Integrated electric emergency steering pump

Abstract

The utility model discloses an integrated electric emergency steering pump, which comprises a hydraulic pump, the driving motor is connected with the hydraulic pump and provides torque for the hydraulic pump; the central valve block assembly is arranged between the hydraulic pump and the driving motor and is used for connecting the hydraulic pump and the driving motor in a transition manner; the emergency steering switching valve is arranged on the central valve block assembly; according to the utility model, the emergency steering switching valve and the electric emergency pump are integrated into one assembly, so that a mounting bracket of the emergency steering switching valve is saved, and the space layout of the whole vehicle is facilitated; compared with an original scheme, the integrated electric emergency pump has the advantages that pipeline connection between the electric emergency pump and the emergency steering switching valve is reduced, and potential risks of oil leakage and pipeline resonance are reduced; by means of the emergency steering switching valve structure, when main steering works normally, the emergency steering alarm function can be achieved without starting an electric emergency pump, more energy is saved, and loss of a storage battery of the whole vehicle is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of hydraulic and electrical equipment, and in particular to an integrated electric emergency steering pump. Background Technology

[0002] With the increasing sophistication of vehicle steering requirements in my country, emergency steering functionality has become essential. Existing emergency steering solutions typically add an electric emergency steering pump and an emergency steering valve to the existing steering system. In addition, they require mounting brackets, hydraulic lines, and other accessories on the vehicle. This complex emergency steering system has the following drawbacks: 1. Due to the structure of the emergency steering valve, the electric emergency pump needs to operate at low speed for an extended period after vehicle startup to activate the flow alarm function, resulting in energy waste; 2. Two mounting brackets are required on the vehicle, making space layout difficult; 3. The addition of two hydraulic lines—one for the emergency steering valve and one for the electric emergency pump—increases the risk of potential oil leaks and potential line resonance. Utility Model Content

[0003] The main objective of this invention is to provide an integrated electric emergency steering pump, which aims to solve existing technical problems.

[0004] To achieve the above objectives, this utility model provides an integrated electric emergency steering pump, comprising:

[0005] Hydraulic pump;

[0006] A drive motor is connected to the hydraulic pump to provide torque to it;

[0007] A central valve block assembly is disposed between the hydraulic pump and the drive motor, and serves as a transitional connection between the hydraulic pump and the drive motor; and,

[0008] An emergency steering switching valve is located on the central valve block assembly.

[0009] Furthermore, the emergency steering switching valve includes a valve body, on which a first oil inlet is provided. The first oil inlet is connected to a first channel located within the valve body, and a tubular check valve and a slide valve are provided in the first channel.

[0010] Furthermore, an electro-hydraulic signal alarm is installed in the first channel near the first oil inlet.

[0011] Furthermore, the electro-hydraulic signal alarm includes a terminal assembly disposed within the cavity of the emergency steering switching valve and a terminal block disposed on the outer side wall of the terminal assembly located on the emergency steering switching valve.

[0012] Furthermore, the central valve block assembly is connected to the emergency steering switching valve via a transition block.

[0013] Furthermore, the central valve block assembly includes a valve block, the valve block is provided with a second oil inlet, the second oil inlet is connected to a second channel provided in the valve block, the second channel is connected to a third channel and a fourth channel respectively, the end of the third channel is connected to the oil return port, the end of the fourth channel is connected to the working port, and the fourth channel is connected to the first channel.

[0014] Furthermore, the central valve block assembly also includes an overflow valve, which is inserted into one end of the second channel.

[0015] Furthermore, the central valve block assembly also includes a one-way valve, which is inserted into the other end of the second channel.

[0016] Furthermore, the drive motor is a DC drive motor.

[0017] Furthermore, the hydraulic pump is an external gear pump.

[0018] The beneficial effects of this utility model are reflected in:

[0019] This utility model integrates the emergency steering switching valve and the electric emergency pump into a single assembly, saving the installation bracket of the emergency steering switching valve and facilitating the overall vehicle space layout.

