WO2013102419A1

WO2013102419A1 - Double-power output gearbox and vehicle traction power system

Info

Publication number: WO2013102419A1
Application number: PCT/CN2012/087807
Authority: WO
Inventors: 钱兆勇; 曹万红; 龙时丹; 李海滨
Original assignee: 北京二七轨道交通装备有限责任公司
Priority date: 2012-01-05
Filing date: 2012-12-28
Publication date: 2013-07-11
Also published as: CN102537261B; CN102537261A

Abstract

A double-power output gearbox and a vehicle traction power system used for railway maintenance equipment. In the gearbox: one end of an input shaft (2) is connected to a low-speed power source (18, 19); a first end of an output shaft (3) is used to output a driving force and a second end of the output shaft (3) is connected to a high-speed power source; a primary driving gear member is fixed on the input shaft (2), a primary driven gear member (32) is fixed on an intermediate shaft (4); a secondary driving gear member (31) is fixed on the intermediate shaft (4), a secondary driven gear member (26) is sleeved over the output shaft (3); a first clutch member (27) is fixed to the secondary driven gear member (26), a second clutch member (34) is fixedly connected to the output shaft (3) in the rotating direction of the output shaft (3); a clutch manipulation mechanism (7) is connected to the second clutch member (34), and used to drive the second clutch member (34) to slide along the axial direction of the output shaft (3) to engage with the first clutch member (27) or disengage from the first clutch member (27). The device is capable of implementing flexible switching between a high-speed working condition and a low-speed working condition, meanwhile meeting a high power output demand under the high-speed working condition, and ensuring the speed precision and working quality in the low-speed working condition.

Description

Dual power output gearbox and vehicle traction power system

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to mechanical structure technology, and more particularly to a dual power output gearbox and a vehicle traction power system. Background technique

Recently, with the gradual development of railways in the direction of high speed and heavy load, the efficiency and accuracy requirements for the maintenance of railway lines have been increasing, thus promoting the development of large-scale road maintenance machinery and equipment. In order to improve work efficiency, large-scale road maintenance machinery is required to reach the work area at the fastest speed. In operation, it is required to operate at a lower speed and maintain high speed accuracy. Therefore, the transmission system of the working equipment must be capable of operating at a higher power in both high-speed traction and low-speed operation. The core component of the above drive system is a gearbox that enables reliable conversion of operating conditions. In all cases, it is driven by a hydraulic motor. As shown in FIG. 1, the gearbox 300 for railway maintenance machinery in the prior art is provided with two clutches, namely: a first clutch 100 and a second clutch 200, wherein the first clutch 100 is a hydraulic friction plate clutch, The second clutch 200 is a hydraulic friction plate clutch or a jaw mechanical clutch. When in a high speed condition, the first clutch 100 is engaged and the second clutch 200 is disengaged, and the high speed hydraulic motor 110 drives the wheel 400 to rotate at a high speed through the first clutch 100 via the gearbox 300. In the low speed condition, the second clutch 200 is coupled and the first clutch 100 is disengaged. The low speed hydraulic motor 210 drives the wheel 400 to rotate at a low speed through the second clutch 200 via the gear case 300.

The prior art gearbox for railway maintenance machinery as shown in Fig. 1 generally has the following drawbacks:

(1) Under high-speed traction conditions, since the power source is a hydraulic motor, the transmission power of a single gearbox is small, so it cannot meet the high-power output demand under high-speed conditions.

(2) When the first clutch 100 and the second clutch 200 use the hydraulic friction plate clutch, the hydraulic friction plate clutch cannot achieve reliable self-locking, and the clutch failure may cause work. Interference, causing irreparable damage to the system.

(3) When the second clutch 200 is equipped with a hydraulic friction plate clutch, it is easy to slip during start-up or sudden load change. Since accurate transmission ratio cannot be achieved, speed accuracy and work quality in low-speed working conditions cannot be guaranteed.

(4) When the second clutch 200 is equipped with a jaw-type mechanical clutch, the transmission power is low and reliable self-locking cannot be achieved.

