阅读说明：本技术 一种液压差速器 (Hydraulic differential speed device ) 是由 陈金祥 于 2020-08-04 设计创作，主要内容包括：本发明涉及差速器技术领域,且公开了一种液压差速器,包括第一半轴齿轮、第二半轴齿轮和第一齿轮轴杆,所述第一齿轮轴杆的一端与所述第一半轴齿轮相连接,其另一端与所述第二半轴齿轮相连接,所述第一半轴齿轮和第二半轴齿轮用于在第一齿轮轴杆上转动。该液压差速器,第一齿轮轴杆的一端与所述第一半轴齿轮相连接,其另一端与所述第二半轴齿轮相连接,所述第一半轴齿轮和第二半轴齿轮用于在第一齿轮轴杆上转动,第一半轴齿轮和第二半轴齿轮用于连接半轴并驱动车轮本体,这种差速器结构简单,并且当车子转弯的过程中,与差速器相连接的两个车轮本体各自转动互不干涉。(The invention relates to the technical field of differentials and discloses a hydraulic differential, which comprises a first half shaft gear, a second half shaft gear and a first gear shaft rod, wherein one end of the first gear shaft rod is connected with the first half shaft gear, the other end of the first gear shaft rod is connected with the second half shaft gear, and the first half shaft gear and the second half shaft gear are used for rotating on the first gear shaft rod. In the hydraulic differential, one end of a first gear shaft rod is connected with a first half shaft gear, the other end of the first gear shaft rod is connected with a second half shaft gear, the first half shaft gear and the second half shaft gear are used for rotating on the first gear shaft rod, and the first half shaft gear and the second half shaft gear are used for connecting half shafts and driving wheel bodies.)

1. A differential hydraulic speed variator, characterized by: comprises a first half shaft gear (1), a second half shaft gear (2) and a first gear shaft lever (3), wherein one end of the first gear shaft lever (3) is connected with the first half shaft gear (1), the other end of the first gear shaft lever is connected with the second half shaft gear (2), the first half shaft gear (1) and the second half shaft gear (2) are used for rotating on the first gear shaft lever (3),

wherein the first side gear (1) and the second side gear (2) are driven by a hydraulic drive and can have different rotational speeds.

2. The hydraulic differential of claim 1, wherein: the hydraulic driving device comprises a first hydraulic motor (4) and a second hydraulic motor (5), wherein an output shaft of the first hydraulic motor (4) is meshed with the first side gear (1) and used for driving the first side gear (1), and an output shaft of the second hydraulic motor (5) is meshed with the second side gear (2) and used for driving the second side gear (2).

3. The hydraulic differential of claim 1, wherein: the hydraulic driving device comprises a middle partition plate (6), the middle partition plate (6) is fixed on the first gear shaft rod (3), a first shell (7) is detachably mounted on one side of the middle partition plate (6), and a second shell (8) is detachably mounted on the other side of the middle partition plate;

wherein, first casing (7) with form first chamber (71) of holding between median septum (6), first side gear (1) is located first chamber (71) of holding, first chamber (71) of holding is used for protecting first side gear (1), second casing (8) with form second chamber (81) between median septum (6), second side gear (2) are located second chamber (81) of holding, second chamber (81) of holding is used for protecting second side gear (2).

4. The hydraulic differential of claim 3, wherein: the first half shaft gear (1) divides the first accommodating cavity (71) into a first pressure cavity (711) and a second pressure cavity (712), a first pressure applying pipe (9) communicated with the first pressure cavity (711) is arranged on the first shell (7), and a first pressure relief pipe (91) communicated with the second pressure cavity (712) is arranged on the first shell (7); the medium flows through a first pressure cavity (711), a second pressure cavity (712) and a first pressure relief pipe (91) in sequence by a first pressure relief pipe (9) and is used for driving the first half-shaft gear, and the medium flows through the second pressure cavity (712), the first pressure cavity (711) and the first pressure relief pipe (9) in sequence by the first pressure relief pipe (91) and is used for reversely driving the first half-shaft gear;

the second half axle gear (2) divides the second accommodating cavity (81) into a third pressure cavity (811) and a fourth pressure cavity (812), a second pressure applying pipe (92) communicated with the third pressure cavity (811) is arranged on the second shell (8), a second pressure releasing pipe (93) communicated with the fourth pressure cavity (812) is arranged on the second shell (8), a medium sequentially flows through the third pressure cavity (811), the fourth pressure cavity (812) and the second pressure releasing pipe (93) through the second pressure applying pipe (92) and is used for driving the second half axle gear, and the medium sequentially flows through the fourth pressure cavity (812), the third pressure cavity (811) and the second pressure applying pipe (92) through the second pressure releasing pipe (93) and is used for reversely driving the second half axle gear.

5. The hydraulic differential of claim 4, wherein: a second gear shaft rod (10) is further fixed in the middle partition plate (6), one end of the second gear shaft rod (10) is rotatably connected with a first mating gear (11), the other end of the second gear shaft rod is rotatably connected with a second mating gear (12), the first mating gear (11) is located in the first accommodating cavity (71), the first mating gear (11) is meshed with the first half shaft gear (1), the second mating gear (12) is located in the second accommodating cavity (81), and the second mating gear (12) is meshed with the second half shaft gear (2).

