Engineering machinery gearbox and gear shifting method thereof

Abstract

The invention discloses an engineering machinery gearbox and a gear shifting method thereof, and belongs to the technical field of engineering machinery gearboxes. Comprising a gearbox body, and an input shaft, a plurality of transmission shafts and an output shaft which are sequentially in transmission connection are arranged in the gearbox body. The input shaft and the transmission shaft are each provided with a fixed gear, a clutch and a hub body gear. Power is transmitted between the input shaft and the transmission shafts and between the transmission shafts through fixed gears or hub body gears, fixed gears are arranged on the output shaft, and power is transmitted between the transmission shafts and the output shaft through the fixed gears. Multi-path and multi-transmission-ratio transmission of power is achieved, a plurality of gearbox gears can be achieved by using few transmission shafts, therefore, the gear requirements of different engineering machines are met, and the economical efficiency and adaptability of the gearbox are remarkably improved.

Description

Technical Field

[0001] The present application relates to the technical field of engineering machinery gearboxes, and in particular to an engineering machinery gearbox and a gear shifting method thereof. Background Art

[0002] In the field of construction machinery, the gearbox is the core component of the transmission system, and its performance directly determines the operating efficiency, fuel economy and operating comfort of the machinery. Traditional construction machinery gearboxes mostly adopt a multi-gear design to adapt to the power requirements under different working conditions. For example, loaders are usually equipped with 4 forward gears to meet their different power requirements during loading, transportation and unloading; while graders basically use 6 forward gears to ensure that the speed and traction can be accurately controlled when leveling the ground.

[0003] However, this gearbox designed for specific engineering machinery has limitations. First, each gearbox can only meet the needs of one or a few types of engineering machinery, resulting in high development costs and waste of resources. Once a new type of engineering machinery or working condition requires it, it is often necessary to redesign and develop a new gearbox, which not only increases the development cycle and cost, but also limits the versatility and scalability of gearbox technology. Summary of the invention

[0004] The purpose of the present application is to provide an engineering machinery gearbox and a shifting method thereof, so as to solve the problem that the engineering machinery gearbox in the prior art has poor adaptability and cannot meet the needs of a variety of engineering machinery.

[0005] In order to solve the above technical problems, this application is implemented by adopting the following technical solutions:

[0006] On the one hand, the present application provides an engineering machinery gearbox, including a gearbox body, in which an input shaft, multiple transmission shafts and an output shaft that are sequentially connected in transmission are provided; wherein, the input shaft and the transmission shaft are both provided with fixed gears, clutches and hub gears; power is transmitted between the input shaft and the transmission shaft and between the multiple transmission shafts via fixed gears or hub gears, the output shaft is provided with a fixed gear, and power is transmitted between the transmission shaft and the output shaft via fixed gears.

[0007] This solution realizes the transmission of power between the input shaft, the transmission shaft and the output shaft. Through the meshing relationship between each fixed gear and the hub gear, the power transmission path is more flexible and rich. In addition, this solution can also support the adjustment of the transmission ratio of the transmission path by regulating the engagement and disengagement status of each clutch, so that power can be transmitted between the shaft and the hub gear. In combination with the above, this solution realizes the transmission of power in multiple paths and multiple transmission ratios. Multiple gearbox gears can be achieved using fewer transmission shafts, thereby meeting the gear requirements of different construction machinery and significantly improving the economy and adaptability of the gearbox.

[0008] Optionally, the fixed gear includes at least one of a shaft gear and a clutch gear, and power is transmitted between the input shaft, the transmission shaft, and multiple transmission shafts through a hub gear, a clutch gear, or a shaft gear. By combining the clutch gear and the shaft gear, the power transmission path between the shafts can be made more flexible. In addition, different gear ratio values can be achieved by adjusting the number of teeth of the clutch gear.

[0009] Optionally, there are three transmission shafts, specifically, a first transmission shaft, a second transmission shaft, and a third transmission shaft that are sequentially connected in a transmission manner.

[0010] Optionally, a first shaft gear, a high-speed clutch, and a first hub gear are provided on the input shaft.

[0011] A forward clutch, a first clutch gear, a second shaft gear, and a second hub gear are provided on the first transmission shaft. The second hub gear meshes with the first shaft gear, and the second shaft gear meshes with the first hub gear.

