Electric emergency steering pump

Abstract

The utility model discloses an electric emergency steering pump which comprises a direct current motor provided with a motor output shaft and a direct current contactor arranged on the direct current motor; a gear pump shaft extension is arranged in the gear pump, an oil inlet is formed in the outer surface of the gear pump, and the gear pump shaft extension is connected with an output shaft of the motor through a coupler; the center valve block is arranged between the direct current motor and the gear pump, and an oil outlet is formed in the outer surface of the center valve block; according to the utility model, a 4.5 KW direct current motor is specifically adopted, and a 5.8 mL / r displacement gear pump is matched, so that large output flow and output pressure can be realized; a temperature control switch, a safety valve, a one-way valve and other structures are adopted to guarantee reliable operation of the electric emergency steering pump; the motor is of a totally-closed structure, the protection grade can reach IP54, and the sealing protection grade is high; the device is convenient to install on a whole vehicle, easy to arrange, free of a power take-off port and controllable in cost.

Description

Technical Field

[0001] This utility model relates to the technical field of emergency steering systems for engineering machinery and commercial vehicles, and in particular to an electric emergency steering pump. Background Technology

[0002] Nowadays, most construction machinery and commercial vehicles use emergency pumps and emergency valves mounted on the gearbox or transfer case to form an emergency steering system. This system serves as an emergency steering power source when the vehicle's steering system loses power, ensuring vehicle driving safety.

[0003] This emergency steering system has certain drawbacks. Firstly, it is costly and requires a power take-off port on the vehicle, further increasing the overall cost. Secondly, it has high requirements for installation location and space. Additionally, there are electric emergency system solutions, but these suffer from low emergency pump power, small output flow, low protection level, and lack of safety valve protection. Therefore, providing a simple, reliable, easy-to-install, and high-output-flow electric emergency pump is an urgent need. Utility Model Content

[0004] The main objective of this invention is to provide an electric emergency steering pump, which aims to solve existing technical problems.

[0005] To achieve the above objectives, this utility model provides an electric emergency steering pump, comprising:

[0006] A DC motor having a motor output shaft, and the DC motor being equipped with a DC contactor;

[0007] A gear pump, having an internal gear pump shaft extension and an oil inlet on its outer surface, wherein the gear pump shaft extension is connected to the motor output shaft via a coupling; and

[0008] A central valve block is located between the DC motor and the gear pump, and an oil outlet is provided on the outer surface of the central valve block.

[0009] Furthermore, there are two oil outlets, distributed on different sides of the central valve block.

[0010] Furthermore, one of the two oil outlets is in operation, while the other oil outlet is sealed by a metal plug.

[0011] Furthermore, the central valve block is equipped with a safety valve and an oil return port.

[0012] Furthermore, the central valve block is equipped with a one-way valve.

[0013] Furthermore, the DC motor is equipped with a temperature control switch.

[0014] Furthermore, the lower end of the DC motor is provided with a mounting bracket.

[0015] Furthermore, the rear end of the DC motor is provided with a motor rear cover, which adopts an integrated fully enclosed structure.

[0016] Furthermore, the joint between the rear cover of the motor and the DC motor body is coated with sealant.

[0017] The beneficial effects of this utility model are reflected in:

[0018] In this utility model, a 4.5KW DC motor is specifically used, which is matched with a 5.8mL / r displacement gear pump to achieve large output flow and output pressure.

[0019] The electric emergency steering pump is equipped with a structure including a temperature control switch, a safety valve, and a check valve to ensure reliable operation.

[0020] The motor has a fully enclosed structure with an IP54 protection rating, providing a high level of sealing and protection.

[0021] It is easy to install and arrange on the vehicle, does not require a force tap, and has controllable costs. Attached Figure Description

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

[0023] Figure 2 This utility model Figure 1 Front view and partial sectional view of the structure;

[0024] Figure 3 This utility model Figure 1 Schematic diagram of the bottom structure of the electric emergency steering pump;

[0025] Figure 4 This is a DC motor control diagram for the electric emergency steering pump of this utility model;

[0026] Figure 5 This is a hydraulic schematic diagram of the electric emergency steering pump of this utility model.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. DC motor; 2. Central valve block; 3. Gear pump; 4. Coupling; 5. DC contactor; 6. Temperature control switch; 7. Metal plug; 8. Safety valve; 9. Check valve; 11. Motor output shaft; 12. Motor rear cover; 13. Motor joint; 14. Mounting bracket; 21. Oil outlet P1; 22. Oil outlet P2; 23. Oil return port T; 31. Gear pump shaft extension; 32. Oil inlet. Detailed Implementation

[0029] 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.

