High-speed high-driving-force hydraulic drive axle assembly for harvester

Abstract

The utility model discloses a high-speed high-driving-force hydraulic drive axle assembly for a harvester, which comprises a drive axle shell, and further comprises a power input unit which comprises an input shaft rotationally arranged in the drive axle shell and used for inputting power, and a first gear, a second gear and a third gear which are arranged on the outer side of the input shaft and of which the outer diameters are sequentially increased; the speed change unit comprises a first transmission shaft rotationally arranged in the drive axle shell and used for transmitting power, and a fourth gear, a fifth gear and a sixth gear sequentially rotationally arranged on the outer side of the first transmission shaft and used for being meshed with the first gear, the second gear and the third gear. A fourth gear, with the largest diameter, on a first transmission shaft is adjusted to be meshed with a first gear, with the smallest diameter, on an input shaft through a speed change unit, and a second gear, a sixth gear, a seventh gear and a third gear are all in a neutral gear state; the input shaft can drive the first gear to drive the fourth gear to rotate to complete climbing work only by supplying smaller force, and insufficient traction force caused by steep gradient is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of grain harvester, concretely to high -speed high driving force hydraulic drive axle assembly for harvester. BACKGROUND

[0002] In recent years, the market demand of large self -propelled grain combine (the whole machine weight is in 8-13 tons vehicle type) is prosperous, and this kind of large self -propelled grain combine has always been matched with hydraulic drive axle, and the structure of the hydraulic drive axle of this kind of grain combine has the following defects in the use process:

[0003] 1, the traction of the hydraulic drive axle assembly is insufficient, especially after the place with relatively steep slope or the place with relatively deep operation site ditch is particularly obvious;

[0004] 2, the grain harvester improves the vehicle speed and becomes a kind of trend, and the existing harvester hydraulic drive axle usually adopts two gear variable speed groups in two states of harvesting and non-harvesting to perform speed change, and the driving speed range is between 0-20km / h, which can not meet the demand of the existing market.

[0005] Therefore, in order to solve such problems, the market urgently needs a new type of high-speed high driving force hydraulic drive axle assembly for grain harvester.

[0006] The above content is only used to assist understanding the technical scheme of the present application, and does not represent the acknowledgement of the above content as the closest prior art. INVENTION CONTENTS

[0007] The utility model aims at providing high-speed high driving force hydraulic drive axle assembly for harvester to solve the problem of insufficient traction of the harvester hydraulic drive axle in the prior art in the high-speed driving and the road section with relatively steep slope or relatively deep operation site ditch.

[0008] In order to achieve the above object, the utility model provides the following technical scheme:

[0009] The high-speed high driving force hydraulic drive axle assembly for harvester comprises a drive axle shell, and further comprises:

[0010] The power input unit comprises an input shaft rotatingly arranged in the drive axle shell for inputting power, a first gear, a second gear and a third gear arranged outside the input shaft and having an outer diameter increasing in turn;

[0011] The speed change unit comprises a first transmission shaft rotatingly arranged in the drive axle shell for transmitting power, a fourth gear, a fifth gear and a sixth gear rotatingly arranged outside the first transmission shaft for being meshed with the first gear, the second gear and the third gear respectively;

[0012] The outer diameters of the fourth gear, the sixth gear and the seventh gear are gradually reduced, and are used for switching the gear of the grain harvester.

[0013] Further, the sixth gear is fixedly connected with a second sleeve on one side of the seventh gear, and one end of the second sleeve is fixedly connected with the seventh gear relative to the sixth gear;

[0014] The second sleeve is connected with the first transmission shaft outside through the involute spline;

[0015] The second sleeve is provided with a second annular groove outside, which is used for driving the sixth gear and the seventh gear to switch positions along the outside of the first transmission shaft.

[0016] Further, the fourth gear is fixedly connected with a first sleeve on one side;

[0017] The first sleeve is connected with the first transmission shaft outside through the involute spline;

[0018] The first sleeve is provided with a first annular groove outside, which is used for driving the fourth gear to switch positions along the outside of the first transmission shaft.

