阅读说明：本技术 一种组合式液力缓速器 (Combined hydraulic retarder ) 是由 蒋辰希 张承元 李世鹏 于 2021-07-26 设计创作，主要内容包括：本发明提供了一种组合式液力缓速器,包括取力器输入齿轮；所述取力器输入齿轮啮合传动取力器齿毂,取力器齿毂上装有花键齿毂,花键齿毂上靠近取力器齿毂的端部装有离合器摩擦片,花键齿毂固定于活塞,活塞由主油压接口管路连通控制移动；花键齿毂同轴啮合传动缓速总成,缓速总成中同轴安装多组定子和转子构成的电动驱动转动结构。本发明在取力口安装了组合式液力缓速器。组合式液力缓速器不与变速器产生干涉,能为变速器实现缓速功能,安装和拆解都很方便；结构简单,安全可靠,拆装简单,可根据不同车型调整转子与定子数量,进而更好地匹配不同车辆的制动需求,还易于制造。(The invention provides a combined hydraulic retarder, which comprises a power takeoff input gear; the power takeoff input gear is meshed with a transmission power takeoff gear hub, a spline gear hub is arranged on the power takeoff gear hub, a clutch friction plate is arranged at the end part, close to the power takeoff gear hub, of the spline gear hub, the spline gear hub is fixed on a piston, and the piston is communicated with a main oil pressure interface pipeline to control movement; the spline gear hub is coaxially engaged with a transmission retarding assembly, and an electric driving rotating structure formed by a plurality of groups of stators and rotors is coaxially arranged in the retarding assembly. The combined hydraulic retarder is arranged at the power take-off port. The combined hydraulic retarder does not interfere with the speed changer, can realize the speed-slowing function for the speed changer, and is convenient to install and disassemble; simple structure, safe and reliable, the dismouting is simple, can adjust rotor and stator quantity according to different motorcycle types, and then matches the braking demand of different vehicles better, still easily makes.)

1. A combined hydrodynamic retarder comprises a power takeoff input gear (24), and is characterized in that: the power takeoff input gear (24) is meshed with and drives a power takeoff gear hub (4), a spline gear hub (7) is arranged on the power takeoff gear hub (4), a clutch friction plate (6) is arranged at the end part, close to the power takeoff gear hub (4), of the spline gear hub (7), the spline gear hub (7) is fixed to a piston (8), and the piston (8) is communicated with and controlled to move by a main oil pressure interface pipeline; a spline gear hub (7) is coaxially engaged with a transmission retarding assembly, and an electric driving rotating structure formed by a plurality of groups of stators and rotors is coaxially arranged in the retarding assembly.

2. The combined hydrodynamic retarder of claim 1, wherein: the moving direction of the piston (8) and the rotating axial direction of the power takeoff gear hub (4) are positioned on the same straight line.

3. The combined hydrodynamic retarder of claim 1, wherein: the speed reducing assembly is connected with a cooler through a rubber oil outlet pipe (21) and a rubber oil inlet pipe (22).

4. The combined hydrodynamic retarder of claim 1, wherein: spline tooth hub (7) meshing transmission shaft (9), coaxial meshing transmission integral key shaft (10) in transmission shaft (9) rear end, integral key shaft (10) are the power input shaft of slow assembly.

5. The combined hydrodynamic retarder of claim 1, wherein: in the retarding assembly, the power input at the front end is a spline shaft (10), the rear end of the spline shaft (10) coaxially drives a multi-stage rotor, each stage of rotor can be rotatably embedded in a stator, and the stator and the retarder shell are integrally formed.

6. A combined hydrodynamic retarder according to claim 3, characterized in that: the speed-reducing assembly is formed by mutually clamping and assembling a front cover (25) at the front end and a rear cover (27) at the rear end, and a rubber oil outlet pipe (21) and a rubber oil inlet pipe (22) are respectively connected to the rear cover (27) and the front cover (25).

7. The combined hydrodynamic retarder of claim 5, wherein: the spline shaft (10) is rotatably fixed on the front cover (25) through a double-layer angular contact ball bearing (12), and a sealing ring (11) is installed at the front end of the angular contact ball bearing (12).

8. The combined hydrodynamic retarder of claim 5, wherein: the multi-stage rotors are fixedly connected through threaded connecting shafts, and the multi-stage stators are fixedly connected through threaded fasteners (26).

Technical Field

The invention relates to a combined hydraulic retarder.

