Platform car electric emergency steering system
By adding emergency steering oil circuit and steering switch S1 to the airport lifting platform vehicle, and manually opening the steering function with emergency electric pump and bypass valve, the steering function is solved when the engine cannot be started, ensuring safe evacuation of the vehicle and reducing liquid countercurrent Risk improves the reliability and efficiency of the system.
Patent Information
- Application Number
- CN202421114472.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-05-21
AI Technical Summary
When the engine cannot be started under abnormal environments, the connecting pump cannot work, resulting in the steering function failure, affecting the vehicle's evacuation safe area and the normal operation of the flight, posing safety hazards.
Based on the original vehicle oil supply system and steering control system, the emergency steering oil circuit and steering switch S1 are added, and the emergency electric pump is used as the hydraulic power source to realize the manual steering function through the bypass valve and the one-way valve to ensure the platform vehicle's ability It can still turn to evacuate when the engine cannot start.
It is realized that when the engine cannot be started, the platform vehicle can be evacuated to a safe area in time to avoid affecting the operation of other vehicles and flights in the airport, and prevent liquid countercurrent through a check-way valve, reduce the layout of oil pipelines, and improve system efficiency.
Smart Images
Figure CN222224249U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of vehicle emergency steering, in particular to an electric emergency steering system for a platform vehicle. Background Art
[0002] Airport lift trucks are used to carry and lift cargo in airports. With the in-depth research of the electric industry, existing airport lift trucks have been electrified. Existing electric lift trucks may occasionally fail to start their engines in abnormal environments (high temperature, humidity or low temperature, etc.), requiring manual evacuation. Since the built-in steering function is controlled by its conjoined pump, and the engine supplies power to the conjoined pump, once the engine fails to start, the conjoined pump cannot start either, and the steering function cannot be turned on, causing the platform vehicle to be unable to evacuate to a safe area efficiently. This may affect the operation of other vehicles in the airport at the least, or even occupy the runway and affect flights at the worst, posing certain safety hazards. Utility Model Content
[0003] The utility model provides an electric emergency steering system for a platform vehicle, which is used to solve the problems existing in the prior art.
[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0005] An electric emergency steering system for a platform vehicle comprises a steering switch S1, an emergency electric pump for extracting oil and a bypass valve for adjusting the on-off of an oil circuit, wherein the oil inlet of the emergency electric pump is connected to the hydraulic oil tank of an original vehicle oil supply system, the oil inlet of the bypass valve is connected to the oil outlet of the emergency electric pump via a joint and a valve body, and the oil outlet of the bypass valve is connected to the oil supply trunk of the original vehicle oil supply system via a joint and a valve body; the steering switch S1 is connected in parallel to the steering electric switch 1S58 of the original vehicle steering control system, and the steering switch S1 is connected in series to the drive coil 1K76 of the emergency electric pump.
[0006] Through the above technical solution, the utility model improves on the basis of the original vehicle oil supply system and the original vehicle steering control system, and adds an emergency steering oil circuit and a steering switch S1 without affecting the original functions of the original vehicle, and uses the emergency electric pump as hydraulic power to realize the emergency steering function. Compared with the prior art, when the airport lifting platform vehicle cannot turn, the utility model emergency steering system can turn on the steering function of the airport lifting platform vehicle by closing the steering switch S1, so that the abnormal platform vehicle can be evacuated to a safe area in time to avoid affecting the work of other vehicles in the airport and the normal operation of flights.
[0007] Preferably, it also includes a first three-way joint and a second three-way joint; the first interface of the first three-way joint is connected to the oil input port of the hydraulic valve in the original vehicle's oil supply system, the second interface of the first three-way joint is connected to the oil inlet and outlet of the hydraulic oil filter in the original vehicle's oil supply system, and the third interface of the first three-way joint is connected to the oil outlet of the bypass valve through the valve body; the first interface of the second three-way joint is connected to the oil inlet of the bypass valve, and the second interface of the second three-way joint is connected to the oil outlet of the emergency electric pump through the valve body.
[0008] Preferably, it also includes a first one-way valve and a second one-way valve, the first one-way valve is arranged between the first three-way joint and the bypass valve, the oil inlet of the first one-way valve is connected to the oil outlet of the bypass valve, and the oil outlet of the first one-way valve is connected to the third interface of the first three-way joint; the second one-way valve is arranged between the second three-way joint and the emergency electric pump, the oil inlet of the second one-way valve is connected to the oil outlet of the emergency electric pump, and the oil outlet of the second one-way valve is connected to the second interface of the second three-way joint.
[0009] Preferably, the oil pipeline between the first one-way valve and the bypass valve includes two hoses and a steel pipe, the two hoses are respectively connected to the two ends of the steel pipe, the oil inlet of the first one-way valve is connected to the oil outlet of one of the hoses, and the oil outlet of the bypass valve is connected to the oil inlet of the other hose.
[0010] Preferably, the first one-way valve and the second one-way valve are both tubular one-way valves.
[0011] Preferably, the bypass valve is a steering bypass ball valve.
[0012] Preferably, the steering switch S1 is a knob-type reset switch.
[0013] The beneficial effects of the utility model are:
[0014] 1. Compared with the prior art, when the airport lift platform vehicle cannot turn, the emergency steering system of the utility model can turn on the steering function of the airport lift platform vehicle by closing the steering switch S1, so that the abnormal platform vehicle can be evacuated to a safe area in time to avoid affecting the operation of other vehicles in the airport and the normal operation of flights.
[0015] 2. Compared with the prior art, the first one-way valve and the second one-way valve are added to the oil pipeline of the emergency steering system of the utility model, which can effectively prevent the backflow of liquid in the oil pipeline.
