CN218519486U

CN218519486U - Rack and pinion passenger train hinging plate mechanism

Info

Publication number: CN218519486U
Application number: CN202121988361.3U
Authority: CN
Inventors: 郝庆军; 陈良; 唐姜明
Original assignee: Jointech Suzhou Vehicle System Co ltd
Current assignee: Jointech Suzhou Vehicle System Co ltd
Priority date: 2020-09-14
Filing date: 2021-08-23
Publication date: 2023-02-24
Anticipated expiration: 2031-08-23

Abstract

The utility model provides a rack and pinion passenger train hinge plate mechanism, including fore-stock, after-poppet, carousel bearing assembly and hydraulic buffer, fore-stock and after-poppet pass through carousel bearing assembly rotatable coupling, hydraulic buffer provides the damping for the relative rotation of fore-stock and after-poppet. The hydraulic buffer device comprises a first rack and a second rack, the first rack and the second rack are parallel to each other and are arranged on the rear frame perpendicular to the advancing direction of the vehicle, and the design defect that a mainstream product has a zero moment arm is overcome in the structural principle.

Description

Rack and pinion passenger train hinging plate mechanism

Technical Field

The utility model relates to an articulated vehicle chassis technical field especially relates to a rack and pinion passenger train hinging disc mechanism.

Background

Articulation is a flexible connection relative to a rigid connection, and is accomplished by "articulating" the connection between two parts or objects while maintaining some directional freedom between the parts or objects, typically by structurally using a cylindrical or round ball head. Articulated structures are commonly used on farm tractors, trucks, articulated passenger cars and train cars.

The articulated vehicle generally comprises two carriages, wherein a front carriage is connected with a rear carriage through a chassis articulated system, the chassis articulated system comprises a front frame, a rear frame, a turntable bearing and a hydraulic buffer device for providing damping, the front frame is fixedly connected with the front carriage through a front cross beam, and the rear frame is fixedly connected with the rear carriage through a rear cross beam.

With the improvement of public awareness of environmental protection, new energy passenger cars are more and more favored by customers. The new energy passenger car also puts forward certain requirement to the whole car weight, and the mainstream articulated system in the existing market can not completely meet the requirement of the market on products.

Disclosure of Invention

The utility model aims at providing a rack and pinion passenger train hinging plate mechanism has solved mainstream product in the structural principle and has had the arm of force for zero design defect. In order to realize the purpose, the utility model adopts the following technical scheme:

a hinged disk mechanism of a gear rack passenger car comprises a front frame, a rear frame, a turntable bearing assembly and a hydraulic buffer device, wherein the front frame and the rear frame are rotatably connected through the turntable bearing assembly; the hydraulic buffer device comprises a gear, a first rack and a second rack which are positioned on two sides of the gear and are respectively meshed with the gear; the gear is fixedly connected with the lower surface of the front frame, and the first rack and the second rack are parallel to each other and are arranged on the rear frame perpendicular to the advancing direction of the vehicle.

Furthermore, the outer ring of the turntable bearing assembly is fixedly connected with the front frame, and the inner ring of the turntable bearing assembly is fixedly connected with the rear frame.

Furthermore, pistons are arranged at two ends of the first rack and the second rack, and hydraulic cylinders are fixedly arranged at corresponding positions of two ends of the first rack and the second rack on the rear frame; pistons at two ends of each rack extend into corresponding hydraulic cylinders, and sealed hydraulic cavities separated from the outside are formed among the gear, the first rack, the second rack and the hydraulic cylinders.

Compared with the prior art, the utility model has the advantages of: the installation size and technical parameter consistency of the current mainstream products are compatible, the assembly universality and interchangeability are ensured, meanwhile, compared with the mainstream products, the weight is reduced by 100-200 kg, and the design defect that the moment arm of the mainstream products is zero is overcome on the basis of the structure principle.

Drawings

The present invention will be described in more detail hereinafter based on embodiments and with reference to the accompanying drawings. Wherein:

FIG. 1 is a three-dimensional structure diagram of a hinged disk mechanism of a rack and pinion passenger car of the present invention;

fig. 2 is a schematic view of the rack and pinion structure of the present invention;

fig. 3 is a schematic diagram of the hydraulic system of the present invention.