Background

The hydraulic retarder is mainly used on large and heavy vehicles, and plays a role in retarding and braking when the vehicles run on a downhill road, so that a driver does not need to tread the brake for a long time, the abrasion of the brake is reduced, the driving safety is improved, and the labor intensity of the driver is reduced. Because many derailleurs do not equip the hydraulic retarber, and install the hydraulic retarber additional at the derailleur end again and then need change derailleur transmission structure, increased manufacturing and installation degree of difficulty.

Disclosure of Invention

In order to solve the technical problem, the invention provides the combined hydraulic retarder which can realize a retarding function for the transmission and is convenient to mount and dismount.

The invention is realized by the following technical scheme.

The invention provides a combined hydraulic retarder, which comprises a power takeoff input gear; the power takeoff input gear is meshed with a transmission power takeoff gear hub, a spline gear hub is arranged on the power takeoff gear hub, a clutch friction plate is arranged at the end part, close to the power takeoff gear hub, of the spline gear hub, the spline gear hub is fixed on a piston, and the piston is communicated with a main oil pressure interface pipeline to control movement; the spline gear hub is coaxially engaged with a transmission retarding assembly, and an electric driving rotating structure formed by a plurality of groups of stators and rotors is coaxially arranged in the retarding assembly.

The moving direction of the piston and the rotating axial direction of the power takeoff gear hub are positioned on the same straight line.

The speed reducing assembly is connected with a cooler through a rubber oil outlet pipe and a rubber oil inlet pipe.

The spline gear hub is meshed with the transmission shaft, the rear end of the transmission shaft is coaxially meshed with the transmission spline shaft, and the spline shaft is a power input shaft of the speed reducing assembly.

In the retarding assembly, the power input at the front end is a spline shaft, the rear end of the spline shaft coaxially drives a multi-stage rotor, each stage of rotor can be rotatably embedded in a stator, and the stator and the retarder shell are integrally formed.

The retarding assembly is mutually clamped and assembled by a front cover at the front end and a rear cover at the rear end, and a rubber oil outlet pipe and a rubber oil inlet pipe are respectively connected with the rear cover and the front cover.

The spline shaft is rotatably fixed on the front cover through a double-layer angular contact ball bearing, and a sealing ring is arranged at the front end of the angular contact ball bearing.

The multi-stage rotors are fixedly connected through threaded connecting shafts, and the multi-stage stators are fixed through threaded fasteners.

The invention has the beneficial effects that: and a combined hydraulic retarder is arranged at the power take-off port. The combined hydraulic retarder does not interfere with the speed changer, can realize the speed-slowing function for the speed changer, and is convenient to install and disassemble; simple structure, safe and reliable, the dismouting is simple, can adjust rotor and stator quantity according to different motorcycle types, and then matches the braking demand of different vehicles better, still easily makes.

Drawings

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

FIG. 2 is a schematic view of the half-section internal structure of FIG. 1;

FIG. 3 is an exploded view of the retarder assembly of FIG. 2.

In the figure: 1-electromagnetic valve, 2-power takeoff cover, 3-deep groove ball bearing, 4-power takeoff gear hub, 5-needle bearing, 6-clutch friction plate, 7-spline gear hub, 8-piston, 9-transmission shaft, 10-spline shaft, 11-sealing ring, 12-angular contact ball bearing, 13-retarder front rotor, 14-retarder front housing stator, 15-front threaded connecting shaft, 16-retarder rear rotor, 17-retarder rear housing stator, 18-rear threaded connecting shaft, 19-supporting shaft, 20-self-aligning bearing, 21-rubber oil outlet pipe, 22-rubber oil inlet pipe, 23-spring, 24-power takeoff input gear, 25-front cover, 26-threaded fastener and 27-rear cover.

Detailed Description

The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.

Example 1

A combined hydrodynamic retarder as shown in fig. 1 to 3, comprising a power take-off input gear 24; the power takeoff input gear 24 is meshed with the power takeoff gear hub 4 in a transmission mode, the power takeoff gear hub 4 is provided with a spline gear hub 7, a clutch friction plate 6 is arranged at the end, close to the power takeoff gear hub 4, of the spline gear hub 7, the spline gear hub 7 is fixed to a piston 8, and the piston 8 is communicated through a main oil pressure interface pipeline to control movement; a spline gear hub 7 is coaxially engaged with a transmission retarding assembly, and an electric driving rotating structure formed by a plurality of groups of stators and rotors is coaxially arranged in the retarding assembly.

Example 2

Based on embodiment 1, the moving direction of the piston 8 and the rotational axial direction of the power take-off hub gear 4 are aligned.

Example 3

Based on the embodiment 1, the retarder assembly is connected with a cooler through a rubber oil outlet pipe 21 and a rubber oil inlet pipe 22.