[0012] In this solution, by controlling the engagement of the high-speed clutch, power transmission can be achieved between the input shaft and the first transmission shaft through the transmission of the first hub gear and the second shaft gear; by controlling the engagement of the forward clutch, power transmission can be achieved between the input shaft and the first transmission shaft through the transmission of the first shaft gear and the second hub gear; the two transmission paths can achieve different transmission ratio transmissions between the input shaft and the first transmission shaft. It should be noted that the high-speed clutch and the forward clutch cannot be engaged simultaneously in this solution.

[0013] Optionally, a second clutch gear, a second-gear clutch, a third shaft gear, and a third hub gear are provided on the second transmission shaft. The first clutch gear meshes with the second clutch gear.

[0014] In this solution, the power transmission between the first transmission shaft and the second transmission shaft is achieved through the first clutch gear and the second clutch gear.

[0015] Optionally, a third-fourth gear clutch, a third clutch gear, a first-gear clutch, a fourth shaft gear, a fourth hub gear, and a fifth hub gear are provided on the third transmission shaft. The fourth hub gear meshes with the second clutch gear, the third clutch gear meshes with the fourth hub gear, and the fifth hub gear meshes with the third shaft gear.

[0016] In this solution, the second transmission shaft and the third transmission shaft can transmit power through three transmission paths. Specifically, it can be known from the above content that the power of the first transmission shaft will be transmitted to the second clutch gear. When the second gear clutch is engaged, the third and fourth gear clutches are disengaged, and the first gear clutch is disengaged, the power on the second clutch gear will be transmitted to the third clutch gear through the third hub gear; when the second gear clutch is disengaged, the third and fourth gear clutches are engaged, and the first gear clutch is disengaged, the power is transmitted to the fourth hub gear through the second clutch gear; and when the clutch is disengaged, the third and fourth clutches are disengaged, and the first gear clutch is engaged, the power is transmitted to the fifth hub gear through the third shaft gear. It should be noted that the third and fourth clutches and the first gear clutch cannot be engaged simultaneously.

[0017] Optionally, an output shaft gear is provided on the output shaft, and the output shaft gear meshes with the fourth shaft gear. In this solution, the third transmission shaft and the output transmission shaft achieve power transmission through the fourth shaft gear and the output shaft gear.

[0018] Combined with the above content, this solution can achieve power transmission through 6 different paths by adjusting the engagement and disengagement states of each clutch and using the dynamic meshing relationship between the clutch gears, drive wheels and shaft gears, so as to flexibly realize the diversified transmission ratio configuration of power transmission between each transmission shaft. Adjusting the power transmission path according to actual needs can meet the gear requirements of a variety of construction machinery gearboxes, thus significantly improving the adaptability of the gearbox.

[0019] Optionally, a reverse gear clutch and a sixth hub gear engaged with the reverse gear clutch are provided on the second transmission shaft, and the sixth hub gear meshes with the second hub gear.

[0020] In this solution, by combining the reverse clutch with the second gear clutch, the third and fourth gear clutches, and the first gear clutch respectively, up to 3 reverse gears can be obtained. In the solution, the power of the input shaft is transmitted to the reverse gear clutch through the input shaft - second hub gear - sixth hub gear, and then the power is finally transmitted to the output shaft through the second gear clutch or the third and fourth gear clutches or the first gear clutch.

[0021] On the other hand, the present application provides a shifting method for a construction machinery gearbox, including a forward gear shifting method, which is as follows:

[0022] Engage the forward clutch and engage the first gear clutch;

[0023] Or engage the high-speed clutch and engage the first gear clutch;

[0024] Or engage the forward clutch and engage the second gear clutch;

[0025] Or engage the high-speed clutch and engage the second gear clutch;

[0026] Or engage the forward clutch and engage the third and fourth gear clutches;

[0027] Or engage the high-speed clutch and engage the third and fourth gear clutches.

[0028] This solution includes 6 forward gears, specifically,

[0029] First forward gear: Engage the forward clutch and the first gear clutch. The power transmission path is: power is transmitted to the input shaft - the first shaft gear - the second hub gear - the forward clutch - the first clutch gear - the second clutch gear - the third shaft gear - the fifth hub gear - the first gear clutch - the fourth shaft gear - the output shaft gear - the output shaft.