The invention provides a dual power output gearbox and a vehicle traction power system, so as to solve the problem that the gearbox and the vehicle traction power system used in the railway maintenance machinery and equipment in the prior art cannot achieve reliable self-locking and cannot meet the high speed working condition. High-power output requirements and technical problems that cannot guarantee speed accuracy and job quality in low-speed conditions.

The present invention provides a dual power output gearbox, comprising a box body, wherein: the input shaft, the intermediate shaft and the output shaft are parallel to each other and are disposed in the box body;

One end of the input shaft is connected to a low speed power source;

a first end of the output shaft is for outputting a driving force, and a second end of the output shaft is for connecting to a high speed power source;

a primary transmission gear train comprising a primary drive gear member and a primary driven gear member, the primary drive gear member being fixedly disposed on the input shaft, the primary driven gear member being fixedly disposed in the middle On the shaft

a secondary transmission gear train comprising a secondary drive gear member and a secondary driven gear member, wherein the secondary drive gear member is fixedly disposed on the intermediate shaft, and the secondary driven gear member is sleeved on the output On the shaft

a clutch, comprising: a first clutch member and a second clutch member, wherein the first clutch member is fixedly disposed with the secondary driven gear member, and the second clutch member is in the rotation direction of the output shaft and the output Fixed connection of the shaft;

a clutch operating mechanism is disposed in the casing and connected to the second clutch member for driving the second clutch member to slide along the axial direction of the output shaft to be in contact with or disengaged from the first clutch member Engage.

In the dual power output gearbox as described above, one input shaft and the corresponding primary drive gear member are one input unit, and the number of the input units is one or two. When inputting unit When the number is two, the two input units are symmetrically arranged with respect to the intermediate axis.

In the dual power output gearbox as described above, the clutch operating mechanism includes: a solenoid valve; a driving cylinder, the driving cylinder is connected to the solenoid valve, and under the control of the solenoid valve, the piston of the driving cylinder a rod reciprocating; an action rod, one end of the rod is connected to the piston rod of the driving cylinder, and reciprocates under the driving of the piston rod; a fork is connected to the rod, and The second clutch member is connected to drive the second clutch member to slide along the axial direction of the output shaft under the driving of the action rod.

In the dual power output gearbox as described above, the lubrication system includes: a first oil supply gear disposed in linkage with the second driven gear member; and a second oil supply gear disposed in linkage with the output shaft; The gear oil pumps are respectively connected to the first oil supply gear and the second oil supply gear, and the lubricating oil is driven by the first oil supply gear and the second oil supply gear to perform lubrication.

In addition, the present invention provides a vehicle traction power system including a wheel set, a gear box, a low speed power source, and a high speed power source, wherein the gear box uses the dual power output gear box provided by the present invention; An input shaft of the gearbox is coupled to the low speed power source; a first end of the output shaft of the gearbox is coupled to a drive shaft of the wheelset, and a second end of the output shaft of the gearbox is coupled to the high speed The power source is connected. The low speed power source is a variable hydraulic motor; the high speed power source is a hydraulic transmission box or a traction motor.

In summary, the dual power output gearbox and the vehicle traction power system provided by the present invention have the following beneficial effects as compared with the prior art:

(1) The present invention is provided with a clutch and a clutch operating mechanism, thereby enabling flexible switching between high-speed traction and low-speed operation, thereby achieving dual power output, that is, high-speed traction conditions, by high power The high-speed power source drives the high-speed motion of the working equipment to meet the high-power output demand under high-speed conditions. In the low-speed working condition, it is powered by a low-speed power source disposed at one end of the input shaft, and passes through the two-stage transmission gear train. After deceleration, the driving equipment is driven at a low speed, so that an accurate gear ratio can be achieved, thereby ensuring speed accuracy and work quality at low speed conditions.

(2) Since the clutch cymbal of the present invention can contact the first clutch member and the second clutch member that are engaged with each other, and the specially arranged tooth profile can ensure reliable self-locking, and the system is not damaged when starting or sudden load change . DRAWINGS

The drawings used in the embodiments or the description of the prior art are briefly described. It is obvious that the drawings in the following description are some embodiments of the present invention, and are not creative to those skilled in the art. Other drawings can also be obtained from these drawings on the premise of labor.