Example 4

Based on embodiment 1, the spline hub 7 is engaged with the transmission shaft 9, the rear end of the transmission shaft 9 is coaxially engaged with the transmission spline shaft 10, and the spline shaft 10 is a power input shaft of the speed reducing assembly.

Example 5

Based on embodiment 1, in the retarder assembly, the front end power input is the spline shaft 10, the rear end of the spline shaft 10 coaxially drives the multi-stage rotors, each stage of the rotors is rotatably embedded in the stator, and the stator and the retarder shell are integrally formed.

Example 6

Based on embodiment 3, and the retarder assembly is assembled by clamping the front cover 25 at the front end and the rear cover 27 at the rear end to each other, the rubber oil outlet pipe 21 and the rubber oil inlet pipe 22 are respectively attached to the rear cover 27 and the front cover 25.

Example 7

According to embodiment 5, the spline shaft 10 is rotatably fixed to the front cover 25 by the double-layer angular ball bearing 12, and the front end of the angular ball bearing 12 is provided with the seal ring 11.

Example 8

According to embodiment 5, the multi-stage rotors are connected and fixed by the threaded connection shaft, and the multi-stage stators are fixed by the threaded fastener 26.

Example 9

Based on above-mentioned embodiment, rotor and stator are the two-stage, and is concrete, wholly comprises power takeoff assembly and retarder assembly two parts, and wherein, the power takeoff assembly mainly includes: the power takeoff device comprises an electromagnetic valve 1, a power takeoff cover 2, a deep groove ball bearing 3, a power takeoff gear hub 4, a needle bearing 5, a clutch friction plate 6, a spline gear hub 7, a piston 8, a transmission shaft 9, a spring 23 and a power takeoff input gear 24; the retarder assembly mainly includes: the retarder comprises a spline shaft 10, a sealing ring 11, an angular contact ball bearing 12, a retarder front rotor 13, a retarder front housing stator 14, a front threaded connecting shaft 15, a retarder rear rotor 16, a retarder rear housing stator 17, a rear threaded connecting shaft 18, a supporting shaft 19, a self-aligning bearing 20, a rubber oil outlet pipe 21 and a rubber oil inlet pipe 22.

When the electromagnetic valve 1 is not electrified, oil liquid at the main oil pressure interface cannot enter the power takeoff, the piston 8 keeps the original position under the acting force of the spring 23, and a clutch friction plate cannot be pressed. The power of the power takeoff cannot be transmitted to the retarder. The retarder does not play a role in speed reduction at this time.

When the electromagnetic valve 1 is electrified, oil liquid at the main oil pressure interface enters the power takeoff, flows into the piston cylinder through the oil hole in the center of the transmission shaft 9, pushes the piston 8 to overcome the resistance of the spring 23, and compresses the clutch friction plate 6.

The power is transmitted to the power take-off input gear 24, so as to drive the power take-off gear hub 4 to rotate; the pressed clutch friction plate transmits power to the spline gear hub 7 to drive the transmission shaft 9; finally, the retarder rotor is driven to rotate through the connection of the spline shaft 10, and the retarder plays a role in speed reduction at the moment.

The rotor is a casting part, the middle part is a cylindrical shaft, threads are arranged at two ends of the shaft, and the rotor can be connected with the spline shaft 10 and the front threaded connecting shaft 15, so that the rotor is convenient to disassemble. The rotor is cast with a plurality of fan blades which are evenly distributed along the circumference. When the rotor rotates, the transmission oil plays a role of blocking, and then plays a role of speed reduction. Meanwhile, the fan blades also drive the transmission oil to flow along the axis, enter the cooler and flow into the retarder again from the rubber oil inlet pipe 22, so that the self-circulation of the transmission oil is realized.

Thus, the present invention:

the retarder rotor and the retarder shell stators are cast parts, the plurality of retarder shell stators are connected through bolts, and the end faces of the plurality of retarder shell stators are sealed through O-shaped rings. A plurality of fan blades are cast in an inner hole of a stator of the retarder shell and are uniformly distributed along the circumference. The rotating transmission oil driven by the retarder rotor impinges on the blades of the retarder housing stator and is directed to flow towards the axis direction, promoting self-circulation of the transmission oil.

Different braking torques can be obtained by increasing or reducing the connection quantity of the retarder rotor and the retarder shell stator. The number of the retarder rotor and the number of the retarder shell stators are increased, so that the retarder can obtain larger braking torque under the same input rotating speed; the reduction of the number of the retarder rotor and the retarder shell stator can enable the retarder to obtain smaller braking torque under the same input rotating speed. The user can decide the quantity of retarder rotor and retarder casing stator according to the braking needs of difference.