[0030] Second forward gear: Engage the high-speed clutch and engage the first gear clutch. The power transmission path is: power is transmitted to the input shaft - the high-speed clutch - the first hub gear - the second shaft gear - the first transmission shaft - the first clutch gear - the second clutch gear - the third shaft gear - the fifth hub gear - the first gear clutch - the fourth shaft gear - the output shaft gear - the output shaft.

[0031] Third forward gear: Engage the forward clutch and engage the second gear clutch. The power transmission path is: power is transmitted to the input shaft - the first shaft gear - the second hub gear - the forward clutch - the first clutch gear - the second clutch gear - the second gear clutch - the third hub gear - the third clutch gear - the third transmission shaft - the fourth shaft gear - the fifth hub gear - the output shaft.

[0032] Fourth forward gear: Engage the high-speed clutch and engage the second gear clutch. The power transmission path is: power is transmitted to the input shaft - the high-speed clutch - the first hub gear - the second shaft gear - the first transmission shaft - the first clutch gear - the second clutch gear - the second gear clutch - the third hub gear - the third clutch gear - the third transmission shaft - the fourth shaft gear - the fifth hub gear - the output shaft.

[0033] Fifth forward gear: Engage the forward clutch and engage the third and fourth gear clutches. The power transmission path is: power is transmitted to the input shaft - the first shaft gear - the second hub gear - the forward clutch - the first clutch gear - the second clutch gear - the fourth hub gear - the third and fourth gear clutch - the third transmission shaft - the fourth shaft gear - the output shaft gear - the output shaft.

[0034] Sixth forward gear: Engage the high-speed clutch and engage the third and fourth gear clutches. The power transmission path is: power is transmitted to the input shaft - the high-speed clutch - the first hub gear - the second shaft gear - the first transmission shaft - the first clutch gear - the second clutch gear - the fourth hub gear - the third and fourth gear clutch - the third transmission shaft - the fourth shaft gear - the output shaft gear - the output shaft.

[0035] It should be noted that the first to sixth forward gears in this solution are only used as a sequence, and in actual applications, the gear positions can be changed by replacing the order according to the transmission ratios of each clutch and other conditions.

[0036] Optionally, it also includes a reverse gear shifting method, which is as follows:

[0037] Engage the reverse clutch and engage the first gear clutch;

[0038] Or engage the reverse clutch and engage the second gear clutch;

[0039] Or engage the reverse clutch and engage the third and fourth gear clutches.

[0040] This solution includes 3 reverse gears, specifically:

[0041] Reverse first gear: Engage the reverse clutch and engage the first gear clutch. The power transmission path is: power is transmitted to the input shaft - first shaft gear - second hub gear - sixth hub gear - reverse gear clutch - second drive shaft - third shaft gear - fifth hub gear - first gear clutch - third drive shaft - fourth shaft gear - output shaft gear - output shaft.

[0042] Reverse second gear: Engage the reverse clutch and engage the second gear clutch. The power transmission path is: power is transmitted to the input shaft - first shaft gear - second hub gear - sixth hub gear - reverse gear clutch - second drive shaft - second gear clutch - third hub gear - third clutch gear - third drive shaft - fourth shaft gear - output shaft gear - output shaft.

[0043] Reverse third gear: Engage the reverse clutch and engage the third and fourth gear clutches. The power transmission path is: power is transmitted to the input shaft - first shaft gear - second hub gear - sixth hub gear - reverse gear clutch - second clutch gear - fourth hub gear - third and fourth gear clutch - third drive shaft - fourth shaft gear - output shaft gear - output shaft.

[0044] Compared with the prior art, the beneficial effects achieved by this application are as follows: The present invention realizes the transmission of power between the input shaft, the drive shaft, and the output shaft. Through the meshing relationship between each fixed gear and the hub gear, the power transmission path is made more flexible and rich. In addition, the present invention can also support the adjustment of the transmission ratio of the transmission path by controlling the engagement and separation states of each clutch, so that power can be transmitted between the shaft and the hub gear. Combining the above, the present invention realizes the multi-path and multi-transmission ratio transmission of power, and can realize multiple gear positions of the gearbox with fewer drive shafts, thereby meeting the gear position requirements of different construction machinery and significantly improving the economy and adaptability of the gearbox. Brief Description of the Drawings

[0045] To more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0046] Figure 1 It is a schematic diagram of the overall structure of some embodiments provided by this application.