Figure 2 is a front elevational view of the dual power output gearbox of the first embodiment of the present invention;

Figure 3 is a cross-sectional view taken along line A-A of Figure 2;

4 is a plan and partial cross-sectional view of a dual power output gearbox according to a first embodiment of the present invention; and FIG. 5 is a schematic structural view of a clutch operating mechanism of a dual power output gearbox according to a first embodiment of the present invention. The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. The embodiments are a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

Embodiment 1

The dual power output gearbox provided in the first embodiment of the present invention includes a casing, an input shaft, an intermediate shaft, an output shaft, a primary transmission gear train, a secondary transmission gear train, a clutch, and a clutch operating mechanism. The input shaft, the intermediate shaft and the output shaft are parallel to each other and are disposed in the casing. One end of the input shaft is connected to the low speed power source; the first end of the output shaft is for outputting the driving force, the second end of the output shaft is for connecting with the high speed power source; the first stage transmission gear train includes the first stage driving gear member And a primary driven gear member, the primary drive gear member is fixedly disposed on the input shaft, and the primary driven gear member is fixedly disposed on the intermediate shaft; the secondary transmission gear train includes the secondary drive gear member and the secondary driven device a gear member, the secondary drive gear member is fixedly disposed on the intermediate shaft, and the secondary driven gear member is sleeved on the output shaft; the clutch includes a first clutch member and a second clutch member, the first clutch member and the second slave device The gear member is fixedly disposed, and the second clutch member is fixedly connected with the output shaft in the rotation direction of the output shaft; The operating mechanism is disposed in the box and connected to the second clutch member for driving the second clutch member to slide along the axial direction of the output shaft to be in contact with or disengaged from the first clutch member.

The dual power output gearbox of the first embodiment achieves flexible switching between high speed and low speed conditions through the clutch and clutch operating mechanism, and simultaneously meets the high power output requirement under high speed conditions, and ensures low speed operation conditions. The speed accuracy and the quality of the work are beneficial.

In the dual power output gearbox of the embodiment, the primary drive gear member is preferably a gear shaft, and the primary driven gear member is preferably a gear; the secondary drive gear member is preferably a gear shaft, and the secondary driven gear member is preferably Gear ring.

In the dual power output gearbox of the embodiment, the first clutch member is preferably an internal tooth clutch fixed to the inner side of the gear ring, and the second clutch member is preferably an external tooth clutch, and the output shaft is preferably disposed along the axial direction of the output shaft. There are external splines, and the external tooth clutch is preferably provided with an internal spline coupled to the external spline.

See Figure 2 through Figure 5. 2 is a front view of a dual power output gearbox according to a first embodiment of the present invention, and FIG. 3 is a cross-sectional view of the dual power output gearbox of the first embodiment of the present invention. Fig. 5 is a structural schematic view showing the clutch operating mechanism of the dual power output gearbox according to the first embodiment of the present invention. As shown in FIG. 2, FIG. 3 and FIG. 4, the dual power output gearbox of the first embodiment of the present invention comprises: a casing 1, two identical input shafts 2, an output shaft 3, an intermediate shaft 4, a lubrication system 5, The clutch 6, the clutch operating mechanism 7, and the mount 8.

The case 1 comprises: an upper case 9, a middle case 10, a lower case 11, an observation hole cover 12, a ventilator 13 and a gland 14.

The intermediate shaft 4 includes a bearing 33, and a gear shaft 31 and a gear 32 are disposed in the axial direction.

Two input shafts 2 are symmetrically disposed on both sides of the intermediate shaft 4, and are respectively provided with a gear shaft 15 that meshes with the gear 32 of the intermediate shaft 4, and a bearing 16 and a bearing 17 for supporting the gear shaft 15, the gear shaft 15 And the gear 32 constitutes a primary transmission gear train, and the gear ratio can be Z31/Z83, and one end of the two input shafts 2 is coupled by a spline to serve as a low-speed power source to provide a driving force for the first drive motor 18 and the second drive motor 19. The first drive motor 18 and the second drive motor 19 may be variable hydraulic motors, such as variable displacement piston motors, or other types of motors for providing driving power to the work equipment under low speed operating conditions.

