Six-speed full-hydraulic gear shifting gearbox

Abstract

A six-speed full-hydraulic gear shifting gearbox relates to the technical field of gearboxes and comprises a shell, a gear set for connecting a first input shaft, a second input shaft, a third input shaft, a fourth input shaft and a fifth input shaft is arranged in the shell, an eighth shell is arranged on the second input shaft, a third shell is arranged on the third input shaft, the third shell is meshed with the eighth shell, a sixth shell is arranged on the fourth input shaft, and the third shell is meshed with the sixth shell. The utility model solves the problems in the prior art that the efficiency is low due to the fact that the loader and the excavator must stop and shift gears when shifting the working gear and the walking gear, the unfamiliar driver can not engage or damage the gear when shifting the high-speed gear during walking, the traction force from the stop state to the high-speed gear is low, the starting is difficult, the three shift levers are complicated to operate, and the cost is high. The occupied space of a cab is large, the oil consumption is increased, and the power of an engine is lost.

Description

Technical Field

[0001] The utility model relates to the technical field of gearboxes, in particular to a six-speed full hydraulic shift gearbox. Background Art

[0002] Existing construction machinery such as loaders and excavators need to use a speed change device to achieve the output of their main power when their engines are working. The current shift transmission uses the first and second gears. When changing to the third and fourth gears, the mechanical sliding mechanism must stop and shift gears to achieve the conversion between the working gear and the traveling gear. It is connected to the front and rear wheel bridges of the loader and excavator through flanges and drive shafts to achieve four-wheel drive (four-wheel drive).

[0003] As the existing devices are used, the shortcomings of the technology are gradually exposed, mainly in the following aspects:

[0004] Loaders and excavators must stop and change gears when switching between working gear and traveling gear, which causes low efficiency. Unfamiliar drivers may be unable to shift into high gear or the gears may be damaged when changing to high gear while traveling. The low traction makes starting from a parking state to a high gear difficult. The three shift levers are complicated to operate, and the cab space is large, and it causes increased fuel consumption and engine power loss.

[0005] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0006] In view of the defects in the prior art, the utility model provides a six-speed fully hydraulic shift transmission to solve the problems in traditional technology that loaders and excavators must stop and shift gears when switching between working gears and traveling gears, resulting in low efficiency, unfamiliar drivers shifting to high gears while traveling will cause the gears to be unable to be engaged or to be damaged, and it is difficult to start from a parking state to a high gear due to low traction, the three shift levers are complicated to operate, the cab space is large, and it causes increased fuel consumption and engine power loss.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A six-speed fully hydraulic shift gearbox comprises a housing, wherein a gear set is arranged inside the housing, which connects input shaft one, shaft two, shaft three, shaft four and shaft five; housing eight is arranged on shaft two, housing three is arranged on shaft three, housing three is meshed with housing eight, housing six is ​​arranged on shaft four, housing three is meshed with housing six.

[0009] As an optimized solution, the input shaft 1 is connected with an input flange and an input gear 1.

[0010] As an optimized solution, the shaft 2 is connected with a gear 9 and a disc hub 2, and the input gear 1 is meshed with the disc hub 2.

[0011] As an optimized solution, the shaft three is connected with gear ten, gear eleven and hub four, and the gear nine is meshed with the gear eleven.

[0012] As an optimized solution, the shaft four is connected with gear twelve and gear five, and the gear ten is meshed with the gear twelve.

[0013] As an optimized solution, the shaft five is connected with gear seven and gear thirteen, the two ends of the shaft five are respectively connected with output flange one and output flange two, the gear twelve is meshed with the gear thirteen, and the gear five is meshed with the gear seven.

[0014] As an optimized solution, a three-speed shift valve is also provided outside the housing.

[0015] As an optimized solution, a clutch 1 for clutching the hub 2 with the shell 8 is provided on the shaft 2, and a clutch 2 for clutching the gear 9 with the shell 8 is provided on the shaft 2.

[0016] As an optimized solution, a clutch three is provided on the shaft three for engaging and disengaging the hub four with the housing in three phases, and a clutch four is provided on the shaft three for engaging and disengaging the gear ten with the housing in three phases.

[0017] As an optimized solution, a clutch five is provided on the shaft four for coupling the gear five with the housing six.

[0018] As an optimized solution, a buffer throttling device is provided inside the three-speed shift valve.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] This solution has five built-in hydraulic shift clutches. When switching between forward and reverse gears, the hydraulic clutch oil circuit is controlled to be on and off, so that the forward and reverse gears can be switched between low-speed gear and high-speed gear. This solves the shortcomings of the traditional technology that the device must be stopped for shifting, the shifting shock is large, and the traction is low and it is difficult to start from the parking state to the high-speed gear.

