; when tunneling encounters hard soil or even hard geology, most of the power is automatically concentrated on the inner drill rod top rock-breaking drill bit to ensure normal tunneling; the above parallel power forms perfect power automatic distribution, and the stratum adaptability and construction efficiency of the equipment are greatly improved.

[0056] In some embodiments, please refer to the accompanying drawings of the specification Figure 1 The inner side of the inner drill rod shaft 6 is provided with a drill rod passage for the drill rod to pass through the integral driving reduction mechanism; the drill rod passage is provided with two drill rod driving structures, i.e., a drill rod driving spline and a drill rod driving flange; when the top drive and the middle drive are flexibly arranged, the power output mode of the flange connected drill rod can be used, and the power output mode of the spline matching can be used when the bottom drive is used; so that when the same drilling machine is used, the driving reduction mechanism is arranged at different positions of the drilling machine, and different fixed components are replaced, so that flexible switching between various driving forms can be realized, the utilization rate of the equipment is greatly improved, and the equipment procurement cost of the construction party is reduced.

[0057] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than limit them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced equivalently; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A dual-power multi-drive reduction transmission device, comprising a reduction box upper frame (1), a reduction box lower frame (2), a power mechanism (3), a transmission mechanism (4), an outer drill rod shaft (5) and an inner drill rod shaft (6), characterized in that: The outer drill rod shaft (5) is rotatably connected to the lower frame (2) of the reduction gear box through a bearing, and the inner drill rod shaft (6) is rotatably connected to the upper frame (1) of the reduction gear box through a bearing; the outer drill rod shaft (5) and the inner drill rod shaft (6) are coaxially arranged and used to drive the drill rod to output rotation; A plurality of transmission mechanisms (4) are arranged between the upper frame (1) of the reduction gearbox and the lower frame (2) of the reduction gearbox, and the transmission mechanisms (4) correspond to the power mechanisms (3) one by one. An outer drill rod driven gear (51) is fixedly connected to the outer side of the outer drill rod shaft (5), and an inner drill rod driven gear (61) is fixedly installed to the outer side of the inner drill rod shaft (6); the outer drill rod driven gear (51) and the inner drill rod driven gear (61) are used to transmit torque and reduce speed; The transmission mechanism (4) includes an input shaft (41), an outer drill rod transmission assembly (42), and an inner drill rod transmission assembly (43). The input shaft (41) is rotatably connected to the reduction gearbox upper frame (1) and the reduction gearbox lower frame (2) via a bearing. The driving end of the power mechanism (3) is fixedly connected to the input shaft (41) via a coupling and is coaxially arranged. An inner drill rod transmission assembly (43) is provided at the upper end of the input shaft (41), and an outer drill rod transmission assembly (42) is provided at the lower end of the input shaft (41); the outer drill rod transmission assembly (42) and the inner drill rod transmission assembly (43) of all transmission mechanisms (4) are respectively connected to the outer drill rod driven gear (51) and the inner drill rod driven gear (61), so as to enable the input shaft (41) to transmit torque to the outer drill rod shaft (5) and the inner drill rod shaft (6), thereby achieving a synchronous reverse rotation effect of the outer drill rod shaft (5) and the inner drill rod shaft (6).

2. The dual-power multi-drive reduction transmission device according to claim 1, characterized in that: The outer drill rod transmission assembly (42) comprises an outer drill rod driving gear (421), which is fixedly mounted on the lower end of the input shaft (41) and meshedly connected with the outer drill rod driven gear (51).

3. The dual-power multi-drive reduction transmission device according to claim 2, characterized in that: The inner drill rod transmission assembly (43) includes a bridge plate (431), an inner drill rod driving gear (432), a reversing gear (433) and a reversing shaft (434); the upper end of the reversing shaft (434) is rotatably connected to the upper frame (1) of the reduction gear box through a bearing, and the lower end of the reversing shaft (434) is rotatably connected to the bridge plate (431) through a bearing; the reversing gear (433) is fixedly connected to the reversing shaft (434); The inner drill rod driving gear (432) is fixedly mounted on the upper end of the input shaft (41), and the reversing gear (433) is meshedly connected with the inner drill rod driving gear (432) and the inner drill rod driven gear (61).

4. The dual-power multi-drive reduction transmission device according to claim 1, characterized in that: A drill rod passage for the drill rod to pass through the integral drive reduction mechanism is provided on the inner side of the inner drill rod shaft (6); a spline and a flange structure for connecting the drill rod are provided on the drill rod passage.

5. The dual-power multi-drive reduction transmission device according to claim 1, characterized in that: The bearing between the outer drill rod shaft (5) and the lower frame (2) of the reduction box body is a thrust bearing.

6. The dual-power multi-drive reduction transmission device according to claim 1, characterized in that: A limiting end cover (62) is provided at the upper end of the bearing between the inner drill rod shaft (6) and the upper frame (1) of the reduction box body.

7. The dual-power multi-drive reduction transmission device according to claim 1, characterized in that: The outer drill rod shaft (5) is located at the lower side of the reduction gear box lower frame (2) and is provided with a sealing ring (52) between the lower side and the reduction gear box lower frame (2). The sealing ring (52) and the outer cylindrical surface of the outer drill rod shaft (5) are precisely matched to form a sealing structure.

8. The dual-power multi-drive reduction transmission device according to claim 3, characterized in that: The number of teeth of the outer drill rod driving gear (421) and the outer drill rod driven gear (51) are set to 17 and 80 respectively, and the number of teeth of the inner drill rod driving gear (432), the reversing gear (433) and the inner drill rod driven gear (61) are set to 23, 20 and 59 respectively.

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