Hydraulic retarder chassis mounting structure and method of use

Abstract

The application discloses a hydraulic retarder chassis mounting structure and a use method, belongs to the field of auxiliary braking devices, and through the arrangement of a chassis connecting support and a through shaft, the through shaft is connected with an input flange plate and an output flange plate at both ends and is further connected with a hollow shaft, the connection between the hollow shaft and the hydraulic retarder is achieved, the through shaft is connected with the hydraulic retarder, when the structure is connected, the hydraulic retarder is started, the input flange plate, the through shaft and the output flange plate are driven to rotate through the transmission shaft of the whole vehicle, the hollow shaft is further driven to rotate, the oil in the hydraulic retarder is stirred and extruded by the hollow shaft, and finally the whole vehicle is decelerated; the structure principle is simple, the hydraulic retarder does not need to be installed at the rear end of the transmission, the arrangement difficulty of the chassis is reduced, the bouncing amount and the reliability of the power system assembly are improved; and the whole vehicle factory can flexibly adjust the arrangement position of the hydraulic retarder, the matching of the hydraulic retarder is improved, and the structure has good popularization and application value.

Description

Technical Field

[0001] This invention belongs to the field of auxiliary braking devices, specifically relating to a hydraulic retarder chassis mounting structure and its usage method. Background Technology

[0002] A hydraulic retarder is an auxiliary braking device that uses hydraulic fluid as its working medium and energy carrier. It consists of a rotor with an impeller, a stator with an impeller, and a retarder housing, and is widely used in large buses and medium- and heavy-duty commercial vehicles.

[0003] Currently, hydraulic retarders are generally installed at the rear of the transmission and integrated with it, resulting in an increase in the overall weight of the vehicle's powertrain and a rearward shift in the center of gravity. To reduce the impact of the transmission on the rear end of the engine block during extreme operating conditions and to ensure the reliable operation of the powertrain, auxiliary support devices for the powertrain are required, increasing the difficulty of chassis layout. The compact layout of vehicle chassis components means that the installation position and space of the hydraulic retarder are essentially fixed and cannot be adjusted. This leads to interference between other components and the hydraulic retarder in some vehicle chassis, making it impossible to install the hydraulic retarder.

[0004] It is evident that the existing hydraulic retarder chassis mounting structure is quite difficult to arrange, resulting in the inability to install the hydraulic retarder on some vehicle models due to layout issues. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides a hydraulic retarder chassis mounting structure and usage method. This structure arranges the hydraulic retarder between the drive shafts, facilitating flexible adjustment of the hydraulic retarder's mounting position according to the chassis component layout, while simultaneously improving the runout and reliability of the powertrain assembly.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A hydraulic retarder chassis mounting structure includes a chassis connecting bracket;

[0008] The chassis connecting bracket is connected to a hydraulic retarder;

[0009] A through shaft is inserted into the chassis connecting bracket. The input end of the through shaft is connected to an input flange, and the output end is connected to an output flange.

[0010] A hollow shaft is fitted onto the through shaft;

[0011] One end of the hollow shaft is connected to the hydraulic retarder, and the other end is located inside the chassis connecting bracket.

[0012] Furthermore, the through shaft is provided with a boss, and bearings are provided on both sides of the boss;

[0013] A spacer sleeve is arranged between the bearing and the boss.

[0014] Further, the chassis connecting support is provided with a front bearing cover and a rear bearing cover, which are used for fixing the bearing.

[0015] Further, the front bearing cover and the rear bearing cover are respectively provided with oil seals, one of which is located between the front bearing cover and the input flange plate, and the other is located between the rear bearing cover and the hollow shaft.

[0016] Further, the input end of the through shaft is connected with the input flange plate through a spline, and the output end of the through shaft is connected with the output flange plate through a spline.

[0017] The input end and the output end of the through shaft are respectively provided with locking nuts.

[0018] Further, the output flange plate is provided with a rear oil seal of the retarder and an O-shaped ring, which are fixed with the through shaft through locking nuts.

[0019] Further, the central part of the hollow shaft is connected with the through shaft through a spline.

[0020] Further, the chassis connecting support is provided with an oil filling hole, which is connected with an oil filling screw plug.

[0021] Further, the hydraulic retarder comprises a rotor impeller and a stator impeller, and one end of the hollow shaft is connected with the rotor impeller.

[0022] A use method of a hydraulic retarder chassis mounting structure, based on the hydraulic retarder chassis mounting structure, comprises the following steps:

[0023] The chassis connecting support is connected and fixed with the vehicle chassis, the input flange plate and the output flange plate are respectively connected with the transmission shaft of the vehicle, the hydraulic retarder is started, the transmission shaft drives the input flange plate, the through shaft and the output flange plate to rotate, and then drives the hollow shaft to rotate, the oil in the hydraulic retarder is stirred and extruded, and the deceleration of the vehicle is realized.