Wherein the reference numerals mean:

1. a front frame; 2. a rear frame; 3. a turntable bearing assembly; 4. a gear; 5. a hydraulic system; 6. an electronic control unit; 7. a first rack; 8. a second rack; 9. an oil pipe; 10. a valve block assembly; 11. a third check valve; 12. an electromagnetic valve; 13. a proportional relief valve; 14. a first check valve; 15. a second one-way valve; 16. an overflow valve; 17. a fifth check valve; 18. an oil tank; 19. a sixth check valve; 20. and a fourth check valve.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings.

As shown in figure 1, the hinged disk mechanism of the gear rack passenger car comprises a front frame 1, a rear frame 2, a turntable bearing assembly 3 and a hydraulic buffer device. Articulated passenger train generally comprises two sections carriages around by, and articulated dish mechanism is used for connecting front carriage and back carriage, and front truck 1 is fixed with front carriage through the front beam, and back frame 2 is fixed with the back carriage through the back beam, and when the carriage took place the turning motion before the passenger train, front carriage drove the front truck rotatory for the back frame. Wherein the front frame 1 and the rear frame 2 are rotatably connected through a turntable bearing assembly 3, and the hydraulic buffer device provides damping for the relative rotation of the front frame 1 and the rear frame 2. The outer ring of the turntable bearing assembly 3 is fixedly connected with the front frame 1, and the inner ring of the turntable bearing assembly 3 is fixedly connected with the rear frame 2.

The hydraulic buffer device comprises a gear 4, a first rack 7 and a second rack 8 which are positioned at two sides of the gear 4 and are respectively meshed with the gear 4, and a hydraulic system 5. The gear 4 is fixedly connected to a lower surface of the front frame 1, and a first rack 7 and a second rack 8 are parallel to each other and arranged on the rear frame 2 perpendicularly to a vehicle advancing direction (a direction indicated by an arrow in fig. 2). Pistons are arranged at two ends of the first rack 7 and the second rack 8, hydraulic cylinders (not shown in the figure) are fixedly arranged at corresponding positions of two ends of the racks on the rear frame 2, the pistons at two ends of each rack extend into the corresponding hydraulic cylinders, and sealed hydraulic cavities separated from the outside are formed among the gear 4, the first rack 7, the second rack 8 and the hydraulic cylinders.

The hydraulic system 5 comprises an oil pipe 9, a valve block assembly 10 and an oil tank 18, wherein the hydraulic cylinder and the oil tank 18 are connected with the valve block assembly 10 through the oil pipe 9. The left cavity of the first rack 7 is communicated with the right cavity of the second rack 8 to form a first oil drainage loop, the right cavity of the first rack 7 is communicated with the left cavity of the second rack 8 to form a second oil drainage loop, and the first oil drainage loop and the second oil drainage loop are both connected with the valve block assembly 10.

The first drain circuit is connected to the inlet of the first check valve 14, the second drain circuit is connected to the inlet of the second check valve 15, and a common oil pressure region is formed between the outlet of the first check valve 14 and the outlet of the second check valve 15, and the common oil pressure region is connected to the oil tank 18 through a pressure control oil path. The pressure control oil circuit is integrated in the valve block assembly 10 and comprises an electromagnetic valve 12, a proportional overflow valve 13 and an overflow valve 16, wherein the proportional overflow valve 13 and the overflow valve 16 are connected in parallel and then are connected in series with the electromagnetic valve 12.

Further, a third check valve 11 is arranged in the piston at the left end of the first rack 7, and a fourth check valve 20 is arranged in the piston at the right end; a fifth one-way valve 17 is arranged in the piston at the left end of the second rack 8, and a sixth one-way valve 19 is arranged in the piston at the right end. Each piston divides the corresponding hydraulic cylinder into a rod cavity and a rodless cavity, the rod cavity is connected with an inlet of the one-way valve, the rodless cavity is connected with an outlet of the one-way valve, and the rod cavity, the rodless cavity and the one-way valve form an oil suction path.

