Gearbox of electric loader

Abstract

The utility model provides a gearbox of an electric loader. The gearbox of the electric loader comprises a box body, a working transmission assembly and a walking transmission assembly, the working transmission assembly and the walking transmission assembly are arranged in the box body, the walking transmission assembly comprises a walking input shaft, a first clutch shaft, a second clutch shaft and a walking output shaft, the walking input shaft, the first clutch shaft and the second clutch shaft are sequentially arranged in the box body, and the walking output shaft is connected with the working transmission assembly. A first gear, a second gear and a third gear which are sequentially meshed are arranged on the first clutch shaft, the second clutch shaft and the walking output shaft respectively, a fourth gear, a fifth gear and a sixth gear which are sequentially meshed are arranged on the first clutch shaft, the second clutch shaft and the walking output shaft respectively, a first clutch is arranged between the second gear and the fourth gear of the first clutch shaft, and a second clutch is arranged between the fifth gear and the sixth gear of the second clutch shaft. And a second clutch is arranged between the third gear and the fifth gear of the second clutch shaft. According to the gearbox of the electric loader, the problem that the electric loader is not provided with a proper gearbox is solved.

Description

Technical Field

[0001] The utility model relates to the field of speed change devices, in particular to a gearbox for an electric loader. Background Art

[0002] Electrification is currently a hot topic for energy conservation and emission reduction in construction machinery. Electric motors offer a wider speed and torque range, but for economical and dynamic reasons, they still require a gearbox to expand the torque and speed range. In the early days of loader electrification, there were no dedicated gearbox assemblies for pure electric loaders. Due to the significant difference in traction between motors and engines, traditional multi-speed gearboxes cannot maximize the motor's performance, resulting in low motor efficiency and high energy consumption. The speed ratios do not meet the loader's traction performance and vehicle speed requirements, hindering motor selection. Furthermore, the mismatch with the motor results in poor shift comfort, slow shift response, high impact, and low reliability. Utility Model Content

[0003] In order to solve the problem that electric loaders do not have a suitable gearbox, the utility model provides an electric loader gearbox that solves the above problem.

[0004] A gearbox for an electric loader comprises a housing, a working transmission assembly and a travel transmission assembly arranged in the housing, the travel transmission assembly comprising a travel input shaft, a first clutch shaft, a second clutch shaft and a travel output shaft which are sequentially arranged in the housing, the travel input shaft, the first clutch shaft and the second clutch shaft are respectively provided with a first gear, a second gear and a third gear which are meshed in sequence, the first clutch shaft, the second clutch shaft and the travel output shaft are respectively provided with a fourth gear, a fifth gear and a sixth gear which are meshed in sequence, a first clutch is provided between the second gear and the fourth gear of the first clutch shaft, a second clutch is provided between the third gear and the fifth gear of the second clutch shaft, the travel input shaft passes through the outside of the housing and is connected to the travel input end, the travel output shaft passes through the outside of the housing and is connected to the travel output end.

[0005] In a preferred embodiment of the electric loader transmission provided by the present invention, the working transmission assembly includes a first working output shaft, a working input shaft, and a second working output shaft, which are sequentially disposed within the housing. The first working input shaft is connected to the working input end, and the first working output shaft and the second working output shaft are each connected to a working output end. The working input end is the working motor, the travel input end is the travel motor, and the working output end is the working oil pump.

[0006] In a preferred embodiment of the electric loader gearbox provided by the present invention, the first clutch and the second clutch are single-engagement mechanisms.

[0007] The three states include both clutches being disconnected, the first clutch being engaged and the second clutch being disconnected, and the first clutch being disconnected and the second clutch being engaged.

[0008] The first clutch and the second clutch are controlled by the same hydraulic mechanism, and the hydraulic mechanism drives the first clutch to engage or the second clutch to engage.

[0009] When the first clutch is engaged, the first gear, the second gear, the first clutch, the fourth gear, the fifth gear and the sixth gear are connected in sequence, and a speed ratio between the first gear and the sixth gear is 5 to 6.

[0010] When the second clutch is engaged, the first gear, the second gear, the third gear, the second clutch, the fifth gear and the sixth gear are sequentially connected, and a speed ratio between the first gear and the sixth gear is 1.5 to 2.

[0011] Compared with the prior art, the electric loader gearbox provided by the present invention has the following beneficial effects:

[0012] 1. The electric loader gearbox provided by the utility model integrates the working transmission component and the travel transmission component into the same box, and has a compact structure.

[0013] 2. The gearbox working system and traveling system of the electric loader provided by the present invention are driven by independent working motors and traveling motors respectively, without affecting each other.

[0014] 3. The working system of the electric loader gearbox provided by the utility model adopts a dual-interface structure, which can be connected to different working components respectively, and has strong expansion capability.

[0015] 4. The electric loader gearbox provided by the present invention includes two clutches and adopts a power shift structure, which can realize driving shifting with small shifting impact.

[0016] 5. The travel system of the electric loader gearbox provided by the present invention adopts a two-speed structure, including a low-speed gear and a high-speed gear, which is suitable for the speed and torque range of the electric motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the electric loader gearbox.

[0018] Numbers in the figure:

[0019] Box body 1, first working output shaft 2, working input shaft 3, second working output shaft 4, travel input shaft 5, first clutch shaft 6, second clutch shaft 7, travel output shaft 8;

[0020] A first gear 11, a second gear 12, a third gear 13, a fourth gear 14, a fifth gear 15, a sixth gear 16, a seventh gear 17, an eighth gear 18, and a ninth gear 19;

[0021] The first clutch 21 and the second clutch 22 ; the working motor 31 and the travel motor 32 . DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] See also Figure 1 , is a schematic structural diagram of the electric loader gearbox provided by the present invention, comprising a box body 1 and a working transmission assembly and a traveling transmission assembly arranged in the box body 1.