6. The hydraulic differential of claim 5, wherein: the first side gear (1) and the first mating gear (11) are mutually matched to divide the first accommodating cavity (71) into a first pressure cavity (711) and a second pressure cavity (712), and the second side gear (2) and the second mating gear (12) are matched to divide the second accommodating cavity (81) into a third pressure cavity (811) and a fourth pressure cavity (812).

7. The hydraulic differential according to any one of claims 4-6, wherein: the first pressure applying pipe (9) is communicated with the second pressure applying pipe (92) through a first balance valve (13), and the first pressure relief pipe (91) is communicated with the second pressure relief pipe (93) through a second balance valve (14).

8. The hydraulic differential of claim 7, wherein: the first balance valve (13) is also communicated with a main pressure applying pipe (15), and the main pressure applying pipe (15) is used for conveying media to the first pressure applying pipe (9) and the second pressure applying pipe (92); the second balance valve (14) is also communicated with a total pressure relief pipe (16), and media in the first pressure relief pipe (91) and the second pressure relief pipe (93) are sent out through the total pressure relief pipe (16).

9. The hydraulic differential of claim 8, wherein: splines (17) are further arranged in the first side gear (1) and the second side gear (2), and the splines (17) are used for connecting the half shafts (18) to prevent the half shafts (18) from rotating relative to the splines (17).

10. The hydraulic differential of claim 9, wherein: a first through groove (72) and a second through groove (82) are further formed in the first shell (7) and the second shell (8) respectively.

Technical Field

The invention relates to the technical field of mechanical equipment, in particular to a hydraulic differential speed device.

Background

When the automobile turns, the turning radii of the inner side wheel and the outer side wheel are different, the turning radius of the outer side wheel is larger than that of the inner side wheel, the rotating speed of the outer side wheel is required to be higher than that of the inner side wheel when the automobile turns, and the differential mechanism is used for meeting the requirement that the rotating speeds of the two side wheels are different when the automobile turns.

The existing differential mechanism mainly comprises a planetary gear, a planetary gear carrier, a half axle gear and other parts, wherein the power of an engine enters the differential mechanism through a transmission shaft and drives the planetary gear carrier, and then the planetary gear on the planetary gear carrier drives two half axle gears so as to drive a left output shaft and a right output shaft and further drive a left wheel and a right wheel, the differential mechanism not only needs to be matched with the engine for use to meet the navigation requirement of an automobile, but also realizes that the inner side wheel and the outer side wheel of the automobile have different rotating speeds in the turning process of the automobile, and the existing differential mechanism has the following defects:

1. the existing differential has a plurality of parts, the consumption of materials required for preparing the parts can be increased due to the plurality of parts, and the vehicle weight can be increased;

2. when the wheel on one side connected with the differential mechanism slips and cannot rotate, the wheel on the other side connected with the differential mechanism cannot rotate, and therefore the vehicle cannot walk.

Disclosure of Invention

The invention provides a hydraulic differential speed device which has the advantages of simple structure, and the wheels at two sides connected with the differential speed device do not interfere with each other when rotating, thereby solving the problems mentioned in the background technology.

The invention provides the following technical scheme: a differential mechanism comprises a first half shaft gear, a second half shaft gear and a first gear shaft lever, wherein one end of the first gear shaft lever is connected with the first half shaft gear, the other end of the first gear shaft lever is connected with the second half shaft gear, the first half shaft gear and the second half shaft gear are used for rotating on the first gear shaft lever, the first half shaft gear and the second half shaft gear are both driven by a hydraulic driving device, and different rotating speeds can be achieved.

The hydraulic driving device comprises a first hydraulic motor and a second hydraulic motor, wherein an output shaft of the first hydraulic motor is meshed with the first side gear and used for driving the first side gear, and an output shaft of the second hydraulic motor is meshed with the second side gear and used for driving the second side gear.

As a preferable mode of the differential of the invention, wherein: a middle clapboard is fixed on the first gear shaft rod, a first shell is detachably arranged on one side of the middle clapboard, and a second shell is detachably arranged on the other side of the middle clapboard; the first shell and the middle partition plate form a first accommodating cavity, the first half shaft gear is located in the first accommodating cavity, the first accommodating cavity is used for protecting the first half shaft gear, the second shell and the second accommodating cavity is formed between the middle partition plate, the second half shaft gear is located in the second accommodating cavity, and the second accommodating cavity is used for protecting the second half shaft gear.