One end of the output shaft 3 is provided with a first flange 21 connected to the power bogie of the working equipment, and the other end of the output shaft 3 is provided with a second flange 22 connected to the high-speed traction power unit. The output shaft 3 is further provided with a gear ring 26 meshing with the gear shaft 31 of the intermediate shaft 4, and a bearing 24 and a bearing sleeve 25. The gear shaft 31 and the gear ring 26 constitute a secondary transmission gear train, and the gear ratio can be Z25/Z78. The output shaft 3 is capable of providing dual power output, one end of which is connected to the power bogie of the working equipment through the first flange 21, such as the drive shaft of the wheel set, and the other end is connected to the high speed traction power unit via the second flange 22, for example: A hydraulic transmission box, traction motor or other high-power power output unit for high-speed power source to meet the high-power output requirements under high-speed traction conditions.

The clutch 6 is disposed on the output shaft 3 and includes an internal clutch 27 and an external clutch 34. The internal teeth 39 of the internal clutch 27 and the external teeth 38 of the external clutch 34 are engageable with each other. Since the teeth of the dog clutch have a special structure, it is ensured that the internal tooth clutch 27 meshes smoothly with the external tooth clutch 34, and can be reliably self-locked, thereby preventing system damage due to a sudden jump in state during operation.

The internal clutch 27 and the gear ring 26 are respectively machined with positioning faces for mutual positioning to ensure coaxiality, and the internal clutch 27 and the gear ring 26 are integrally coupled to each other by the pin 28, the nut 29 and the nut lock pad 30. The output shaft 3 includes a spline shaft 35. The spline shaft 35 is provided with an external spline 37 in the axial direction, and the external tooth clutch 34 is provided with an internal spline 36 coupled with the external spline 37, thereby making the external tooth The clutch 34 is rotatable in synchronism with the output shaft 3 to transmit torque to the output shaft 3, and the external clutch 34 is axially slidable along the output shaft 3.

As shown in FIG. 5, the clutch operating mechanism 7 includes: a solenoid valve 40, a driving cylinder 41, a working rod 42 whose one end is connected to a piston rod of the driving cylinder 41, a shifting fork 43 connected to the acting rod 42, and a supporting fork 43. Support rod 44. The solenoid valve 40 reciprocates the piston rod of the driving cylinder 41 under the control of the automatic control system, thereby driving the action rod 42 to reciprocate and driving the shift fork 43 to move the external tooth clutch 34 to make the external tooth clutch 34 and the internal tooth clutch 27 contact engagement or disengagement. In addition, the other end portion 45 of the action rod 42 is also connected with a manual operating mechanism (not shown) for manually driving the action rod when the automatic control system fails or the solenoid valve 40 or the drive cylinder 41 fails. 42 reciprocates to drive the shift fork 43 to toggle the external clutch 34 into or out of engagement with the internal clutch 27. Since the clutch operating mechanism 7 can drive the clutch 6 under the control of the remote automatic control system to realize the conversion between the high-speed traction condition and the low-speed working condition, the clutch 6 can be driven by the manual operation to realize the working condition conversion, thereby ensuring In the event of a failure of the automatic control system, the condition can be changed in time. Change, thereby avoiding the blockage of the railway line caused by the high speed movement of the working equipment.