[0021] Each gear is switched on and off by a three-speed shift valve to switch the clutch oil circuit of each gear, so as to realize the switching of the first gear, second gear, third gear, reverse gear and other gears. It occupies little space in the cab and can be arranged at will. There is also a buffer device to reduce the impact of the gear shifting process.

[0022] The transmission has a simple and compact structure, small size, soft transmission, and can achieve non-stop gear shifting. The direct low-speed gear and high-speed gear conversion has high efficiency and meets various working conditions. It occupies little space in the cab, achieves energy-saving and environmental protection requirements, improves economic benefits, has high power transmission efficiency, and reduces maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0024] Figure 1 It is a structural schematic diagram of the utility model;

[0025] Figure 2 for Figure 1 Middle AA section view;

[0026] Figure 3 It is a structural schematic diagram of the three-speed shift valve of the utility model;

[0027] Figure 4 for Figure 1 Schematic diagram of the structure from the right side.

[0028] In the figure: 1-housing; 2-box cover; 3-three-speed shift valve; 4-input gear one; 5-input flange; 6-input shaft one; 7-disc hub two; 8-housing three; 9-disc hub four; 10-gear five; 11-housing six; 12-gear seven; 13-output flange one; 14-housing eight; 15-shaft two; 16-gear nine; 17-gear ten; 18-shaft three; 19-gear eleven; 20-gear twelve; 21-shaft four; 22-output flange two; 23-shaft five; 24-gear thirteen. DETAILED DESCRIPTION

[0029] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0030] like Figures 1 to 4 As shown, a six-speed full hydraulic shift gearbox includes a housing 1, in which a gear set is provided to connect an input shaft 1 6, a shaft 2 15, a shaft 3 18, a shaft 4 21, and a shaft 5 23; a housing 8 14 is provided on the shaft 2 15, a housing 3 8 is provided on the shaft 3 18, and the housing 3 8 is meshed with the housing 8 14; a housing 6 11 is provided on the shaft 4 21, and the housing 3 8 is meshed with the housing 6 11; a case cover 2 is also fixedly mounted on the outside of the case body 1.

[0031] The input shaft 6 is connected to an input flange 5 and an input gear 4.

[0032] The shaft 2 15 is connected with the gear 9 16 and the disc hub 2 7 , and the input gear 1 4 is meshed with the disc hub 2 7 .

[0033] The shaft three 18 is connected with the gear ten 17, the gear eleven 19 and the hub four 9, and the gear nine 16 is meshed with the gear eleven 19.

[0034] The shaft four 21 is connected with the gear twelve 20 and the gear five 10, and the gear ten 17 is meshed with the gear twelve 20.

[0035] The shaft five 23 is connected to the gear seven 12 and the gear thirteen 24 , and the two ends of the shaft five 23 are respectively connected to the output flange one 13 and the output flange two 22 , the gear twelve 20 is meshed with the gear thirteen 24 , and the gear five 10 is meshed with the gear seven 12 .

[0036] A three-speed shift valve 3 is also provided outside the housing 1 .

[0037] A clutch 1 for engaging and disengaging the hub 2 7 and the housing 8 14 is provided on the shaft 2 15 , and a clutch 2 for engaging and disengaging the gear 9 16 and the housing 8 14 is provided on the shaft 2 15 .

[0038] A clutch three is provided on the shaft three 18 for engaging and disengaging the hub four 9 and the housing three 8, and a clutch four is provided on the shaft three 18 for engaging and disengaging the gear ten 17 and the housing three 8.

[0039] A clutch 5 is provided on the shaft 4 21 for coupling and disengaging the gear 5 10 and the housing 6 11 .

[0040] A buffer throttling device is arranged inside the three-speed shift valve 3, which can reduce the impact of the shifting process, especially the forward and reverse movement, and improve driving comfort.

[0041] The working principle of this device is:

[0042] The vehicle has three gears for forward movement: Ⅰ, Ⅱ, Ⅲ, and three gears for reverse movement: Ⅰ, Ⅱ, Ⅲ. The shift valve is used to switch the oil circuit on and off to meet various working conditions.