[0020] Compared with the original solution, the integrated electric emergency pump of this utility model reduces the pipeline connection between the electric emergency pump and the emergency steering valve, thereby reducing the potential risks of oil leakage and pipeline resonance.

[0021] The emergency steering switching valve structure in this invention enables the emergency steering alarm function to be activated without starting the electric emergency pump when the main steering is working normally, which is more energy-efficient and reduces the overall battery consumption of the vehicle. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a cross-sectional view of the oil circuit of this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Hydraulic pump; 2. Emergency steering switching valve; 3. Central valve block assembly; 4. Drive motor; 5. First oil inlet; 6. Pipeline check valve; 7. Electro-hydraulic signal alarm; 8. Spool valve; 9. Second oil inlet; 10. Working port; 11. Return port; 12. Relief valve; 13. Check valve; 14. Transition block. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0027] Please see Figure 1 and 2 This utility model provides an integrated electric emergency steering pump, including: a hydraulic pump 1;

[0028] Drive motor 4 is connected to hydraulic pump 1 to provide torque to it;

[0029] The central valve block assembly 3 is located between the hydraulic pump 1 and the drive motor 4, and serves as a transitional connection between the hydraulic pump 1 and the drive motor 4; and,

[0030] Emergency steering switching valve 2 is located on the central valve block assembly 3.

[0031] In this embodiment, the emergency steering switching valve and the electric emergency pump are integrated into a single assembly, saving the installation bracket of the emergency steering switching valve and facilitating the overall vehicle space layout. Furthermore, compared to the original solution, the integrated electric emergency pump reduces the pipeline connection between the electric emergency pump and the emergency steering switching valve, thereby reducing the potential risks of oil leakage and pipeline resonance.

[0032] In one embodiment, the emergency steering switching valve 2 includes a valve body with a first oil inlet 5. The first oil inlet 5 communicates with a first channel a located within the valve body. The first channel a contains a tubular check valve 6 and a spool valve 8. In this embodiment, the hydraulic oil output from the main steering pump enters the first oil inlet 5, passes through the tubular check valve 6 and the spool valve 8, and reaches the working port 10 to supply oil to the steering gear. The check valve 13 prevents the main steering hydraulic oil from entering the external gear pump 1 and causing it to reverse.

[0033] In one embodiment, an electro-hydraulic signal alarm 7 is provided in the first channel a near the first oil inlet 5. In this embodiment, the electro-hydraulic signal alarm 7 of the emergency steering switching valve 2 is positioned after the first oil inlet 5. Therefore, when the main steering oil circuit is working normally, the electro-hydraulic signal alarm 7 is disengaged from the slide valve 8, and the electro-hydraulic signal alarm 7 is in an open state. In contrast, commonly used emergency valves in China place the electro-hydraulic signal alarm on the return oil line, requiring the emergency pump to operate to disengage the electro-hydraulic signal alarm from the ball valve, thus preventing alarms from occurring during normal operation. Therefore, the structure of the emergency steering switching valve 2, compared to commonly used domestic structures, avoids the emergency pump operating continuously, resulting in greater energy savings.

[0034] Specifically, the electro-hydraulic signal alarm 7 includes a terminal assembly located inside the emergency steering valve 2 and a terminal block located on the outer side wall of the terminal assembly.

[0035] In one embodiment, the center valve block assembly 3 and the emergency steering switching valve 2 are connected by a transition block 14. This configuration reduces the number of pipeline connections between the emergency steering switching valve 2 and the center valve block assembly 3, decreases the risk of pipeline resonance, shortens the distance, and requires only one mounting bracket on the vehicle, greatly reducing the difficulty of overall vehicle space layout.

[0036] In one embodiment, the central valve block assembly 3 includes a valve block with a second oil inlet 9. The second oil inlet 9 is connected to a second channel b located inside the valve block. The second channel b is connected to a third channel c and a fourth channel d. The end of the third channel c is connected to the return oil port 11, and the end of the fourth channel d is connected to the working port 10. The fourth channel d is also connected to the first channel a.