[0024] The travel transmission assembly includes a travel input shaft 5 , a first clutch shaft 6 , a second clutch shaft 7 and a travel output shaft 8 which are sequentially arranged in parallel in the housing 1 .

[0025] A first gear 11 , a second gear 12 and a third gear 13 that mesh in sequence are respectively provided on the left side of the travel input shaft 5 , the first clutch shaft 6 and the second clutch shaft 7 .

[0026] A fourth gear 14 , a fifth gear 15 and a sixth gear 16 are respectively provided on the right side of the first clutch shaft 6 , the second clutch shaft 7 and the travel output shaft 8 , which are meshed in sequence.

[0027] A first clutch 21 is provided at a middle position of the first clutch shaft 6 , and the first clutch 21 disconnects the power transmission between the second gear 12 and the fourth gear 14 .

[0028] A second clutch 22 is provided at a middle position of the second clutch shaft 7 , and the second clutch 22 disconnects the power transmission between the third gear 13 and the fifth gear 15 .

[0029] The left end of the travel input shaft 5 passes through the outside of the box body 1 and is connected to the power output shaft of the travel motor 32 located outside the box body 1. Both ends of the travel output shaft 8 pass through the outside of the box body 1 and are respectively connected to the travel mechanism on one side of the loader.

[0030] The transmission also includes a hydraulic mechanism that controls the operation of the first clutch 21 and the second clutch 22, pushing the pressure plate of the first clutch 21 or the second clutch 22 to engage, thereby achieving power shifting. This allows for three operating states: first clutch disengaged, second clutch disengaged; first clutch engaged, second clutch disengaged; and first clutch disengaged, second clutch engaged.

[0031] The hydraulic mechanism for controlling the clutch is a common technology in this field. After determining the working requirements of the hydraulic mechanism, technicians in this field can freely design it according to the working requirements. The specific details of the hydraulic mechanism will not be repeated here.

[0032] With the first clutch 21 engaged, the travel motor 32, first gear 11, second gear 12, first clutch 21, fourth gear 14, fifth gear 15, and sixth gear 16 are sequentially connected, representing low gear. The speed ratio of low gear is 5.54. Assuming the first gear 11 rotates at 6000 rpm, the sixth gear 16 rotates at 1084 rpm.

[0033] With the second clutch 22 engaged, the travel motor 32, first gear 11, second gear 12, third gear 13, second clutch 22, fifth gear 15, and sixth gear 16 are sequentially connected, representing high gear. The speed ratio of high gear is 1.84. Assuming the first gear 11 rotates at 6000 rpm, the sixth gear 16 rotates at 3254 rpm.

[0034] The working transmission assembly includes a first working output shaft 2 , a working input shaft 3 , and a second working output shaft 4 which are sequentially arranged in parallel in the housing 1 .

[0035] The first working output shaft 2, the working input shaft 3 and the second working output shaft 4 are respectively provided with an eighth gear 18, a seventh gear 17 and a ninth gear 19 which mesh in sequence. The seventh gear 17 reduces the speed of the output to the eighth gear 18 and the ninth gear 19.

[0036] The left end of the working input shaft 3 passes through the outside of the box body 1 and is connected to the power output shaft of the working motor 31 located outside the box body 1. The right ends of the first working output shaft 2 and the second working output shaft 4 both pass through the outside of the box body 1 and are connected to a working oil pump respectively.

[0037] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An electric loader gearbox, characterized in that: The gear train is a gear that is engaged with the gear of the control wheel and the control wheel, and the gear is connected with the gear of the control wheel to the control wheel. The gear train is a gear that is engaged with the gear of the control wheel and the control wheel. The gear train is a gear that is engaged with the gear of the control wheel and the control wheel. The gear train is a gear that is engaged with the gear of the control wheel and the control wheel.

2. The electric loader gearbox according to claim 1, characterized in that: The working transmission assembly includes a first working output shaft, a working input shaft and a second working output shaft which are sequentially arranged in the housing, and the three are respectively provided with an eighth gear, a seventh gear and a ninth gear which are meshed in sequence. The working input shaft is connected to the working input end, and the first working output shaft and the second working output shaft are respectively connected to a working output end.

3. The electric loader gearbox according to claim 2, characterized in that: The working input end is a working motor, the traveling input end is a traveling motor, and the working output end is a working oil pump.

4. The electric loader gearbox according to any one of claims 1 to 3, characterized in that: The first clutch and the second clutch are single-engagement mechanisms, including three states: both are disconnected; the first clutch is engaged and the second clutch is disconnected; and the first clutch is disconnected and the second clutch is engaged.

5. The electric loader gearbox according to claim 4, characterized in that: The first clutch and the second clutch are controlled by the same hydraulic mechanism, and the hydraulic mechanism drives the first clutch to engage or the second clutch to engage.

6. The electric loader gearbox according to claim 4, characterized in that: When the first clutch is engaged, the first gear, the second gear, the first clutch, the fourth gear, the fifth gear and the sixth gear are connected in sequence, and a speed ratio between the first gear and the sixth gear is 5 to 6.

7. The electric loader gearbox according to claim 4, characterized in that: When the second clutch is engaged, the first gear, the second gear, the third gear, the second clutch, the fifth gear and the sixth gear are sequentially connected, and a speed ratio between the first gear and the sixth gear is 1.5 to 2.

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