Electrically-driven two-gear gearbox

Abstract

An electrically-driven two-gear gearbox relates to the technical field of gearboxes and comprises a box body, a second shaft and a third shaft are rotatably arranged in the box body, a first gear and a sixth gear are parallelly arranged on the second shaft, a first clutch for engaging and disengaging the first gear and the sixth gear is further arranged on the second shaft, and a second gear and an eighth gear are arranged on the third shaft. The third shaft is further provided with a second clutch for separating and combining the second gear and the eighth gear. The utility model solves the problems of high oil consumption, much exhaust gas emission, economic and environmental protection loss, loud noise of the engine and the gearbox in the working process, low working efficiency and the like caused by the fact that the engine needs to be matched with the gearbox to realize various working conditions of the loader and the excavator in the traditional technology in different working and walking working conditions and cannot reach the highest efficiency. And the operation experience of an operator in a cab is poor.

Description

Technical Field

[0001] The utility model relates to the technical field of gearboxes, in particular to an electric-driven two-speed gearbox. Background Art

[0002] Existing construction machinery such as loaders, excavators, and backhoe loaders achieve different speeds under various working conditions through engine-driven gearboxes. The low-speed, high-torque engine operates at 1500 to 1800 rpm, and when traveling, the engine operates at 2200 to 2400 rpm to achieve high-speed travel.

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

[0004] When loaders and excavators are working and traveling in different conditions, the engine needs to cooperate with the gearbox to achieve multiple working conditions and cannot reach the highest efficiency, resulting in high fuel consumption, high exhaust emissions, and economic and environmental losses. The engine and gearbox make loud noises during the working process, and the operator has a poor operating experience in the cab.

[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 an electric drive two-speed gearbox to solve the problems in the traditional technology that loaders and excavators cannot achieve the highest efficiency in different working conditions when working and walking, and the engine needs to cooperate with the gearbox to achieve multiple working conditions, resulting in high fuel consumption, high exhaust gas emissions, economic and environmental losses, high noise from the engine and gearbox during the working process, and poor operating experience for the operator in the cab:

[0007] An electric-driven two-speed gearbox comprises a housing, wherein shaft 2 and shaft 3 are rotatably arranged in the housing, gear 1 and gear 6 are arranged in parallel on shaft 2, and clutch 1 for engaging and disengaging gear 1 and gear 6 is also arranged on shaft 2.

[0008] The shaft three is provided with a gear two and a gear eight, and the shaft three is also provided with a clutch two for engaging and disengaging the gear two and the gear eight.

[0009] As an optimized solution, a shaft 1 is rotatably provided in the box body, and a gear 5 is connected to the shaft 1.

[0010] As an optimized solution, a shaft four is rotatably provided in the box body, and a gear four is connected to the shaft four.

[0011] As an optimized solution, a gear three is also provided on the shaft three, and the gear three is meshed with the gear four.

[0012] As an optimized solution, a gear seven is also provided on the shaft two, and the gear seven is meshed with the gear five.

[0013] As an optimized solution, the gear five is meshed with the gear seven.

[0014] As an optimized solution, the gear one is meshed with the gear two.

[0015] As an optimized solution, the gear six is ​​meshed with the gear eight.

[0016] As an optimized solution, the two ends of the shaft four are correspondingly connected with output flange one and output flange two.

[0017] As an optimized solution, an electrically controlled shift valve for controlling the engagement or disengagement of clutch one and clutch two is also provided on the outside of the housing.

[0018] As an optimized solution, a brake, a pressure reducing valve and a rotation speed sensor are also provided outside the box.

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

[0020] The present invention has two built-in hydraulic shift clutches. When switching between low-speed gear and high-speed gear, the hydraulic clutch oil circuit is controlled to be on and off to achieve the switching between low-speed gear and high-speed gear, thus solving the disadvantages of the device in the traditional technology that the device must be stopped for shifting, the shifting shock is large, and the traction force 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 the electronically controlled shift valve to switch the clutch oil circuit of each gear, so as to realize the switching of the first gear, the second 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 shifting process.

[0022] The transmission has a simple and compact structure. The motor-driven gearbox achieves low noise, low impact, small size, soft transmission in various working conditions, and can shift gears without stopping. The direct low-speed gear and high-speed gear conversion has high efficiency to meet various working conditions, 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 Schematic diagram of the structure in the left viewing direction;

[0026] Figure 3 for Figure 1 AA section view.

[0027] In the figure: 1-housing; 2-shaft one; 3-gear one; 4-shaft two; 5-gear two; 6-gear three; 7-brake; 8-output flange one; 9-gear four; 10-housing cover; 11-gear five; 12-gear six; 13-gear seven; 14-shaft three; 15-gear eight; 16-shaft four; 17-output flange two; 18-pressure reducing valve; 19-electrically controlled shift valve; 20-speed sensor; 21-clutch one; 22-clutch two. DETAILED DESCRIPTION

[0028] 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.

[0029] like Figures 1 to 3 As shown, the electric drive two-speed gearbox includes a box body 1, a box cover 10 is provided on the box body, a shaft 2 4 and a shaft 3 14 are rotatably provided in the box body 1, a gear 1 3 and a gear 6 12 are arranged in parallel on the shaft 2 4, and a clutch 1 21 for engaging and disengaging the gear 1 3 and the gear 6 12 is also provided on the shaft 2 4.

