A dual-direction steering pump for automobile emergency steering system

Abstract

The present invention discloses a dual-rotation steering pump for an automobile emergency steering system, including a base of the dual-rotation steering pump for emergency steering, a shell installed on the upper end of the base, a pumping assembly installed inside the shell, a control assembly arranged in the middle of the pumping assembly, and the control assembly connected to the motor output shaft. The device can independently support the steering system of the steering power cylinder to ensure the normal operation of the steering power cylinder, and the steering of the device does not share too many parts with the original steering system, thereby reducing the situation where the dual steering systems cannot be used at the same time. In short, the emergency steering system of the patent can ensure that the moving vehicle has the ability to temporarily steer when any failure occurs in the engine and the main steering system, and provide auxiliary steering force for the driver.

Description

Technical Field

[0001] The invention relates to the technical field of emergency steering systems, and in particular to a dual-rotation direction steering pump used in automobile emergency steering systems. Background Art

[0002] The automobile steering system is a device used to change or maintain the direction of the vehicle. Its main function is to enable the driver to control the direction of the vehicle according to his own intentions, ensuring that the car drives accurately and safely under different road conditions and driving conditions (such as straight driving, turning, avoiding, etc.).

[0003] Patent "CN201210176354.2" proposes a dual-direction steering pump for an automobile emergency steering system, comprising a front pump body, a middle pump body and a rear pump body connected in sequence by an eccentric reduction mechanism, an oil inlet connected to the eccentric reduction mechanism is arranged on the rear pump body, a plurality of radial holes are arranged on the middle pump body, a plunger is arranged in each radial hole to form an oil pump subsystem, the bottom of the plunger cooperates with the eccentric outer circle of the eccentric reduction mechanism, a plunger spring is arranged in the inner hole of the plunger, a plug is arranged at the end of the radial hole to seal the plunger and the plunger spring in the hole, the outlet of the oil pump subsystem is arranged on the end face of the middle pump body and an oil sealing sheet is arranged at the outlet position on the end face, the oil sealing sheet and the disc spring are assembled in the annular groove on the end face of the rear pump body, and the annular groove is connected to the oil outlet arranged on the rear pump body, the auxiliary steering system of the patent shares some parts of the main steering system, when the shared parts are damaged, both steering systems cannot be used any more, thereby increasing the risk of the auxiliary steering system being unusable. Summary of the invention

[0004] The purpose of the present invention is to solve the above-mentioned problem and to propose a dual-direction steering pump for an automobile emergency steering system.

[0005] In order to achieve the above object, the present invention adopts the following technical scheme: comprising a base of a dual-direction steering pump for emergency steering, a shell is installed on the upper end of the base, a pumping assembly is installed inside the shell, a control assembly is arranged in the middle of the pumping assembly, and the control assembly is connected to the output shaft of the motor;

[0006] The pumping assembly includes a first rotating disk and a second rotating disk, wherein a plurality of sliding plates are evenly distributed on the first rotating disk and the second rotating disk, respectively, and the first rotating disk and the second rotating disk are connected by bolts; a first guide cavity and a first regulating cavity are provided in the middle of the first rotating disk, the first guide cavity is arranged on a side close to the second rotating disk, a slide groove used for matching with the sliding plate is provided on the outer wall of the first rotating disk, a first guide hole connected with the first guide cavity is provided between the two slide grooves, a first check valve is installed inside the first guide hole, a through hole is provided between the first guide cavity and the first regulating cavity, the slide groove is connected with the first regulating cavity but not with the first guide cavity, and the interior of the first guide hole is relatively sealed, and when one of the sliding plates approaches the interior of the first guide hole, the other sliding plates will be away from the first guide hole;

[0007] The second rotating disk is arranged in a mirror image with the first rotating disk, the flow direction of the second one-way valve installed inside the second flow guide hole in the second rotating disk is opposite to the flow direction of the first one-way valve, the through hole of the first rotating disk is used in conjunction with the rotating shaft, and a flow guide pipe is rotatably installed inside the through hole of the second rotating disk, and the flow guide pipe is fixedly connected to the housing;

[0008] The two sides of the sliding plate are slidably connected with the first shell and the second shell, rollers are rotatably installed on both sides of the sliding plate, elliptical grooves for matching with the rollers are provided inside the first shell and the second shell, and elliptical rings for matching with the sliding plate are fixedly provided inside the first shell and the second shell, and the elliptical rings are provided with two groups of liquid inlet and outlet ports;