[0047] Description of reference numerals: 1 - input shaft; 2 - first transmission shaft; 3 - second transmission shaft; 4 - third transmission shaft; 5 - output shaft; 11 - first shaft gear; 12 - high-speed clutch; 13 - first hub body gear; 21 - forward clutch; 22 - first clutch gear; 23 - second shaft gear; 24 - second hub body gear; 31 - second clutch gear; 32 - second gear clutch; 33 - third shaft gear; 34 - third hub body gear; 35 - reverse gear clutch; 36 - sixth hub body gear; 41 - third and fourth gear clutch; 42 - fourth hub body gear; 43 - third clutch gear; 44 - first gear clutch; 45 - fifth hub body gear; 46 - fourth shaft gear; 51 - output shaft gear. Detailed implementation manners

[0048] The following will clearly and completely describe the technical solutions in the embodiments of this application in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of the present disclosure / this application, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way limits this application and its application or use.

[0049] Embodiment 1

[0050] This embodiment introduces a construction machinery transmission. Referring to Figure 1 , the construction machinery transmission in this embodiment includes a transmission housing. An input shaft, a plurality of transmission shafts, and an output shaft are sequentially arranged in the transmission housing and are in driving connection. Among them, fixed gears, clutches, and hub body gears are provided on both the input shaft and the transmission shafts. The external spline of the hub body gear is connected to the internal spline of the clutch driven plate, and the power transmission between the clutch and the hub body gear can be realized by engaging the clutch. In this embodiment, the power is transmitted between the input shaft and the transmission shafts and between the plurality of transmission shafts through the hub body gears or shaft gears. Further, a fixed gear is provided on the output shaft, and the power is transmitted between the transmission shaft and the output shaft through the fixed gear. Further, in this embodiment, the fixed gear includes at least one of the shaft gear and the clutch gear. Through the combination of the hub body gear, the clutch gear, and the shaft gear, the power transmission path between the shafts can be made more flexible. In addition, by adjusting the number of teeth of the clutch gear, different gear speed ratios can be achieved.

[0051] This embodiment realizes the transmission of power among the input shaft, the transmission shaft, and the output shaft. Through the meshing relationship between each fixed gear and the hub gear, the power transmission path becomes more flexible and diverse. In addition, it can also support adjusting the transmission ratio of the transmission path by controlling the engagement and separation states of each clutch, enabling power to be transmitted between the shaft and the hub gear. Combining the above, this embodiment realizes the multi-path and multi-ratio transmission of power, and can achieve multiple gear positions of the gearbox with fewer transmission shafts, thus meeting the gear requirements of different construction machinery and significantly improving the economy and adaptability of the gearbox.

[0052] In this embodiment, there are three transmission shafts, specifically, the first transmission shaft 2, the second transmission shaft 3, and the third transmission shaft 4 that are sequentially connected for transmission. The input shaft 1 is provided with a first shaft gear 11, a high-speed clutch 12, and a first hub gear 13. Among them, the first transmission shaft 2 is provided with a forward clutch 21, a first clutch gear 22, a second shaft gear 23, and a second hub gear 24. The second hub gear 24 meshes with the first shaft gear 11, and the second shaft gear 23 meshes with the first hub gear 13. By controlling the engagement of the high-speed clutch 12, the input shaft 1 and the first transmission shaft 2 can achieve power transmission through the transmission between the first hub gear 13 and the second shaft gear 23; by controlling the engagement of the forward clutch 21, the input shaft 1 and the first transmission shaft 2 can achieve power transmission through the transmission between the first shaft gear 11 and the second hub gear 24. The two transmission paths can achieve different transmission ratios between the input shaft 1 and the first transmission shaft 2. It should be noted that in this solution, the high-speed clutch 12 and the forward clutch 21 cannot be engaged simultaneously.

[0053] Furthermore, the second transmission shaft 3 is provided with a second clutch gear 31, a second-gear clutch 32, a third shaft gear 33, and a third hub gear 34, and the first clutch gear 22 meshes with the second clutch gear 31.

[0054] The power transmission between the first transmission shaft 2 and the second transmission shaft 3 is realized through the first clutch gear 22 and the second clutch gear 31.

[0055] Furthermore, the third transmission shaft 4 is provided with a third-and-fourth-gear clutch 41, a third clutch gear 43, a first-gear clutch 44, a fourth shaft gear 46, a fourth hub gear 42, and a fifth hub gear 45. The fourth hub gear 42 meshes with the second clutch gear 31, the third clutch gear 43 meshes with the fourth hub gear 42, and the fifth hub gear 45 meshes with the third shaft gear 33.