As shown in FIG. 3, when the clutch operating mechanism 7 drives the external clutch 34 to slide along the output shaft 3 and mesh with the internal clutch 27, the driving forces provided by the two drive motors 18, 19 input from the input shaft 2 are shown. The gear shaft 31 is transmitted to the intermediate shaft 4 through the gear shaft 15 and the gear 32, and then transmitted to the output shaft 3 through the gear ring 26 and the clutch 6, and drives the working device through the first flange 21 at a speed range of 0 to 15 km/h. Constant speed operation (low speed operation), because the electro-hydraulic proportional control hydraulic system can ensure that the drive motors 18, 19 operate at the required speed and maintain high speed accuracy, and the above-mentioned transmission gear train and dog clutch can ensure accurate The gear ratio, therefore, can finally ensure that the working equipment operates at a low speed speed with high speed accuracy; and when the clutch operating mechanism 7 drives the external tooth clutch 34 to be separated from the internal tooth clutch 27, it is input by the second flange 22 The driving force provided by the high-speed traction power unit will be directly transmitted to the first flange 21 through the output shaft 3 and drive the working equipment at a speed of 120 km/h. Speed movement (high-speed traction condition), so as to quickly reach the working place, at this time, the intermediate shaft 4 and the input shaft 2 and the output shaft 3 are completely separated, thereby preventing the gearbox and the drive motor 18, 19 from being damaged by the power back-drive. . Therefore, the dual power output gearbox provided by the invention can realize flexible switching between high-speed traction and low-speed operation, thereby realizing dual power output, that is, high-speed traction by high-power traction under high-speed traction conditions. The power unit drives the working equipment to move at high speed to meet the high-power output demand under high-speed working conditions; in the low-speed working condition, it is powered by the driving motors 18 and 19 disposed at the end of the input shaft, and passes through the input shaft 2 The two-stage transmission gear train to the intermediate shaft 4 and the intermediate shaft 4 to the output shaft 3 decelerates to drive the operating equipment at a low speed, thereby achieving an accurate gear ratio, thereby ensuring speed accuracy and work quality at low speed conditions.

As shown in FIG. 3, the lubrication system 5 in the dual power output gearbox of the first embodiment of the present invention includes: a first oil supply gear 46 disposed in linkage with the gear ring 26, and a second oil supply gear disposed in linkage with the output shaft 3. 47. Two gear oil pumps 48 respectively matched with the first oil supply gear 46 and the second oil supply gear 47, and a filter 50 for filtering lubricating oil for supplying the filtered lubricating oil to the gear oil pump 48 The oil distribution plate 49 and the oil supply line 51 for transferring the lubricating oil to a position requiring lubrication. When the external clutch 34 meshes with the internal clutch 27, the first oil supply gear 46 and the second oil supply gear 47 respectively drive the respective gear oil pumps 48 and deliver the lubricating oil to the position requiring lubrication through the oil supply line 51. The gear oil pump 48 driven by the first oil supply gear 46 operates under rated conditions, and can provide a large flow of lubricating oil, and the other is provided by the second oil supply gear. The 47-drive gear pump 48 has a lower speed and can assist in lubrication. When the external tooth clutch 34 is separated from the internal tooth clutch 27, that is, when the gear box operates in a high speed traction condition, the first oil supply gear 46 does not operate, and only the second oil supply gear 47 rotates at a high speed and drives the gear oil pump matched thereto. 48 A sufficient amount of lubricating oil is delivered through the oil supply line 51 to a position requiring lubrication. Since the lubrication system of the present invention can provide reliable lubrication under both high-speed traction and low-speed operation, the normal operation of the gearbox is ensured.

In addition, the structure of the dual power output gearbox of the first embodiment of the present invention described above can be further modified, for example, the port 3⁄4:

(1) If an input shaft 2 and its corresponding gear shaft 15 (ie, a primary drive gear member) are regarded as one input unit, the number of the input shaft units may also be one or more, when there is only one When the unit is input, the input unit can be disposed on either side of the intermediate shaft. For the detailed description of the structure, refer to the description in the first embodiment, and details are not described herein again.

(2) The clutch can also have a variety of operating conditions, for example, not only can the clutch operation be realized, but also the shifting operation can be realized.

(3) The clutch operating mechanism can also be driven by hydraulic pressure or by a linkage mechanism.

(4) In order to improve the lubrication effect, it is also possible to provide a plurality of sets of gear oil pumps. In addition, the gear oil pump can be driven not only by the oil supply gear but also directly at the shaft end.