[0030] The shaft three 14 is provided with a gear two 5 and a gear eight 15 , and the shaft three 14 is also provided with a clutch two 22 for coupling and disconnecting the gear two 5 and the gear eight 15 .

[0031] A shaft 2 is rotatably disposed in the box body 1, and a gear 5 11 is connected to the shaft 2.

[0032] A shaft 4 16 is also rotatably provided in the housing 1, and a gear 4 9 is connected to the shaft 4 16.

[0033] A gear three 6 is also provided on the shaft three 14, and the gear three 6 is meshed with the gear four 9.

[0034] A gear seven 13 is also provided on the shaft two 4, and the gear seven 13 is meshed with the gear five 11.

[0035] Gear five 11 meshes with gear seven 13.

[0036] Gear 1 3 meshes with gear 2 5.

[0037] Gear six 12 meshes with gear eight 15.

[0038] The two ends of shaft four 16 are correspondingly connected with output flange one 8 and output flange two 17.

[0039] An electrically controlled shift valve 19 for controlling the engagement or disengagement of clutch 1 21 and clutch 2 22 is also provided outside the housing 1 .

[0040] The electronically controlled shift valve 19 is provided with a buffer throttling device, which can reduce the shifting process, especially the low-speed and high-speed impact, and improve driving comfort.

[0041] The outside of the box body 1 is also provided with a pressure reducing valve 18 and a brake 7, and the brake 7 can realize parking brake.

[0042] The speed sensor 20 can achieve automatic switching by automatically changing the controller to high speed according to the output speed reaching the set data.

[0043] The working principle of this device is:

[0044] The gear position of the whole box is 1st gear and 2nd gear, and the electric control shift valve is used to switch the oil circuit to meet various working conditions.

[0045] The whole box can be set with two control modes, one is the electric control handle to control the electric control shift valve to control the clutch on and off, the other is to use the speed sensor 20 to send the signal through the control box to reach the shift speed and automatically convert the electrical signal to high speed to achieve automatic shifting

[0046] First gear transmission route: the motor drives shaft 1 2, shaft 1 2 drives gear 5 11, gear 5 11 meshes with gear 7 13, clutch 1 21 is combined and transmitted to gear 1 3 through the friction plate, gear 1 3 meshes with gear 2 5, gear 3 6 meshes with gear 4 9, gear 4 9 drives shaft 4 16 to drive output flange 1 8 and output flange 2 17;

[0047] Second gear transmission route: the motor drives shaft 1 2, shaft 1 2 drives gear 5 11, gear 5 11 meshes with gear 7 13, gear 6 12 meshes with gear 8 15, and is transmitted to gear 1 3 through the friction plate through clutch 2 22, gear 1 3 meshes with gear 2 5, gear 3 6 meshes with gear 4 9, gear 4 9 drives shaft 4 16 to drive output flange 1 8 and output flange 2 17.

[0048] 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. Electric drive two-speed gearbox, characterized by: The invention comprises a housing (1), wherein a second shaft (4) and a third shaft (14) are rotatably arranged in the housing (1), a first gear (3) and a sixth gear (12) are arranged in parallel on the second shaft (4), and a clutch (21) for engaging and disengaging the first gear (3) and the sixth gear (12) is also arranged on the second shaft (4). The shaft three (14) is provided with a gear two (5) and a gear eight (15), and the shaft three (14) is also provided with a clutch two (22) for engaging and disengaging the gear two (5) and the gear eight (15).

2. The electric drive two-speed gearbox according to claim 1, characterized in that: A shaft 1 (2) is also rotatably provided in the box body (1), and a gear 5 (11) is connected to the shaft 1 (2).

3. The electric drive two-speed gearbox according to claim 2, characterized in that: A fourth shaft (16) is also rotatably provided in the box body (1), and a fourth gear (9) is connected to the fourth shaft (16).

4. The electric drive two-speed gearbox according to claim 3, characterized in that: The shaft three (14) is also provided with a gear three (6), and the gear three (6) is meshed with the gear four (9).

5. The electric drive two-speed gearbox according to claim 4, characterized in that: The shaft 2 (4) is also provided with a gear 7 (13), and the gear 7 (13) is meshed with the gear 5 (11).

6. The electric drive two-speed gearbox according to claim 5, characterized in that: The gear five (11) is meshed with the gear seven (13).

7. The electric drive two-speed gearbox according to claim 6, characterized in that: The gear one (3) is meshed with the gear two (5).

8. The electric drive two-speed gearbox according to claim 7, characterized in that: The gear six (12) is meshed with the gear eight (15).

9. The electric drive two-speed gearbox according to claim 8, characterized in that: The two ends of the shaft four (16) are correspondingly connected with output flange one (8) and output flange two (17).

10. The electric drive two-speed gearbox according to claim 9, characterized in that: The housing (1) is also provided with an electrically controlled shift valve (19) for controlling the engagement or disengagement of clutch 1 (21) and clutch 2 (22) on the outside, and a brake (7), a pressure reducing valve (18) and a rotation speed sensor (20) on the outside of the housing (1).

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