[0056] The second transmission shaft 3 and the third transmission shaft 4 can transmit power through three transmission paths. Specifically, it can be known from the above content that the power transmission of the first transmission shaft 2 will be transmitted to the second clutch gear 31. When the second gear clutch 32 is engaged, the third and fourth gear clutch 41 is disengaged, and the first gear clutch 44 is disengaged, the power on the second clutch gear 31 will be transmitted to the third clutch gear 43 through the third hub gear 34; when the second gear clutch 32 is disengaged, the third and fourth gear clutch 41 is engaged, and the first gear clutch 44 is disengaged, the power is transmitted from the second clutch gear 31 to the fourth hub gear 42; and when the clutch is disengaged, the third and fourth gear clutch 41 is disengaged, and the first gear clutch 44 is engaged, the power is transmitted through the third shaft gear 33 to the fifth hub gear 45. It should be noted that the third and fourth gear clutch and the first gear clutch 44 cannot be engaged simultaneously.

[0057] In this embodiment, an output shaft gear 51 is provided on the output shaft 5, and the output shaft gear 51 meshes with the fourth shaft gear 46. The power transmission between the third transmission shaft 4 and the output transmission shaft is realized through the fourth shaft gear 46 and the output shaft gear 51.

[0058] Combined with the above content, this solution can realize power transmission through up to 6 different paths by adjusting the engagement and disengagement states of each clutch and using the dynamic meshing relationship between the clutch gears, drive wheels and shaft gears, so as to flexibly realize the diversified transmission ratio configuration of power transmission between each transmission shaft. Adjusting the power transmission path according to actual needs can meet the gear requirements of various construction machinery gearboxes, thus significantly improving the adaptability of the gearbox.

[0059] In this embodiment, a reverse gear clutch 35 and a sixth hub gear 36 engaged with the reverse gear clutch 35 are provided on the second transmission shaft 3, and the sixth hub gear 36 meshes with the second hub gear 24.

[0060] By combining the reverse clutch with the second gear clutch 32, the third and fourth gear clutch 41, and the first gear clutch 44 respectively, up to 3 reverse gears can be obtained. In the solution, the power of the input shaft 1 is transmitted to the reverse gear clutch 35 through the input shaft 1 - the second hub gear 24 - the sixth hub gear 36, and finally the power is transmitted to the output shaft 5 through the second gear clutch 32 / the third and fourth gear clutch 41 / the first gear clutch 44.

[0061] Embodiment 2:

[0062] This embodiment introduces a shifting method for the construction machinery gearbox in Embodiment 1, refer to Figure 1 , including the forward gear shifting method. This embodiment includes up to 6 forward gears. Specifically,

[0063] First forward gear: Engage the forward clutch 21 and engage the first gear clutch 44;

[0064] Power transmission path: Engage the forward clutch 21 and the first gear clutch 44. The power transmission path is as follows: Power is transmitted to the input shaft 1 - the first shaft gear 11 - the second hub gear 2424 - the forward clutch 21 - the first clutch gear 22 - the second clutch gear 31 - the third shaft gear 33 - the fifth hub gear 4545 - the first gear clutch 44 - the fourth shaft gear 46 - the output shaft gear 51 - the output shaft 5.

[0065] Forward second gear: Engage the high-speed clutch 12 and engage the first gear clutch 44;

[0066] Power transmission path: Engage the high-speed clutch 12 and engage the first gear clutch 44. The power transmission path is as follows: Power is transmitted to the input shaft 1 - the high-speed clutch 12 - the first hub gear 1313 - the second shaft gear 23 - the first transmission shaft 2 - the first clutch gear 22 - the second clutch gear 31 - the third shaft gear 33 - the fifth hub gear 4545 - the first gear clutch 44 - the fourth shaft gear 46 - the output shaft gear 51 - the output shaft 5.

[0067] Forward third gear: Or engage the forward clutch 21 and engage the second gear clutch;

[0068] Power transmission path: Engage the forward clutch 21 and engage the second gear clutch. The power transmission path is as follows: Power is transmitted to the input shaft 1 - the first shaft gear 11 - the second hub gear 2424 - the forward clutch 21 - the first clutch gear 22 - the second clutch gear 31 - the second gear clutch 32 - the third hub gear 3434 - the third clutch gear 43 - the third transmission shaft 4 - the fourth shaft gear 46 - the fifth circumferential exposure - the output shaft 5.