[0024] Compared with the prior art, the hydraulic retarder chassis mounting structure has the following beneficial effects:

[0025] The application provides a hydraulic retarder chassis mounting structure, which is characterized in that a chassis connecting support and a through shaft are arranged, the through shaft is connected with an input flange plate and an output flange plate at two ends, and is further connected with a hollow shaft, and the hollow shaft is connected with the hydraulic retarder, so that the through shaft is connected with the hydraulic retarder; when the structure is connected, the hydraulic retarder is started, the input flange plate, the through shaft and the output flange plate are driven to rotate by the transmission shaft of the whole vehicle, and the hollow shaft is further driven to rotate, the oil in the hydraulic retarder is stirred and extruded by the hollow shaft, and the whole vehicle is finally decelerated; the structure principle is simple, the hydraulic retarder does not need to be installed at the rear end of the transmission, the arrangement difficulty of the chassis is reduced, the bounce and reliability of the power system assembly are improved, the arrangement position of the hydraulic retarder can be flexibly adjusted by the whole vehicle factory, the matching of the hydraulic retarder is improved, and the structure has good popularization and application value.

[0026] Preferably, the through shaft is provided with a boss, and bearings are arranged on both sides of the boss, so that the bearings can stably work the input flange plate on the through shaft, and the chassis connecting support and the input flange plate are well supported.

[0027] Preferably, the chassis connecting support is provided with a front bearing cover and a rear bearing cover, so that the bearings are well fixed by the front bearing cover and the rear bearing cover.

[0028] Preferably, the through shaft is connected with the input flange plate and the output flange plate through splines respectively, and is locked and fixed by lock nuts, so that the working stability and reliability of the structure are improved.

[0029] Preferably, the output flange plate is provided with a retarder rear oil seal and an O-shaped ring, so that the working oil in the hydraulic retarder is conveniently sealed.

[0030] Preferably, the chassis connecting support is provided with an oil filling hole, and an oil filling plug is arranged in the oil filling hole, so that the lubricating oil is conveniently filled.

[0031] Preferably, the hydraulic retarder comprises a rotor impeller and a stator impeller, the stator impeller is connected with the hydraulic retarder shell, when the hydraulic retarder works, the rotor impeller rotates with the hollow shaft, and the oil is stirred and extruded between the rotor impeller and the stator impeller, so that the whole vehicle is decelerated.

[0032] The application further provides a using method of the hydraulic retarder chassis mounting structure, which is based on the above hydraulic retarder chassis mounting structure, and the transmission does not need to be connected with the hydraulic retarder, and the whole vehicle can be decelerated by using the method, so that the arrangement difficulty of the chassis is greatly reduced, the method principle is simple and convenient to operate and implement. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of a hydraulic retarder chassis mounting structure provided in an embodiment of the present invention;

[0034] Figure 2 This is a cross-sectional schematic diagram of a hydraulic retarder chassis mounting structure provided in an embodiment of the present invention.

[0035] Figure label:

[0036] 1-Through shaft; 2-Locking nut; 3-Input flange; 4-Chassis connecting bracket; 5-Front bearing cover; 6-Oil filler plug; 7-Hydraulic retarder; 8-Oil seal; 9-Bearing; 10-Spacer; 11-Hollow shaft; 12-Rear bearing cover; 13-Retarder front oil seal; 14-Retarder rear oil seal; 15-O-ring; 16-Output flange. Detailed Implementation

[0037] This invention provides a hydraulic retarder chassis mounting structure, including a chassis connecting bracket 4; a hydraulic retarder 7 is connected to the chassis connecting bracket 4; a through shaft 1 is inserted inside the chassis connecting bracket 4, with an input flange 3 connected to the input end of the through shaft 1 and an output flange 16 connected to the output end; a hollow shaft 11 is sleeved on the through shaft 1, and the center of the hollow shaft 11 is connected to the through shaft 1 via a spline; one end of the hollow shaft 11 is connected to the hydraulic retarder 7, and the other end is located inside the chassis connecting bracket 4; the input end of the through shaft 1 is connected to the input flange 3 via a spline, and the output end of the through shaft 1 is connected to the output flange 16 via a spline; locking nuts 2 are respectively provided at the input and output ends of the through shaft 1.

[0038] Specifically, the through shaft 1 is provided with a boss, and bearings 9 are provided on both sides of the boss; a spacer 10 is provided between the bearings 9 and the boss.