The hydraulic buffer device is also provided with an electric control unit 6, the electric control unit 6 carries out logic calculation according to the change of the vehicle speed and the rotation angle, and then the opening degree of the proportional overflow valve 13 is controlled, so that the rack hydraulic cylinder provides proper damping force for the hinge system, and the running safety of the vehicle is ensured.

The hinged disk mechanism of the gear rack passenger car specifically acts as follows:

(a) When the vehicle takes place the turn left, preceding carriage drives the relative after-poppet of front truck and to the rotation left, and 4 anticlockwise rotations of gear, rack 7 move to the left, and 8 right sides of rack move simultaneously, and the oil extraction return circuit is this moment: the tank 18 → the third check valve 11/the sixth check valve 19 → the left chamber of the rack 7/the right chamber of the rack 8 → the first check valve 14 → the proportional relief valve 13 → the solenoid valve working under → the tank 18; the oil absorption loop is as follows: tank 18 → fourth check valve 20/fifth check valve 17 → right chamber of rack 7/left chamber of rack 8.

(b) When the vehicle takes place the right turn, preceding carriage drives the relative after-poppet of front truck and rotates right, and gear 4 clockwise rotation, rack 7 move to the left, and rack 8 moves to the right simultaneously, and the oil extraction return circuit is this moment: tank 18 → fourth check valve 20/fifth check valve 17 → right rack chamber 7/left rack chamber 8 → second check valve 15 → proportional relief valve 13 → lower operation of solenoid valve 12 → tank 18; the oil absorption loop is as follows: tank 18 → third check valve 11/sixth check valve 19 → left chamber of rack 7/right chamber of rack 8.

(c) The electric control unit 6 carries out logical calculation according to the speed of the whole vehicle and the change of rack displacement, and controls the opening of the proportional overflow valve, so that the hydraulic buffer device provides proper damping force and the normal running of the vehicle is ensured.

(d) When the electric control unit 6 is suddenly powered off or the detected pressure of the oil inlet of the overflow valve 16 reaches a certain set value, the electromagnetic valve 12 is powered off, the electromagnetic valve 12 works at a lower position, and the hydraulic buffer device provides constant damping.

The foregoing is illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the invention in any way. Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can, without departing from the scope of the invention, the technical solution of the present invention can be utilized with many possible variations and modifications, or with equivalent embodiments, to the technical solution disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. A hinged disk mechanism of a gear rack passenger car comprises a front frame (1), a rear frame (2), a turntable bearing assembly (3) and a hydraulic buffer device, wherein the front frame (1) and the rear frame (2) are rotatably connected through the turntable bearing assembly (3), and the hydraulic buffer device provides damping for the relative rotation of the front frame (1) and the rear frame (2); the method is characterized in that: the hydraulic buffer device comprises a gear (4), a first rack (7) and a second rack (8), wherein the first rack (7) and the second rack (8) are positioned on two sides of the gear (4) and are respectively meshed with the gear (4); the gear (4) is fixedly connected with the lower surface of the front frame (1), and the first rack (7) and the second rack (8) are parallel to each other and are arranged on the rear frame (2) perpendicular to the advancing direction of the vehicle.

2. The hinged disk mechanism of the rack and pinion passenger car of claim 1, characterized in that: the outer ring of the turntable bearing assembly (3) is fixedly connected with the front frame (1), and the inner ring of the turntable bearing assembly (3) is fixedly connected with the rear frame (2).

3. The hinged disk mechanism of the rack and pinion passenger car of claim 1, characterized in that: pistons are arranged at two ends of the first rack (7) and the second rack (8), and hydraulic cylinders are fixedly arranged at corresponding positions of two ends of the first rack (7) and the second rack (8) on the rear frame (2).

4. The articulated tray mechanism of a rack and pinion passenger vehicle of claim 3, wherein: and pistons at two ends of each rack extend into corresponding hydraulic cylinders, and sealed hydraulic cavities separated from the outside are formed among the gear (4), the first rack (7), the second rack (8) and the hydraulic cylinders.