[0069] Forward fourth gear: Or engage the high-speed clutch 12 and engage the second gear clutch 32;

[0070] Power transmission path: Engage the high-speed clutch 12 and engage the second gear clutch 32. The power transmission path is as follows: Power is transmitted to the input shaft 1 - the high-speed clutch 12 - the first hub gear 1313 - the second shaft gear 23 - the first transmission shaft 2 - the first clutch gear 22 - the second clutch gear 31 - the second gear clutch 32 - the third hub gear 3434 - the third clutch gear 43 - the third transmission shaft 4 - the fourth shaft gear 46 - the fifth circumferential exposure - the output shaft 5.

[0071] Forward fifth gear: Or engage the forward clutch 21 and engage the third and fourth gear clutch 41;

[0072] Power transmission path: Engage the forward clutch 21 and the third / fourth gear clutch 41. The power transmission path is as follows: power is transmitted to the input shaft 1 - the first shaft gear 11 - the second hub gear 2424 - the forward clutch 21 - the first clutch gear 22 - the second clutch gear 31 - the fourth hub gear 4242 - the third / fourth gear clutch 41 - the third transmission shaft 4 - the fourth shaft gear 46 - the output shaft gear 51 - the output shaft 5.

[0073] Forward sixth gear: Or engage the high-speed clutch 12 and the third / fourth gear clutch 41;

[0074] Power transmission path: Engage the high-speed clutch 12 and the third / fourth gear clutch 41. The power transmission path is as follows: power is transmitted to the input shaft 1 - the high-speed clutch 12 - the first hub gear 1313 - the second shaft gear 23 - the first transmission shaft 2 - the first clutch gear 22 - the second clutch gear 31 - the fourth hub gear 4242 - the third / fourth gear clutch 41 - the third transmission shaft 4 - the fourth shaft gear 46 - the output shaft gear 51 - the output shaft 5.

[0075] To achieve smooth gear shifting, this embodiment defaults to progressive gear shifting. However, it should be noted that this embodiment can directly shift from the first gear to the sixth gear, or four of the gears can be selected according to the requirements of a certain construction machinery. The forward first gear to the forward sixth gear in this solution are only used as serial numbers, and the number of gears to be used in actual applications can be combined and selected. And this embodiment does not limit the transmission ratios of each clutch, and the gears can be shifted in a different order according to the transmission ratio of each clutch.

[0076] Embodiment Three:

[0077] This embodiment introduces a gear shifting method for the construction machinery gearbox in Embodiment One. Refer to Figure 1 , including the reverse gear shifting method. This embodiment includes a maximum of 3 reverse gears, specifically,

[0078] Reverse first gear: Engage the reverse clutch and the first gear clutch 44;

[0079] Power transmission path: Engage the reverse clutch and the first gear clutch 44. The power transmission path is as follows: power is transmitted to the input shaft 1 - the first shaft gear 11 - the second hub gear 2424 - the sixth hub gear 3636 - the reverse gear clutch 35 - the second transmission shaft 3 - the third shaft gear 33 - the fifth hub gear 4545 - the first gear clutch 44 - the third transmission shaft 4 - the fourth shaft gear 46 - the output shaft gear 51 - the output shaft 5.

[0080] Reverse second gear: Engage the reverse clutch and the second gear clutch 32;

[0081] Power transmission path: Engage the reverse clutch and engage the second gear clutch 32. The power transmission path is as follows: Power is transmitted to the input shaft 1 - the first shaft gear 11 - the second hub gear 2424 - the sixth hub gear 3636 - the reverse gear clutch 35 - the second transmission shaft 3 - the second gear clutch 32 - the third hub gear 3434 - the third clutch gear 43 - the third transmission shaft 4 - the fourth shaft gear 46 - the output shaft gear 51 - the output shaft 5.

[0082] Reverse third gear: Engage the reverse clutch and engage the third and fourth gear clutch 41;

[0083] Power transmission path: Engage the reverse clutch and engage the third and fourth gear clutch 41. The power transmission path is as follows: Power is transmitted to the input shaft 1 - the first shaft gear 11 - the second hub gear 2424 - the sixth hub gear 3636 - the reverse gear clutch 35 - the second clutch gear 31 - the fourth hub gear 4242 - the third and fourth gear clutch 41 - the third transmission shaft 4 - the fourth shaft gear 46 - the output shaft gear 51 - the output shaft 5.