[0039] The chassis connecting bracket 4 has an oil filling hole, and an oil filling plug 6 is connected to the oil filling hole.

[0040] The chassis connecting bracket 4 is provided with a front bearing cover 5 and a rear bearing cover 12, which are used to fix the bearing 9. Oil seals 8 are respectively installed on the inner wall of the front bearing cover 5 and the rear bearing cover 12, wherein one oil seal 8 is located between the front bearing cover 5 and the input flange 3, and the other is located between the rear bearing cover 12 and the hollow shaft 11.

[0041] Here, the output flange 16 is provided with a retarder rear oil seal 14 and an O-ring 15, which are fixed to the through shaft 1 by a lock nut 2.

[0042] Specifically, the hydraulic retarder comprises a rotor impeller and a stator impeller, and one end of the hollow shaft 11 is connected to the rotor impeller.

[0043] The application also provides a method for using the hydraulic retarder chassis mounting structure, which comprises the following steps based on the hydraulic retarder chassis mounting structure:

[0044] The chassis connecting bracket 4 is connected and fixed to the vehicle chassis, the input flange 3 and the output flange 16 are connected to the transmission shaft of the vehicle, the hydraulic retarder 7 is started, the transmission shaft drives the input flange 3, the through shaft 1 and the output flange 16 to rotate, and then drives the hollow shaft 11 to rotate, so as to agitate and extrude the oil in the hydraulic retarder 7, and the speed of the vehicle is reduced.

[0045] Embodiment

[0046] The application will be further described below in combination with the drawings and embodiments.

[0047] The hydraulic retarder chassis mounting structure of the embodiment comprises a through shaft 1, a chassis connecting bracket 4, a front bearing cover 5, a hydraulic retarder 7, a hollow shaft 11 and a rear bearing cover 12, as shown in Figure 1 and Figure 2 The chassis connecting bracket 4 is connected to the shell of the hydraulic retarder 7 through a connecting piece, and screw holes for connecting the vehicle chassis support device are reserved on both sides of the chassis connecting bracket 4.

[0048] The hollow shaft 11 is connected to the rotor impeller inside the hydraulic retarder 7, and the hollow shaft 11 is divided into two parts by the installation position of the rotor impeller, one end of the hollow shaft 11 is connected to the bearing inner ring of the hydraulic retarder 7, and the other end extends into the inside of the chassis connecting bracket 4, and the components mounted on the other end of the hollow shaft 11 include a retarder front oil seal 13 for sealing the working oil in the hydraulic retarder 7, an oil seal 8 for sealing the lubricating grease or lubricating oil, and a bearing 9 for supporting the chassis connecting bracket 4.

[0049] The through shaft 1 passes through the hollow shaft 11 of the hydraulic retarder 7, the chassis connecting bracket 4, the input flange 3 and the output flange 16. The front bearing cover 5 is provided with an oil seal 8, and the front bearing cover 5 is connected to the chassis connecting bracket 4 through a connecting piece.

[0050] The input flange 3 is provided with an oil seal 8 and a bearing 9, the bearing 9 is used to support the input flange 3 and the chassis connecting bracket 4, and the bearing 9 is axially positioned by a spacer 10. The rear bearing cover 12 is provided with an oil seal 8, and is connected to the chassis connecting bracket 4 through a connecting piece.

[0051] The output flange 16 is equipped with an O-ring 15 and a retarder rear oil seal 14 and is fixed with the through shaft 1 through a locking nut 2, and the O-ring 15 and the retarder rear oil seal 14 are used to seal the working oil of the hydraulic retarder 7.

[0052] The specific working principle of the embodiment is as follows:

[0053] When working: the hydraulic retarder chassis mounting structure is connected and fixed with the vehicle chassis through the threaded holes reserved on the chassis connecting support 4, the input flange 3 is connected with the transmission shaft flange for transmission, and the output flange 16 is connected with the transmission shaft flange connected with the main reducer at the other end for transmission.

[0054] When the vehicle needs to be decelerated during driving, the operating handle of the hydraulic retarder 7 is pulled down, so that the control valve of the hydraulic retarder 7 is opened, and the working oil enters the working cavity of the hydraulic retarder 7. At this time, the input flange 3, the through shaft 1, the hollow shaft 11 and the output flange 16 rotate at the same speed as the transmission shaft, and the rotor impeller connected to the hollow shaft 11 also rotates at high speed. The working oil entering the working cavity flows at high speed under the action of the rotor impeller and impacts the stator impeller, transferring the energy of the rotor impeller to the stator impeller. However, the stator impeller cannot rotate because it is fixed on the vehicle frame together with the hydraulic retarder shell through the structure, so that the rotor impeller and the stator impeller form an agitation and extrusion effect on the oil. This effect consumes the energy transmitted to the rotor impeller through the hydraulic retarder chassis mounting device, achieving the deceleration effect of the hydraulic retarder 7 on the vehicle. This process causes the working oil to heat up, and the kinetic energy is converted into heat energy. The heated oil flows into the heat exchanger through the oil outlet on the retarder shell, and the oil is cooled after heat exchange, and the heat is dissipated to the air through the cooling liquid. The cooled oil reenters the retarder through the oil inlet on the retarder shell.