[0019] Further, the transmission unit further comprises:

[0020] A first engaging sleeve is rotatably sleeved outside the second annular groove;

[0021] A second engaging sleeve is rotatably sleeved outside the first annular groove;

[0022] A shift soft shaft is slidingly inserted into the inside of the drive axle housing, and one end of the first engaging sleeve and the second engaging sleeve is fixedly sleeved outside the shift soft shaft;

[0023] A fifth gear is fixedly sleeved outside the first transmission shaft and located between the fourth gear and the sixth gear.

[0024] Further, a plurality of groups of pin holes are equidistantly arranged inside the shift soft shaft at the inner wall of the drive axle housing;

[0025] Interlocking pins are slidingly inserted into the pin holes corresponding to the inner wall of the drive axle housing, which are used for locking the shift soft shaft after the shifting is completed.

[0026] Further, it further comprises a power output unit;

[0027] The power output unit comprises:

[0028] A second transmission shaft is rotatably connected inside the drive axle housing;

[0029] An eighth gear and a ninth gear are fixedly sleeved outside the second transmission shaft in sequence, and the eighth gear is engaged with the fifth gear.

[0030] Further, the power output unit further comprises:

[0031] A third transmission shaft is rotationally connected inside the drive axle housing, and two ends of the third transmission shaft are connected with the tracks on both sides of the harvester respectively, so as to drive the tracks of the harvester to advance.

[0032] A differential shaft is arranged outside the third transmission shaft, and the differential shaft is engaged with the eighth gear through a gear.

[0033] Compared with the prior art, the utility model has the advantages that:

[0034] 1、The utility model discloses a transmission principle drawing of the utility model, through the speed change unit, the fourth gear with the maximum diameter on the first transmission shaft is adjusted to be engaged with the first gear with the minimum diameter on the input shaft, and the second gear, the sixth gear and the third gear are all in the idle state, at this time, according to the lever principle, the input shaft only needs to supply smaller force to drive the first gear to drive the fourth gear to rotate and complete the climbing work, and the insufficient traction caused by the steeper slope is avoided.

[0035] 2、The utility model discloses a transmission principle drawing of the utility model, through the speed change unit, the seventh gear with the minimum diameter on the first transmission shaft is switched to be engaged with the third gear with the maximum diameter on the input shaft, at this time, even if the input shaft is relatively slow, the seventh gear is speeded up through the third gear, and the high-speed driving of the harvester can still be satisfied. BRIEF DESCRIPTION OF DRAWINGS

[0036] Fig. 1 It is the transmission principle drawing of the utility model;

[0037] Fig. 2 It is the internal structure schematic view of the hydraulic drive axle of the utility model;

[0038] Fig. 3 It is the cooperation relation drawing of the first engaging sleeve and the second engaging sleeve of the utility model.

[0039] 100, drive axle housing; 1, power input unit; 11, input shaft; 12, first gear; 13, second gear; 14, third gear; 2, gear shifting unit; 21, first transmission shaft; 22, fourth gear; 221, first sleeve; 222, first annular groove; 23, fifth gear; 24, sixth gear; 241, second sleeve; 242, second annular groove; 25, seventh gear; 26, first engaging sleeve; 27, second engaging sleeve; 28, shift lever; 281, pin hole; 29, interlocking pin; 3, power output unit; 31, second transmission shaft; 311, parking brake; 32, eighth gear; 33, ninth gear; 34, differential shaft; 35, third transmission shaft; 351, service brake. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0041] Please refer to Figs. 1-3 The present application provides a technical solution:

[0042] The high-speed high-driving-force hydraulic drive axle assembly for a harvester comprises a drive axle housing 100 and further comprises:

[0043] The power input unit 1 comprises an input shaft 11 rotatingly arranged in the drive axle housing 100 for inputting power, and a first gear 12, a second gear 13 and a third gear 14 arranged outside the input shaft 11 and having outer diameters gradually increasing;