[0030] Please see Figure 1-5 This utility model provides an electric emergency steering pump, comprising,

[0031] A DC motor 1 has a motor output shaft 11 and a DC contactor 5 is provided on the DC motor 1. The DC contactor 5 controls the motor to start through a small current, thereby improving safety.

[0032] Gear pump 3, with an internal gear pump shaft extension 31 and an oil inlet 32 ​​on its outer surface, wherein the gear pump shaft extension 31 is connected to the motor output shaft 11 via a coupling 4; and

[0033] The central valve block 2 is located between the DC motor 1 and the gear pump 3, and the outer surface of the central valve block 2 is provided with an oil outlet.

[0034] When this electric emergency steering pump is in use, the DC contactor 5 is energized, the DC motor 1 starts, and drives the gear pump 3 to operate through the coupling 4. The oil inlet 32 ​​draws in oil, and the oil outlet provides pressurized oil to the steering system, thereby ensuring vehicle driving safety.

[0035] In one embodiment, there are two oil outlets, distributed on different sides of the central valve block 2.

[0036] Specifically, the two oil outlets are oil outlet P1 21 and oil outlet P2 22, which are located on different sides of the central valve block 2, making it convenient to arrange oil pipes during vehicle installation.

[0037] In one embodiment, please refer to Figure 3 One of the two oil outlets is in working condition, and the other oil outlet is sealed by a metal screw plug 7.

[0038] In one embodiment, the central valve block 2 is equipped with a safety valve 8 and a return port T 23. This configuration in this embodiment is intended to protect the electric emergency steering pump from damage due to excessive system pressure.

[0039] In one embodiment, a one-way valve 9 is provided on the central valve block 2. This configuration in this embodiment prevents pressure oil from other oil circuits from backflushing against the gear pump 3 on the electric emergency steering pump.

[0040] In one embodiment, the DC motor 1 is equipped with a temperature control switch 6. This configuration allows the switch to automatically disconnect when the motor is used under heavy load for an extended period and the temperature becomes too high, and then automatically close again once the temperature drops, preventing the motor from burning out due to high temperature.

[0041] In one embodiment, the DC motor 1 is provided with a mounting bracket 14 at its lower end. This configuration facilitates installation and fixation during vehicle assembly.

[0042] In one embodiment, the rear end of the DC motor 1 is provided with a motor rear cover 12, which adopts an integrated fully enclosed structure.

[0043] Preferably, sealant is applied to the motor joint 13 between the motor rear cover 12 and the DC motor body.

[0044] This embodiment is designed in this way, and the use of an integrated fully enclosed structure and sealant can improve the motor protection level and avoid safety accidents caused by water leakage.

[0045] In addition, the DC motor 1 in this application is a 4.5KW DC motor, which is matched with a 5.8mL / r displacement gear pump 3, which can achieve large output flow and output pressure;

[0046] The motor has a fully enclosed structure, with a protection rating of IP54.

[0047] The system employs a structure including a temperature control switch (6), a safety valve (8), and a check valve (9) to ensure reliable operation of the electric emergency steering pump. It is easy to install and arrange on the vehicle, requires no force take-off port, and has controllable costs.

[0048] 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.

[0049] 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.

[0050] 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 electric emergency steering pump, characterized in that: include, A DC motor (1) having a motor output shaft (11) and a DC contactor (5) provided on the DC motor (1); A gear pump (3) has an internal gear pump shaft extension (31) and an oil inlet (32) on its outer surface. The gear pump shaft extension (31) is connected to the motor output shaft (11) via a coupling (4). A central valve block (2) is located between the DC motor (1) and the gear pump (3), and an oil outlet is provided on the outer surface of the central valve block (2).

2. The electric emergency steering pump as described in claim 1, characterized in that: The oil outlet is provided in two places, which are distributed on different sides of the central valve block (2).

3. An electric emergency steering pump as described in claim 2, characterized in that: One of the two oil outlets is in operation, and the other oil outlet is sealed by a metal plug (7).

4. An electric emergency steering pump as described in claim 1, characterized in that: The central valve block (2) is equipped with a safety valve (8) and a return oil port.

5. An electric emergency steering pump as described in claim 1, characterized in that: The central valve block (2) is equipped with a one-way valve (9).

6. An electric emergency steering pump as described in claim 1, characterized in that: The DC motor (1) is equipped with a temperature control switch (6).

7. An electric emergency steering pump as described in claim 1, characterized in that: The DC motor (1) is provided with a mounting bracket (14) at its lower end.

8. An electric emergency steering pump as described in claim 1, characterized in that: The DC motor (1) has a motor rear cover (12) at its rear end, and the motor rear cover (12) adopts an integrated fully enclosed structure.

9. An electric emergency steering pump as described in claim 8, characterized in that: The motor joint (13) between the rear cover (12) of the motor and the DC motor body is coated with sealant.

Images