[0009] In actual applications, since there are crescent-shaped cavities at the upper and lower positions between the elliptical ring and the pumping assembly, as the pumping assembly rotates, the sliding plate extends outward along the inner wall of the elliptical ring and then contracts. In this process, the cavity formed by the outer wall of the first turntable, the two sliding plates and the elliptical ring changes from small to large, and then from large to small. In the process of changing from small to large, the liquid between the elliptical ring and the first shell will enter between the elliptical ring and the pumping assembly. In the process of changing from large to small, since the cavity between the outer wall of the first turntable, the two sliding plates and the elliptical ring is relatively sealed, the liquid is then squeezed into the first guide hole, and then enters the first guide cavity from the first guide hole, and then enters the interior of the guide tube from the first guide cavity.

[0010] The control assembly comprises a diverter ring slidably arranged in the middle of the first rotating disk and the second rotating disk, the outer wall of the diverter ring is evenly provided with two groups of circular holes, the two groups of circular holes are staggered, a rotating shaft is fixedly installed in the middle of the diverter ring, the rotating shaft passes through the first rotating disk and the housing and extends to the outside, and the rotating shaft is connected to the output shaft of the motor;

[0011] Limiting plates are fixedly arranged at both ends of the diverter ring, and a limiting groove used in conjunction with the limiting plates is provided inside the first flow guide cavity;

[0012] In practical applications, the sliding distance of the limiting piece in the limiting groove is determined by the diameter of the circular hole.

[0013] Furthermore, the housing comprises a first shell fixedly connected to the base, a second shell is fixedly mounted on one side of the first shell by bolts, and an oil cavity is formed on an outer wall of the second shell;

[0014] A connecting hole is provided inside the base, a sealing plate is provided in the middle of the connecting hole, a first oil pipe and a second oil pipe are installed at both ends of the connecting hole respectively, the first oil pipe and the second oil pipe are connected with the left and right ends of the steering cylinder respectively, a first drainage hole is provided in the middle of the base on one side of the sealing plate, the upper end of the first drainage hole is located between the first shell and the second shell and connected thereto, a second drainage hole is provided in the middle of the base on the other side of the sealing plate, the second drainage hole is connected with the oil chamber, and electronic valves are provided inside the second drainage hole, the first drainage hole, the first oil pipe and the second oil pipe respectively.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] This device can independently support the steering system of the steering power cylinder to ensure the normal operation of the steering power cylinder, and the steering of this device does not share too many parts with the original steering system, thereby reducing the situation where the dual steering systems cannot be used at the same time. In short, the emergency steering system of this patent can ensure that the moving vehicle has the ability to temporarily steer when any failure occurs in the engine and the main steering system, providing auxiliary steering force for the driver. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a dual-direction steering pump for an automobile emergency steering system proposed by the present invention;

[0018] Figure 2 This is a schematic diagram of the housing structure of a dual-direction steering pump for an automobile emergency steering system proposed by the present invention;

[0019] Figure 3 A schematic diagram of the base structure of a dual-direction steering pump for an automobile emergency steering system proposed by the present invention;

[0020] Figure 4 A schematic diagram of the structure of a pumping assembly of a dual-direction steering pump for an automobile emergency steering system proposed by the present invention;

[0021] Figure 5 A schematic diagram of the distribution of sealing plates of a dual-direction steering pump for an automobile emergency steering system proposed by the present invention;

[0022] Figure 6 This is a schematic diagram of the first rotating disk structure of a dual-direction steering pump for an automobile emergency steering system proposed by the present invention;

[0023] Figure 7 This is a schematic diagram of the second turntable structure of a dual-direction steering pump for an automobile emergency steering system proposed by the present invention;

[0024] Figure 8 This is a schematic structural diagram of a first guide chamber and a first regulating chamber of a dual-direction steering pump for an automobile emergency steering system proposed by the present invention;

[0025] Fig. 9 This is a schematic diagram of the structure of the inlet and outlet of a dual-direction steering pump for an automobile emergency steering system proposed by the present invention;

[0026] Fig.10 The present invention is a schematic structural diagram of a sealing plate of a dual-direction steering pump for an automobile emergency steering system.