As a preferable mode of the differential of the invention, wherein: the differential of claim wherein: the first half-shaft gear divides the first accommodating cavity into a first pressure cavity and a second pressure cavity, a first pressure applying pipe communicated with the first pressure cavity is arranged on the first shell, and a first pressure releasing pipe communicated with the second pressure cavity is arranged on the first shell; the medium sequentially flows through the first pressure cavity, the second pressure cavity and the first pressure relief pipe by the first pressure applying pipe to drive the first half-shaft gear, and the medium sequentially flows through the second pressure cavity, the first pressure cavity and the first pressure relief pipe by the first pressure relief pipe to reversely drive the first half-shaft gear; the second half axle gear divides the second accommodating cavity into a third pressure cavity and a fourth pressure cavity, a second pressure applying pipe communicated with the third pressure cavity is arranged on the second shell, a second pressure relief pipe communicated with the fourth pressure cavity is arranged on the second shell, a medium sequentially flows through the third pressure cavity, the fourth pressure cavity and the second pressure relief pipe through the second pressure applying pipe and is used for driving the second half axle gear, and the medium sequentially flows through the fourth pressure cavity, the third pressure cavity and the second pressure relief pipe through the second pressure relief pipe and is used for reversely driving the second half axle gear.

As a preferable mode of the differential of the invention, wherein: a second gear shaft rod is further fixed in the middle partition plate, one end of the second gear shaft rod is rotatably connected with a first mating gear, the other end of the second gear shaft rod is rotatably connected with a second mating gear, the first mating gear is located in the first accommodating cavity, the first mating gear is meshed with the first half shaft gear, the second mating gear is located in the second accommodating cavity, and the second mating gear is meshed with the second half shaft gear.

As a preferable mode of the differential of the invention, wherein: the first half shaft gear and the first paired gear are matched with each other to divide the first accommodating cavity into a first pressure cavity and a second pressure cavity, and the second half shaft gear and the second paired gear are matched with each other to divide the second accommodating cavity into a third pressure cavity and a fourth pressure cavity.

As a preferable mode of the differential of the invention, wherein: the first pressure applying pipe is communicated with the second pressure applying pipe through a first balance valve, and the first pressure relief pipe is communicated with the second pressure relief pipe through a second balance valve.

As a preferable mode of the differential of the invention, wherein: the first balance valve is also communicated with a main pressure applying pipe which is used for delivering media to the first pressure applying pipe and the second pressure applying pipe; the second balance valve is also communicated with a main pressure relief pipe, and media in the first pressure relief pipe and the second pressure relief pipe are sent out through the main pressure relief pipe.

As a preferable mode of the differential of the invention, wherein: still be equipped with the spline in first side gear and the second side gear, the spline is used for connecting the half axle, avoids the half axle to rotate for the spline.

As a preferable mode of the differential of the invention, wherein: still be equipped with first logical groove and second in first casing and the second casing respectively and lead to the groove.

The invention has the following beneficial effects:

1. according to the hydraulic differential, one end of a first gear shaft rod is connected with a first half shaft gear, the other end of the first gear shaft rod is connected with a second half shaft gear, the first half shaft gear and the second half shaft gear are used for rotating on the first gear shaft rod, the first half shaft gear and the second half shaft gear are used for being connected with a wheel body, the first half shaft gear and the second half shaft gear are driven through a hydraulic driving device, the differential is simple in structure while meeting the requirement of being capable of driving the wheel body, and when a vehicle turns, two wheel bodies connected with the differential rotate independently and do not interfere with each other.

2. The traditional differential mechanism needs to input power by means of a transmission shaft, the structure of the transmission shaft is complex, the size and the mass are large, the hydraulic differential mechanism can drive the first half shaft gear and the second half shaft gear when liquid is injected into the first pressure cavity and the third pressure cavity through the first pressure applying pipe and the second pressure applying pipe, so that a wheel body is driven, the differential mechanism changes the power output structure of a vehicle, the component parts of a vehicle body are further simplified, and the total mass of the vehicle is reduced.

Drawings

FIG. 1 is a schematic structural view of example 1 of the present invention;

FIG. 2 is a schematic view of the overall structure of embodiment 2 of the present invention;

FIG. 3 is a schematic view of a portion of the structure of FIG. 2 according to the present invention;

FIG. 4 is a left side view of FIG. 2 in accordance with the present invention;

FIG. 5 is a right side view of FIG. 2 of the present invention;

FIG. 6 is a schematic perspective view of FIG. 2 according to the present invention;

FIG. 7 is a schematic view of the present invention showing the connection between the remaining half shafts of FIG. 6.

In the figure: 1-a first half-shaft gear; 2-a second side gear; 3-a first gear shaft; 4-a first hydraulic motor; 5-a second hydraulic motor; 6-a middle partition plate; 7-a first housing; 71-a first receiving chamber; 711-a first pressure chamber; 712-a second pressure chamber; 72-a first through slot; 8-a second housing; 81-a second containing cavity; 811-a third pressure chamber; 812-a fourth pressure chamber; 82-a second through slot; 9-a first pressure pipe; 91-a first pressure relief tube; 92-a second pressure applying tube; 93-a second pressure relief tube; 10-second gear shaft; 11-a first mating gear; 12-a second mating gear; 13-a first counter-balance valve; 14-a second balancing valve; 15-total pressure pipe; 16-total pressure relief pipe; 17-splines; 18-half shaft; 19-a wheel body; 20-fixing the cover; 21-a bearing; 22-motor gear.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.