[0084] It should be noted that the reverse first gear to reverse third gear in this embodiment are only used as sequence numbers, and the number of gear positions to be used in actual applications can be selected in combination. And this embodiment does not limit the transmission ratios of each clutch, and the gear positions can be changed by replacing the order according to the transmission ratio of each clutch.

[0085] The above are only the preferred embodiments of the present application. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principles of the present disclosure / this application, several improvements and modifications can still be made, and these improvements and modifications should also be regarded as the protection scope of the present disclosure / this application.

Claims

1. A construction machinery transmission, comprising a transmission housing, characterized in that, The transmission body is provided with an input shaft (1), a plurality of transmission shafts, and an output shaft (5) that are sequentially drivingly connected; wherein, fixed gears, clutches, and hub gears are provided on both the input shaft (1) and the transmission shafts; power is transmitted between the input shaft (1) and the transmission shafts, and between the plurality of transmission shafts, through the fixed gears or the hub gears, a fixed gear is provided on the output shaft (5), and power is transmitted between the transmission shaft and the output shaft (5) through the fixed gear.

2. The construction machinery transmission according to claim 1, wherein The fixed gear includes at least one of a shaft gear and a clutch gear, and power is transmitted between the input shaft (1) and the transmission shafts, and between the plurality of transmission shafts, through the hub gear, the clutch gear, or the shaft gear.

3. The construction machinery transmission according to claim 2, wherein There are three transmission shafts, specifically, a first transmission shaft (2), a second transmission shaft (3), and a third transmission shaft (4) that are sequentially drivingly connected.

4. The construction machinery gearbox according to claim 3, characterized in that A first shaft gear (11), a high-speed clutch (12), and a first hub gear (13) are provided on the input shaft (1); A forward clutch (21), a first clutch gear (22), a second shaft gear (23), and a second hub gear (24) are provided on the first transmission shaft (2), the second hub gear (24) meshes with the first shaft gear (11), and the second shaft gear (23) meshes with the first hub gear (13).

5. The construction machinery gearbox according to claim 4, characterized in that, A second clutch gear (31), a second-gear clutch (32), a third shaft gear (33), and a third hub gear (34) are provided on the second transmission shaft (3), and the first clutch gear (22) meshes with the second clutch gear (31).

6. The construction machinery transmission according to claim 5, wherein, A third-fourth gear clutch (41), a third clutch gear (43), a first-gear clutch (44), a fourth shaft gear (46), a fourth hub gear (42), and a fifth hub gear (45) are provided on the third transmission shaft (4), the fourth hub gear (42) meshes with the second clutch gear (31), the third clutch gear (43) meshes with the fourth hub gear (42), and the fifth hub gear (45) meshes with the third shaft gear (33).

7. The construction machinery transmission according to claim 6, wherein, An output shaft gear (51) is provided on the output shaft (5), and the output shaft gear (51) meshes with the fourth shaft gear (46).

8. The construction machinery transmission according to claim 7, wherein A reverse gear clutch (35) and a sixth hub gear (36) engaged with the reverse gear clutch (35) are provided on the second transmission shaft (3), and the sixth hub gear (36) meshes with the second hub gear (24).

9. A shifting method for a construction machinery gearbox according to any one of claims 1 to 7, characterized in that, It includes a forward gear shifting method, specifically as follows: Engage the forward clutch (21) and engage the first-gear clutch (44); Or engage the high-speed clutch (12) and engage the first-gear clutch (44); Or engage the forward clutch (21) and engage the second-gear clutch (32); Or engage the high-speed clutch (12) and engage the second-gear clutch (32); Or engage the forward clutch (21) and engage the third-fourth gear clutch (41); Or engage the high-speed clutch (12) and engage the third-fourth gear clutch (41).

10. A gear shifting method for a construction machinery gearbox according to claim 8, characterized in that, It includes a reverse gear shifting method, specifically as follows: Engage the reverse clutch and engage the first-gear clutch (44); Or engage the reverse clutch and engage the second gear clutch (32); Or engage the reverse clutch and engage the third and fourth gear clutch (41).

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