[0027] In the figure: 1. base; 101. connecting hole; 102. second oil pipe; 103. first oil pipe; 104. first drainage hole; 105. second drainage hole; 2. outer shell; 201. first shell; 2011. elliptical ring; 2012. liquid inlet and outlet; 2013. elliptical groove; 202. second shell; 2021. oil chamber; 3. pumping assembly; 301. first turntable; 3011. slide groove; 3012. first guide hole; 3013. first guide chamber; 3014. first regulating chamber; 3015. limiting groove; 302. sliding plate; 3021. roller; 303. second turntable; 4. control assembly; 401. diverter ring; 402. round hole; 403. limiting plate; 404. rotating shaft; 5. guide pipe. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] Reference Figure 1-10A dual-direction steering pump for an automobile emergency steering system comprises a base 1 of the dual-direction steering pump for emergency steering, a housing 2 is mounted on the upper end of the base 1, a pumping assembly 3 is mounted inside the housing 2, a control assembly 4 is arranged in the middle of the pumping assembly 3, and the control assembly 4 is connected to the output shaft of the motor;

[0031] The pumping assembly 3 includes a first rotating disk 301 and a second rotating disk 303, and a plurality of sliding plates 302 are evenly distributed on the first rotating disk 301 and the second rotating disk 303, respectively. The first rotating disk 301 and the second rotating disk 303 are connected by bolts; a first guide cavity 3013 and a first regulating cavity 3014 are provided in the middle of the first rotating disk 301, and the first guide cavity 3013 is arranged on a side close to the second rotating disk 303. A slide groove 3011 used in conjunction with the sliding plate 302 is provided on the outer wall of the first rotating disk 301, and the two slide grooves 3011 are provided between the first and second rotating disks 3013 and the second adjusting cavity 3014. A first guide hole 3012 connected to the first guide cavity 3013 is provided between the first guide cavity 3013 and the first regulating cavity 3014, a first one-way valve is installed inside the first guide cavity 3012, a through hole is provided between the first guide cavity 3013 and the first regulating cavity 3014, the slide groove 3011 is connected to the first regulating cavity 3014 but not to the first guide cavity 3013, the interior of the first guide cavity 3012 is relatively sealed, when one of the sliding plates 302 approaches the interior of the first guide cavity 3012, the other sliding plates 302 will be away from the first guide cavity 3012;

[0032] The second rotating disk 303 is arranged in a mirror image with the first rotating disk 301. The flow direction of the second one-way valve installed inside the second guide hole in the second rotating disk 303 is opposite to the flow direction of the first one-way valve. The through hole of the first rotating disk 301 is used in conjunction with the rotating shaft 404. A guide pipe 5 is rotatably installed inside the through hole of the second rotating disk 303. The guide pipe 5 is fixedly connected to the housing 2, and the guide pipe 5 communicates with the first guide chamber 3013 and the oil chamber 2021.

[0033] The two sides of the sliding plate 302 are slidably connected with the first shell 201 and the second shell 202. Rollers 3021 are rotatably installed on both sides of the sliding plate 302. Elliptical grooves 2013 used to match the rollers 3021 are provided inside the first shell 201 and the second shell 202. Elliptical rings 2011 used to match the sliding plate 302 are fixedly provided inside the first shell 201 and the second shell 202. The elliptical rings 2011 are provided with two sets of liquid inlet and outlet ports 2012.

[0034] In actual application, since there is a crescent-shaped cavity at the upper and lower positions between the elliptical ring 2011 and the pumping component 3, as the pumping component 3 rotates, the sliding plate 302 extends outward along the inner wall of the elliptical ring 2011 and then contracts. In this process, the cavity formed by the outer wall of the first turntable 301, the two sliding plates 302 and the elliptical ring 2011 changes from small to large, and then changes from large to small. In the process of changing from small to large, the liquid between the elliptical ring 2011 and the first shell 201 will enter between the elliptical ring 2011 and the pumping component 3. In the process of changing from large to small, since the cavity between the outer wall of the first turntable 301, the two sliding plates 302 and the elliptical ring 2011 is relatively sealed, the liquid is then squeezed into the first guide hole 3012, and then enters the first guide cavity 3013 from the first guide hole 3012, and then enters the interior of the guide tube 5 from the first guide cavity 3013.