[0044] The gear shifting unit 2 comprises a first transmission shaft 21 rotatingly arranged in the drive axle housing 100 for transmitting power, and a fourth gear 22, a fifth gear 23 and a sixth gear 24 rotatingly arranged outside the first transmission shaft 21 in sequence for engaging with the first gear 12, the second gear 13 and the third gear 14 respectively;

[0045] The fourth gear 22, the sixth gear 24 and the seventh gear 25 have outer diameters gradually decreasing, and are used for switching the gear positions of the grain harvester.

[0046] It should be noted that when a larger power is required for climbing, the speed change unit 2 adjusts the fourth gear 22 with the largest diameter on the first transmission shaft 21 to mesh with the first gear 12 with the smallest diameter on the input shaft 11, while the second gear 13, the sixth gear 24, and the seventh gear 25, the third gear 14 are all in the neutral state, at this time, according to the principle of the lever, the input shaft 11 only needs to supply a smaller force to drive the first gear 12 to rotate the fourth gear 22 to complete the climbing work, avoiding insufficient traction caused by steep slope;

[0047] When the harvester needs to proceed at high speed, the speed change unit 2 switches the seventh gear 25 with the smallest diameter on the first transmission shaft 21 to mesh with the third gear 14 with the largest diameter on the input shaft 11, at this time, even if the input shaft 11 rotates slowly, the third gear 14 can still speed up the seventh gear 25 to meet the high-speed driving of the harvester.

[0048] Among them, the fourth gear 22, the sixth gear 24, and the seventh gear 25 are rotationally connected with the first transmission shaft 21 through bearings.

[0049] As an improvement, the sixth gear 24 is fixedly connected with a second sleeve 241 on one side of the seventh gear 25, and one end of the second sleeve 241 relative to the sixth gear 24 is fixedly connected with the seventh gear 25.

[0050] The second sleeve 241 is connected outside the first transmission shaft 21 through involute splines, ensuring that the second sleeve 241 can drive the first transmission shaft 21 to rotate when rotating;

[0051] The second sleeve 241 is provided with a second annular groove 242 outside, which is used to drive the sixth gear 24 and the seventh gear 25 to switch positions along the outside of the first transmission shaft 21.

[0052] Further, the fourth gear 22 is fixedly connected with a first sleeve 221 on one side;

[0053] The first sleeve 221 is connected outside the first transmission shaft 21 through involute splines, ensuring that the first sleeve 221 can drive the first transmission shaft 21 to rotate when rotating;

[0054] The first sleeve 221 is provided with a first annular groove 222 outside, which is used to drive the fourth gear 22 to switch positions along the outside of the first transmission shaft.

[0055] Still further, the speed change unit 2 further comprises:

[0056] A first engaging sleeve 26 is rotationally sleeved outside the second annular groove 242;

[0057] The second engaging sleeve 27 is rotatably sleeved outside the first annular groove 222.

[0058] The shift shaft 28 is slidably inserted into the inside of the drive axle housing 100, and one end of the first engaging sleeve 26 and the second engaging sleeve are fixedly sleeved outside the shift shaft 28.

[0059] The fifth gear 23 is fixedly sleeved outside the first transmission shaft 21 and located between the fourth gear 22 and the sixth gear 24.

[0060] The inside of the shift shaft 28 is provided with a plurality of groups of pin holes 281 at equal intervals at the inner wall of the drive axle housing 100.

[0061] The interlocking pin 29 is slidably inserted into the corresponding position of the inner wall of the drive axle housing 100 and the pin hole 281, and is used for locking the shift shaft 28 after the shift is completed.

[0062] As an improvement, the power output unit 3 is further included.

[0063] The power output unit 3 includes:

[0064] The second transmission shaft 31 is rotatably connected inside the drive axle housing 100, and one end of the second transmission shaft 31 is provided with a parking brake 311 for braking the harvester.