In addition, the dual power output gearbox of the embodiment of the present invention described above can be applied to a traction power system of a railway work vehicle, the vehicle traction power system including: a wheel set, a gear box, a low speed power source, and a high speed power source, wherein The gearbox can employ the dual power output gearbox of the first embodiment of the invention as described above, the input shaft 2 of the gearbox being coupled to a low speed power source, such as a first drive motor 18 and a second drive motor 19, the gearbox The first flange 21 of the output shaft 3 is coupled to the drive shaft of the wheel set, and the second flange 22 of the output shaft 3 of the gearbox is coupled to a high speed power source. The low-speed power source can be a variable hydraulic motor, such as a variable displacement piston motor, or other types of motors, which can provide driving force for the working equipment under low-speed working conditions; the high-speed power source can be a hydraulic transmission box, Traction motor or other high-power power output unit to meet the high-power output requirements under high-speed traction conditions. For a description of the specific structure and working principle of the gearbox, refer to the description in the first embodiment, and details are not described herein.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not limited thereto; although the present invention has been described in detail with reference to the foregoing embodiments, The skilled person should understand that the technical solutions described in the foregoing embodiments may be modified, or some of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the embodiments of the present invention. The scope of the technical solution.

Claims

Claim

A dual power output gearbox, comprising a casing, further comprising: an input shaft, an intermediate shaft and an output shaft, which are parallel to each other and disposed in the casing; one end of the input shaft is used for Connected to a low speed power source;

2. The dual power output gearbox according to claim 1, wherein: the primary drive gear member is a gear shaft, the primary driven gear member is a gear; and the secondary drive gear member is a gear The shaft, the secondary driven gear member is a gear ring.

3. The dual power output gearbox according to claim 2, wherein: the first clutch member is an internal tooth clutch fixed to an inner side of the gear ring, and the second clutch member is an external tooth clutch. An external spline is disposed on the output shaft along the axial direction of the output shaft, and the external clutch is provided with an internal spline coupled to the external spline.

4. The dual power output gearbox according to claim 3, wherein: the gear ring and the internal tooth clutch are respectively machined with positioning faces for mutual positioning, and are locked to each other by a pin shaft, a nut and a nut lock pad. Connected into one.

A dual power output gearbox according to any one of claims 1 to 4, wherein: an input shaft and a corresponding primary drive gear member are one input unit, and the number of said input units For one or two.

6. A dual power output gearbox according to claim 5 wherein: said two input units are symmetrically disposed relative to said intermediate axis.

7. The dual power output gearbox of any of claims 1-4, wherein the clutch operating mechanism comprises:

The electromagnetic valve;

Driving a cylinder, the driving cylinder is connected to the electromagnetic valve, and under the control of the electromagnetic valve, the piston rod of the driving cylinder reciprocates;

Acting rod, one end of the action rod is connected to the piston rod of the driving cylinder, and reciprocates under the driving of the piston rod;

And a shifting fork connected to the action rod and connected to the second clutch member for driving the second clutch member to slide along the axial direction of the output shaft by the driving rod.

8. The dual power output gearbox according to claim 7, wherein: the other end of the utility rod is further coupled with a manual operating mechanism for manually reciprocating the action bar.

9. The dual power output gearbox of claim 1 further comprising a lubrication system in the gearbox, the lubrication system comprising:

a first oil supply gear, which is arranged in linkage with the second driven gear member;

a second oil supply gear, which is arranged in linkage with the output shaft;

Two gear oil pumps are respectively connected to the first oil supply gear and the second oil supply gear, and the lubricating oil is driven by the first oil supply gear and the second oil supply gear to perform lubrication.

10. A vehicle traction power system comprising a wheelset, a gearbox, a low speed power source and a high speed power source, characterized in that: the dual power output gearbox of any of claims 1-9 is used as the gearbox An input shaft of the gearbox is coupled to the low speed power source; a first end of the output shaft of the gearbox is coupled to a drive shaft of the wheelset, and a second end of the output shaft of the gearbox is The high speed power source is connected.

1 1. The vehicle traction power system according to claim 10, wherein: the low speed power source is a variable hydraulic motor; and the high speed power source is a hydraulic transmission box or a traction motor.