[0035] The control assembly 4 includes a diverter ring 401 slidably disposed in the middle of the first rotating disk 301 and the second rotating disk 303. Two groups of circular holes 402 are evenly opened on the outer wall of the diverter ring 401. The two groups of circular holes 402 are staggered. A rotating shaft 404 is fixedly installed in the middle of the diverter ring 401. The rotating shaft 404 passes through the first rotating disk 301 and the housing 2 and extends to the outside. The rotating shaft 404 is connected to the output shaft of the motor.

[0036] The two ends of the flow dividing ring 401 are respectively fixed with limit plates 403, and the interior of the first flow guiding cavity 3013 is provided with limit grooves 3015 used in conjunction with the limit plates 403;

[0037] In practical applications, the sliding distance of the limiting piece 403 in the limiting groove 3015 is determined by the diameter of the circular hole 402 .

[0038] Furthermore, the housing 2 includes a first housing 201 fixedly connected to the base 1, a second housing 202 is fixedly mounted on one side of the first housing 201 by bolts, and an oil cavity 2021 is formed on the outer wall of the second housing 202;

[0039] A connecting hole 101 is provided inside the base 1, a sealing plate is provided in the middle of the connecting hole 101, a first oil pipe 103 and a second oil pipe 102 are respectively installed at both ends of the connecting hole 101, the first oil pipe 103 and the second oil pipe 102 are respectively connected to the left and right ends of the steering cylinder, a first drainage hole 104 is provided in the middle of the base 1 on one side of the sealing plate, the upper end of the first drainage hole 104 is located between the first shell 201 and the second shell 202 and is connected thereto, a second drainage hole 105 is provided in the middle of the base 1 on the other side of the sealing plate, the second drainage hole 105 is connected to the oil chamber 2021, and electronic valves are respectively provided inside the second drainage hole 105, the first drainage hole 104, the first oil pipe 103 and the second oil pipe 102.

[0040] Working principle: When the main steering system is damaged, the staff uses a switch to shut down the hydraulic transmission of the main steering system, which can be achieved by using a control element such as an electronic valve, and then opens the electronic valves inside the first oil pipe 103 and the second oil pipe 102. The electronic valves inside the second drainage hole 105 and the first drainage hole 104 are in a normally open state. Then when the staff rotates the steering wheel again, the emergency steering system of the device will be activated. A torque sensor is installed on the steering shaft of the steering wheel. When the driver turns the steering wheel, the steering wheel is fixedly connected to the lower connecting rod by bolts. The torque sensor can accurately The magnitude of the torque and the direction of rotation applied to the steering wheel are detected. At the same time, the vehicle speed sensor detects the vehicle's driving speed information. This information is transmitted to the electronic control unit. The electronic control unit calculates according to the received torque and speed information according to a preset control strategy, and then controls the motor to rotate. The motor drives the shaft 404 to rotate, and the shaft 404 drives the diverter ring 401 to rotate. One of the two groups of circular holes 402 on the outer wall of the diverter ring 401 coincides with the first guide holes 3012 in the first rotating disk 301, while the other group of circular holes 402 is misaligned with the second guide holes in the second rotating disk 303, thereby The hydraulic oil flows as follows: from the left end of the steering cylinder through the pipeline into the second oil pipe 102, from the second oil pipe 102 into the right end of the connecting hole 101, from the right end of the connecting hole 101 into the second drainage hole 105, from the second drainage hole 105 into the position between the elliptical ring 2011 and the first housing 201, at this time, the liquid enters the position between the elliptical ring 2011 and the pumping assembly 3 through the liquid inlet and outlet 2012, the pumping assembly 3 pumps the liquid into the guide pipe 5, from the guide pipe 5 into the first drainage hole 104, and from the first drainage hole 104 into the connecting hole 201. The left end of the connecting hole 101 enters the right end of the steering power cylinder from the left end of the connecting hole 101, thereby realizing emergency steering of the car. Conversely, the hydraulic oil from the right end of the steering power cylinder enters the left end. The device can independently support the steering system of the steering power cylinder to ensure the normal operation of the steering power cylinder. Moreover, the steering of the device does not share too many parts with the original steering system, thereby reducing the situation where the dual steering systems cannot be used at the same time. In short, the emergency steering system of this patent can ensure that the moving vehicle has the ability to temporarily steer when any failure occurs in the engine and the main steering system, providing auxiliary steering force for the driver.