[0065] The eighth gear 32 and the ninth gear 33 are fixedly sleeved outside the second transmission shaft 31 in sequence, and the eighth gear 32 is engaged with the fifth gear 23.

[0066] Further, the power output unit 3 further includes:

[0067] The third transmission shaft 35 is rotatably connected inside the drive axle housing 100, and both ends of the third transmission shaft 35 are connected with the tracks on both sides of the harvester, respectively, for driving the tracks of the harvester to advance, and the third transmission shaft 35 is provided with a running brake 351 outside and close to the tracks, for cooperating with the parking brake 311 to brake the tracks.

[0068] The differential shaft 34 is provided outside the third transmission shaft 35, and the differential shaft 34 is engaged with the eighth gear 32 through a gear.

[0069] It should be noted that: the utility model in the specific implementation process, when the grain harvester climbing degree is larger, there is insufficient traction, through the shift soft axle 28 to adjust the first engaging sleeve 26 of drive axle assembly changes to the neutral position, so that the seventh gear 25 and third gear 14, sixth gear 24 and second gear 13 are in the separation state, simultaneously, the second engaging sleeve 27 will fourth gear 22 along the first transmission shaft 21 adjustment to with first gear 12 meshing, at this time, by inserting the interlocking pin 29 into the corresponding pin hole 281, so that the shift soft axle 28 will first engaging sleeve 26 and second engaging sleeve 27 interlock, subsequently, the input shaft 11 is driven by first gear 12 fourth gear 22 rotation, fourth gear 22 drives the first sleeve 221 rotation, the first sleeve 221 is driven by the tangential force between the involute spline and the first transmission shaft 21 first transmission shaft 21 rotation, first transmission shaft 21 drives the fifth gear 23 rotation, the fifth gear 23 is driven by the ninth gear 33 second transmission shaft 31 rotation, second transmission shaft 31 is driven by the eighth gear 32 differential shaft 34 rotation, drive the whole vehicle drive climbing;

[0070] When the harvester needs to advance at medium speed during harvesting operation, the shift soft axle 28 is used to adjust the first engaging sleeve 26 of the drive axle assembly to change the sixth gear 24 to mesh with the second gear 13, and the seventh gear 25 is separated from the third gear 14, and the second engaging sleeve 27 adjusts the fourth gear 22 to be separated from the first gear 12, at this time, the first engaging sleeve 26 and the second engaging sleeve 27 are interlocked by the interlocking pin 29, subsequently, the input shaft 11 is driven by the second gear 13 sixth gear 24 rotation, sixth gear 24 drives the second sleeve 241 rotation, the second sleeve 241 is driven by the tangential force between the involute spline and the first transmission shaft 21 first transmission shaft 21 rotation, first transmission shaft 21 drives the fifth gear 23 rotation, the fifth gear 23 is driven by the ninth gear 33 second transmission shaft 31 rotation, second transmission shaft 31 is driven by the eighth gear 32 differential shaft 34 rotation, drive the whole vehicle to carry out harvesting operation at medium speed;

[0071] When the grain harvester needs to walk at high speed, the first engaging sleeve 26 of the drive axle assembly is adjusted by the shift soft shaft 28 to change the seventh gear 25 to mesh with the third gear 14, the sixth gear 24 is disengaged from the second gear 13, the second engaging sleeve 27 is adjusted to the neutral position, so that the fourth gear 22 is disengaged from the first gear 12, at this time, the first engaging sleeve 26 and the second engaging sleeve 27 are interlocked by the interlocking pin 29, then the input shaft 11 drives the seventh gear 25 to rotate through the third gear 14, the seventh gear 25 drives the second sleeve 241 to rotate, the second sleeve 241 drives the first transmission shaft 21 to rotate through the tangential force between the involute spline and the first transmission shaft 21, the first transmission shaft 21 drives the fifth gear 23 to rotate, the fifth gear 23 drives the second transmission shaft 31 to rotate through the ninth gear 33, the second transmission shaft 31 drives the differential shaft 34 to rotate through the eighth gear 32, and the whole vehicle is driven to work at high speed, greatly improving the efficiency of the field conversion operation.