[0037] The drive motor 4 drives the hydraulic pump 1 to rotate. The hydraulic oil enters the second inlet 9 in the center valve block assembly 3, and after passing through the check valve 13, it merges with the main steering oil circuit to the working port 10. The tubular check valve 6 prevents the output flow of the external gear pump 1 from entering the main steering pump and causing damage when there is no flow at the first inlet 5.

[0038] When the flow rate through the first oil inlet 5 of the emergency steering switching valve 2 is less than the set threshold, the electro-hydraulic signal alarm 7 is connected to the slide valve 8, and when the vehicle speed is greater than 5km / h, the drive motor 4 starts the hydraulic pump 1, and the output hydraulic oil is combined with the main steering hydraulic oil through the second oil inlet 9 to the working port 10 to supply oil to the steering gear.

[0039] In one embodiment, the central valve block assembly 3 further includes an overflow valve 12, which is inserted into one end of the second channel. This embodiment is configured such that the overflow valve 12, at a set pressure, can prevent motor overload.

[0040] In one embodiment, the center valve block assembly 3 further includes a one-way valve 13, which is inserted into the other end of the second channel. In this embodiment, the one-way valve 13 is configured to prevent main steering hydraulic oil from flowing into the gear pump and causing it to reverse.

[0041] Specifically, drive motor 4 is a DC drive motor 4.

[0042] Specifically, hydraulic pump 1 is an external gear pump.

[0043] It should be noted that if the embodiments of this utility model involve directional indicators such as up, down, left, right, front, back, etc., the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indicators will also change accordingly.

[0044] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied. Furthermore, "multiple" refers to two or more. Moreover, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent.

[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An integrated electric emergency steering pump, characterized in that... ,include: Hydraulic pump (1); A drive motor (4) is connected to the hydraulic pump (1) to provide torque to it; A central valve block assembly (3) is disposed between the hydraulic pump (1) and the drive motor (4), and serves as a transitional connection between the hydraulic pump (1) and the drive motor (4); and, An emergency steering switching valve (2) is located on the central valve block assembly (3).

2. The integrated electric emergency steering pump as described in claim 1, characterized in that: The emergency steering switching valve (2) includes a valve body, on which a first oil inlet (5) is provided. The first oil inlet (5) is connected to a first channel located in the valve body. A tubular check valve (6) and a slide valve (8) are provided in the first channel.

3. An integrated electric emergency steering pump as described in claim 2, characterized in that: An electro-hydraulic signal alarm (7) is installed in the first channel near the first oil inlet (5).

4. An integrated electric emergency steering pump as described in claim 3, characterized in that: The electro-hydraulic signal alarm (7) includes a terminal assembly located inside the emergency steering valve (2) and a terminal block located on the outer side wall of the terminal assembly.

5. An integrated electric emergency steering pump as described in claim 1, characterized in that: The central valve block assembly (3) is connected to the emergency steering switching valve (2) via a transition block (14).

6. An integrated electric emergency steering pump as described in claim 3, characterized in that: The central valve block assembly (3) includes a valve block, on which a second oil inlet (9) is provided. The second oil inlet (9) is connected to a second channel located inside the valve block. The second channel is connected to a third channel and a fourth channel respectively. The end of the third channel is connected to a return oil port (11). The end of the fourth channel is connected to a working port (10), and the fourth channel is connected to a first channel.

7. An integrated electric emergency steering pump as described in claim 6, characterized in that: The central valve block assembly (3) also includes an overflow valve (12), which is inserted into one end of the second channel.

8. An integrated electric emergency steering pump as described in claim 7, characterized in that: The central valve block assembly (3) also includes a one-way valve (13), which is inserted into the other end of the second channel.

9. An integrated electric emergency steering pump as described in claim 1, characterized in that: The drive motor (4) is a DC drive motor (4).

10. An integrated electric emergency steering pump as described in claim 1, characterized in that: The hydraulic pump (1) is an external gear pump.

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