[0041] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A dual-direction steering pump for an automobile emergency steering system, characterized in that: The invention comprises a base (1) of a dual-directional steering pump for emergency steering, a housing (2) being mounted on the upper end of the base (1), a pumping assembly (3) being mounted inside the housing (2), a control assembly (4) being arranged in the middle of the pumping assembly (3), and the control assembly (4) being connected to an output shaft of a motor; The pumping assembly (3) comprises a first rotating disk (301) and a second rotating disk (303), wherein the first rotating disk (301) and the second rotating disk (303) are respectively evenly distributed with a plurality of sliding plates (302), and the first rotating disk (301) and the second rotating disk (303) are connected by bolts; The control component (4) comprises a diverter ring (401) slidably arranged in the middle position between the first rotating disk (301) and the second rotating disk (303); the outer wall of the diverter ring (401) is evenly provided with two groups of circular holes (402); the two groups of circular holes (402) are staggered; a rotating shaft (404) is fixedly installed in the middle of the diverter ring (401); the rotating shaft (404) passes through the first rotating disk (301) and the housing (2) and extends to the outside; the rotating shaft (404) is connected to the output shaft of the motor.

2. A dual-direction steering pump for an automobile emergency steering system according to claim 1, characterized in that: A first flow guide chamber (3013) and a first regulating chamber (3014) are provided in the middle of the first rotating disk (301); the first flow guide chamber (3013) is arranged on a side close to the second rotating disk (303); a slide groove (3011) used in conjunction with the sliding plate (302) is provided on the outer wall of the first rotating disk (301); a first flow guide hole (3012) connected to the first flow guide chamber (3013) is provided between the two slide grooves (3011); a first one-way valve is installed inside the first flow guide hole (3012); a through hole is provided in the middle of the first flow guide chamber (3013) and the first regulating chamber (3014); the slide groove (3011) is connected to the first regulating chamber (3014) but not to the first flow guide chamber (3013).

3. A dual-direction steering pump for an automobile emergency steering system according to claim 2, characterized in that: The second rotating disk (303) is arranged in a mirror image with the first rotating disk (301); the flow direction of the second one-way valve installed inside the second guide hole in the second rotating disk (303) is opposite to the flow direction of the first one-way valve; the through hole of the first rotating disk (301) is used in conjunction with the rotating shaft (404); a guide tube (5) is rotatably installed inside the through hole of the second rotating disk (303); and the guide tube (5) is fixedly connected to the housing (2).

4. The dual-direction steering pump for an automobile emergency steering system according to claim 1, characterized in that: The housing (2) comprises a first shell (201) fixedly connected to the base (1); a second shell (202) is fixedly mounted on one side of the first shell (201) by means of bolts; an oil chamber (2021) is provided on an outer wall of the second shell (202).

5. The dual-direction steering pump for an automobile emergency steering system according to claim 1, characterized in that: The base (1) is provided with a connecting hole (101) inside, a sealing plate is provided in the middle of the connecting hole (101), a first oil pipe (103) and a second oil pipe (102) are respectively installed at both ends of the connecting hole (101), a first drainage hole (104) is provided in the middle of the base (1) on one side of the sealing plate, the upper end of the first drainage hole (104) is located between the first shell (201) and the second shell (202) and is connected thereto, a second drainage hole (105) is provided in the middle of the base (1) on the other side of the sealing plate, the second drainage hole (105) is connected to the oil chamber (2021), and electronic valves are respectively provided inside the second drainage hole (105), the first drainage hole (104), the first oil pipe (103) and the second oil pipe (102).

6. A dual-direction steering pump for an automobile emergency steering system according to claim 1, characterized in that: The two sides of the sliding plate (302) are slidably connected to the first shell (201) and the second shell (202); rollers (3021) are rotatably mounted on the two sides of the sliding plate (302); the first shell (201) and the second shell (202) are provided with elliptical grooves (2013) for use with the rollers (3021); the first shell (201) and the second shell (202) are fixedly provided with elliptical rings (2011) for use with the sliding plate (302); the elliptical rings (2011) are provided with two groups of liquid inlet and outlet ports (2012).

7. A dual-direction steering pump for an automobile emergency steering system according to claim 1, characterized in that: Limiting plates (403) are fixedly provided at both ends of the diverter ring (401), and a limiting groove (3015) used in conjunction with the limiting plate (403) is provided inside the first flow guide cavity (3013).

Images