[0072] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0073] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A high speed high driving force hydraulic drive axle assembly for a harvester comprising a drive axle housing (100) characterized by, Also include: Power input unit (1), including rotating in the drive axle housing (100) for input power input shaft (11), set in the input shaft (11) outside and the outer diameter of the first gear (12), second gear (13), third gear (14) in turn; Speed unit (2), including rotating in the drive axle housing (100) for transmission power first transmission shaft (21), rotating in turn in the first transmission shaft (21) outside for the first gear (12), second gear (13), third gear (14) meshing fourth gear (22), fifth gear (23), sixth gear (24); The outer diameter of the fourth gear (22), the sixth gear (24), the seventh gear (25) decreases in turn, used for switching the gear of the grain harvester.

2. The high-speed high-drive hydraulic drive axle assembly for the harvester according to claim 1, wherein: The sixth gear (24) is fixedly connected with a second sleeve (241) on one side of the seventh gear (25), and one end of the second sleeve (241) is fixedly connected with the seventh gear (25) relative to the sixth gear (24); The second sleeve (241) is connected outside the first transmission shaft (21) through involute spline; The second sleeve (241) is provided with a second annular groove (242) outside, used for driving the sixth gear (24) and the seventh gear (25) to switch positions along the outside of the first transmission shaft (21).

3. The high-speed high-drive hydraulic drive axle assembly for the harvester according to claim 2, wherein: The fourth gear (22) is fixedly connected with a first sleeve (221) on one side; The first sleeve (221) is connected outside the first transmission shaft (21) through involute spline; The first sleeve (221) is provided with a first annular groove (222) outside, used for driving the fourth gear (22) to switch positions along the outside of the first transmission shaft.

4. The high-speed high-drive hydraulic drive axle assembly for the harvester according to claim 3, wherein: The speed unit (2) further comprises: A first engaging sleeve (26) rotatably sleeved outside the second annular groove (242); A second engaging sleeve (27) rotatably sleeved outside the first annular groove (222); A shift soft shaft (28) slidingly inserted into the inside of the drive axle housing (100), and one end of the first engaging sleeve (26) and the second engaging sleeve is fixedly sleeved outside the shift soft shaft (28); A fifth gear (23) fixedly sleeved outside the first transmission shaft (21) and located between the fourth gear (22) and the sixth gear (24).

5. The high-speed high-drive hydraulic drive axle assembly for the harvester according to claim 4, wherein: Multiple groups of pin holes (281) are equidistantly arranged inside the drive axle housing (100) at the inner wall of the shift soft shaft (28); An interlocking pin (29) is slidingly inserted into the corresponding position between the inner wall of the drive axle housing (100) and the pin hole (281), and is used to lock the shift shaft (28) after the gear shifting is completed. 6.The high-speed and high-power hydraulic drive axle assembly for a harvester according to claim 4, characterized in that: The power output unit (3) is further provided with: The power output unit (3) is further provided with: The second transmission shaft (31) is rotatably connected inside the drive axle housing (100); The eighth gear (32) and the ninth gear (33) are fixedly arranged outside the second transmission shaft (31) in sequence, and the eighth gear (32) is engaged with the fifth gear (23). 7.The high-speed and high-power hydraulic drive axle assembly for a harvester according to claim 6, characterized in that: The power output unit (3) is further provided with: The third transmission shaft (35) is rotatably connected inside the drive axle housing (100), and the two ends of the third transmission shaft (35) are connected with the tracks on both sides of the harvester, so as to drive the tracks of the harvester to move forward; The differential shaft (34) is arranged outside the third transmission shaft (35), and the differential shaft (34) is engaged with the eighth gear (32) through a gear.

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