[0055] It should be noted that the bearings and oil seals in the structure need to be lubricated, so grease needs to be applied at the bearings 9 and oil seals 8 or the oiling screw plug 6 on the chassis connecting support 4 needs to be opened for oiling.

[0056] The hydraulic retarder chassis mounting structure provided by the embodiment has the following advantages:

[0057] 1. The embodiment can make the hydraulic retarder not need to be installed at the rear end of the transmission, reducing the difficulty of arranging the chassis and improving the bounce amount and reliability of the power system assembly.

[0058] 2. The embodiment can enable the vehicle manufacturer to flexibly adjust the arrangement position of the hydraulic retarder, improving the matching of the hydraulic retarder.

[0059] Although the embodiments of the present application have been described above with reference to the drawings and the embodiments, the present application is not limited to the above-described specific embodiments and application fields, and the above-described specific embodiments are merely illustrative, instructive, and not restrictive. Those skilled in the art can make various forms under the guidance of the specification without departing from the scope of the claims of the present application, and these are all included in the protection of the present application.

Claims

1. A hydraulic retarder chassis mounting structure, characterized by, The chassis connecting bracket (4) is connected with a hydraulic retarder (7); A through shaft (1) is inserted in the chassis connecting bracket (4), an input flange (3) is connected to an input end of the through shaft (1), and an output flange (16) is connected to an output end of the through shaft (1); A hollow shaft (11) is sleeved on the through shaft (1); One end of the hollow shaft (11) is connected to the hydraulic retarder (7), and the other end is located in the chassis connecting bracket (4); A boss is arranged on the through shaft (1), and bearings (9) are arranged on both sides of the boss; one bearing (9) is arranged between the input flange (3) and the chassis connecting bracket (4), and the other bearing (9) is arranged between the chassis connecting bracket (4) and the hollow shaft (11); A spacer sleeve (10) is arranged between the bearing (9) and the boss; The input end of the through shaft (1) is connected to the input flange (3) through a spline, and the output end of the through shaft (1) is connected to the output flange (16) through a spline; Lock nuts (2) are arranged at the input end and the output end of the through shaft (1); Threaded holes for connecting with a vehicle chassis support device are reserved on both sides of the chassis connecting bracket (4). Front and rear bearing covers (5) and (12) are arranged on the chassis connecting bracket (4) and used for fixing the bearings (9).

2. A hydraulic retarder chassis mounting arrangement according to claim 1, wherein, Oil seals (8) are arranged on the inner walls of the front and rear bearing covers (5) and (12), respectively; one oil seal (8) is located between the front bearing cover (5) and the input flange (3), and the other oil seal (8) is located between the rear bearing cover (12) and the hollow shaft (11).

3. A hydraulic retarder chassis mounting arrangement according to claim 2, wherein, A retarder rear oil seal (14) and an O-shaped ring (15) are arranged on the output flange (16) and fixed to the through shaft (1) through the lock nuts (2).

4. A hydraulic retarder chassis mounting arrangement according to claim 1, wherein, The center of the hollow shaft (11) is connected to the through shaft (1) through a spline.

5. A hydraulic retarder chassis mounting structure according to claim 1, wherein An oil filling hole is arranged on the chassis connecting bracket (4) and connected to an oil filling plug (6).

6. A hydraulic retarder chassis mounting arrangement according to claim 1, wherein, The hydraulic retarder comprises a rotor impeller and a stator impeller, and one end of the hollow shaft (11) is connected to the rotor impeller.

7. A hydraulic retarder chassis mounting structure according to claim 1, wherein The method comprises the following steps:

8. A method of using a hydraulic retarder chassis mounting structure according to any one of claims 1-7, characterized in that, The chassis connecting bracket (4) is connected and fixed with a vehicle chassis, the input flange (3) and the output flange (16) are connected with a transmission shaft of the vehicle, respectively, the hydraulic retarder (7) is started, the transmission shaft drives the input flange (3), the through shaft (1) and the output flange (16) to rotate, and then drives the hollow shaft (11) to rotate, so that the oil in the hydraulic retarder (7) is stirred and pressed, and the speed reduction of the vehicle is realized. ​

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