[0043] Forward I transmission route: input gear 1 4 meshes with disk hub 2 7, clutch 1 friction plate engages and transmits to housing 8 14, clutch 2 friction plate engages gear 9 16, gear 9 16 meshes with gear 11 19, gear 10 17 meshes with gear 12 20, gear 12 20 meshes with gear 13 24, gear 13 24 drives shaft 5 23 to drive output flange 13 and output flange 22;

[0044] Forward transmission route 2: input gear 1 4 meshes with disk hub 2 7, clutch 1 friction plate engages and transmits to housing 8 14, housing 8 14 meshes with housing 3 8, clutch 4 friction plate engages gear 10 17, gear 10 17 meshes with gear 12 20, gear 12 20 meshes with gear 13 24, gear 13 24 drives shaft 5 23 to drive output flange 13 and output flange 22;

[0045] Forward three transmission route: input gear one 4 meshes with disk hub two 7, clutch one friction plate engages and transmits to housing eight 14, housing eight 14 meshes with housing three 8, housing three 8 meshes with housing six 11, clutch five friction plate engages gear five 10, gear five 10 meshes with gear seven 12, gear seven 12 drives shaft five 23 to drive output flange 13 and output flange 22;

[0046] Reverse I transmission route: input gear 1 4 meshes with disk hub 4 9, clutch 3 friction plate engages and transmits to housing 3 8, housing 3 8 meshes with housing 8 14, clutch 2 friction plate engages gear 9 16, gear 9 16 meshes with gear 11 19, gear 10 17 meshes with gear 12 20, gear 12 20 meshes with gear 13 24, gear 13 24 drives shaft 5 23 to drive output flange 13 and output flange 22; Reverse II transmission route: input gear 1 4 meshes with disk hub 4 9, clutch 3 friction plate engages and transmits to housing 3 8, clutch 4 friction plate engages gear 10 17, gear 10 17 meshes with gear 12 20, gear 12 20 meshes with gear 13 24, gear 13 24 drives shaft 5 23 to drive output flange 13 and output flange 22;

[0047] Reverse three transmission route: input gear one 4 meshes with disk hub four 9, clutch three friction plate engages and transmits to housing three 8, housing three 8 meshes with housing six 11, clutch five friction plate engages gear five 10, gear five 10 meshes with gear seven 12, gear seven 12 drives shaft five 23 to drive output flange 13 and output flange 22;

[0048] Three-speed shift valve 3: forward and reverse valve stems control clutch one on shaft two 15, clutch three on shaft three 18, transmission and disengagement to achieve forward and reverse gears; first gear, second gear, and third gear control clutch one on shaft two 15, clutch four on shaft three 18, and clutch five on shaft four 21, transmission and disengagement to achieve first gear, second gear, and third gear.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. Six-speed fully hydraulic shift gearbox, characterized by: The invention comprises a housing (1), wherein a gear set is arranged inside the housing (1) and connects an input shaft 1 (6), a shaft 2 (15), a shaft 3 (18), a shaft 4 (21), and a shaft 5 (23); a housing 8 (14) is arranged on the shaft 2 (15); a housing 3 (8) is arranged on the shaft 3 (18), and the housing 3 (8) meshes with the housing 8 (14); a housing 6 (11) is arranged on the shaft 4 (21), and the housing 3 (8) meshes with the housing 6 (11); The input shaft 1 (6) is connected with an input flange (5) and an input gear 1 (4). The shaft 2 (15) is connected with the gear 9 (16) and the disk hub 2 (7), and the input gear 1 (4) is meshed with the disk hub 2 (7). The shaft 2 (15) is provided with a clutch 1 for engaging and disengaging the hub 2 (7) and the housing 8 (14); the shaft 2 (15) is provided with a clutch 2 for engaging and disengaging the gear 9 (16) and the housing 8 (14); The shaft three (18) is provided with a clutch three for engaging and disengaging the hub four (9) and the housing three (8); the shaft three (18) is provided with a clutch four for engaging and disengaging the gear ten (17) and the housing three (8); The shaft four (21) is provided with a clutch five for engaging and disengaging the gear five (10) and the housing six (11).

2. The six-speed fully hydraulic shift transmission according to claim 1, characterized in that: The shaft three (18) is connected to the gear ten (17), the gear eleven (19) and the hub four (9), and the gear nine (16) is meshed with the gear eleven (19).

3. The six-speed fully hydraulic shift transmission according to claim 2, characterized in that: The shaft four (21) is connected with the gear twelve (20) and the gear five (10), and the gear ten (17) is meshed with the gear twelve (20).

4. The six-speed fully hydraulic shift transmission according to claim 3, characterized in that: The shaft five (23) is connected to the gear seven (12) and the gear thirteen (24), and the two ends of the shaft five (23) are respectively connected to the output flange one (13) and the output flange two (22), the gear twelve (20) is meshed with the gear thirteen (24), and the gear five (10) is meshed with the gear seven (12).

5. The six-speed fully hydraulic shift transmission according to claim 1, characterized in that: A three-speed shift valve (3) is also provided outside the housing (1).

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