[0016] 3. Compared with the prior art, the first three-way joint and the second three-way joint are arranged on the oil pipeline of the emergency steering system of the utility model, which can minimize the layout of the oil pipeline and realize the combination of the original vehicle fuel supply system and the oil pipeline of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1It is a schematic diagram of the connection between the electric emergency steering system of the platform vehicle and the oil supply system of the original vehicle in the embodiment of the utility model;
[0018] Figure 2 It is a schematic diagram of the connection between the electric emergency steering system of the platform vehicle and the steering control system of the original vehicle in the embodiment of the utility model.
[0019] Description of reference numerals:
[0020] 100. Original vehicle fuel supply system; 101. Hydraulic valve; 102. Hydraulic oil filter; 200. Original vehicle steering control system; 1. Emergency electric pump; 2. Bypass valve; 3. First three-way connector; 4. Second three-way connector; 5. First non-return valve; 6. Second non-return valve; 7. Hose; 8. Steel pipe. DETAILED DESCRIPTION
[0021] The technical solution in this embodiment will be clearly and completely described below in conjunction with the drawings in this embodiment. Obviously, the described embodiment is only a part of the embodiments of the utility model, rather than all the embodiments; based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0022] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.
[0023] This embodiment discloses an electric emergency steering system for a platform vehicle, which is used to solve the problems existing in the prior art.
[0024] Reference Figure 1 and Figure 2 The platform vehicle electric emergency steering system of this embodiment includes a steering switch S1, an emergency electric pump 1, a bypass valve 2, a first three-way connector 3, a second three-way connector 4, a first one-way valve 5 and a second one-way valve 6.
[0025] Among them, Figure 1As shown, the first interface of the first three-way joint 3 is connected to the oil input port of the hydraulic valve 101 in the original vehicle oil supply system 100, the second interface of the first three-way joint 3 is connected to the oil inlet and outlet of the hydraulic oil filter 102 in the original vehicle oil supply system 100, the third interface of the first three-way joint 3 is connected to the oil outlet of the first check valve 5, and the oil inlet of the first check valve 5 is connected to the oil outlet of the bypass valve 2. The first interface of the second three-way joint 4 is connected to the oil inlet of the bypass valve 2, the second interface of the second three-way joint 4 is connected to the oil outlet of the second check valve 6, the second check valve 6 is connected to the oil outlet of the emergency electric pump 1, and the oil inlet of the emergency electric pump 1 is connected to the hydraulic oil tank of the original vehicle oil supply system 100.
[0026] Through the above technical solution, without affecting the original functions of the original vehicle, the original vehicle's own emergency electric pump 1 is used to add an emergency steering oil circuit to the original vehicle's oil supply system 100. When the emergency electric pump 1 is running and the bypass valve 2 is opened, the oil is pumped into the hydraulic valve 101 in the original vehicle's oil supply system 100 along the oil circuit to drive the steering gear of the platform vehicle. The first one-way valve 5 and the second one-way valve 6 in the above oil circuit can effectively prevent the backflow of liquid in the oil pipeline, and the first three-way joint 3 and the second three-way joint 4 in the above oil circuit can minimize the layout of the oil pipeline, realizing the combination of the original vehicle's oil supply system 100 and the oil pipeline of the utility model.
[0027] In this embodiment, the bypass valve 2 adopts a steering bypass ball valve, which is equipped with a rotating handle and can be manually selectively opened or closed. The third interface of the second three-way connector 4 is connected to the original oil outlet route of the original vehicle oil supply system 100. The first check valve 5 and the second check valve 6 are both tubular check valves, which can adapt to the reserved space of the pipeline of the platform vehicle to facilitate the delivery of hydraulic oil. The above-mentioned emergency electric pump 1 has a special distribution box for independent power supply.
[0028] Preferably, the oil pipeline between the first one-way valve 5 and the bypass valve 2 includes two hoses 7 and a steel pipe 8, the two hoses 7 are respectively connected to the two ends of the steel pipe 8, the oil inlet of the first one-way valve 5 is connected to the oil outlet of one of the hoses 7, and the oil outlet of the bypass valve 2 is connected to the oil inlet of the other hose 7.
[0029] Through the above technical solution, the two hoses 7 and the steel pipe 8 are provided to facilitate the installation of the oil pipeline of the emergency steering system of the utility model.
[0030] In this embodiment, the steel pipe 8 is a seamless steel pipe 8 to avoid liquid leakage.
[0031] like Figure 2As shown, the steering switch S1 is connected in parallel with the steering electric switch 1S58 of the original vehicle steering control system 200, and the steering switch S1 is connected in series with the drive coil 1K76 of the emergency electric pump 1. In this embodiment, the steering switch S1 adopts a knob-type reset switch and is installed on the driving panel of the platform vehicle.
[0032] It should be explained that the above-mentioned electric steering switch 1S58 is triggered by the engine matched with the original vehicle steering control system 200. When the engine is successfully started, the electric steering switch 1S58 will be closed.
[0033] It should be explained that if the steering switch S1 is closed and the bypass valve 2 is open, the oil is input into the hydraulic valve 101, and the hydraulic valve 101 drives the steering gear to rotate in one direction; conversely, if the steering switch S1 is opened or the bypass valve 2 is closed, the hydraulic valve 101 disconnects the hydraulic enable, at this time, the steering gear maintains the original steering or resets the steering to the initial position.
[0034] Compared with the prior art, the utility model is improved on the basis of the original vehicle steering control system 200. When the engine cannot be started normally and the steering function of the platform vehicle cannot be automatically turned on, the steering switch S1 can be closed and the steering function of the airport lifting platform vehicle can be manually turned on, so that the abnormal platform vehicle can be evacuated to a safe area in time to avoid affecting the operation of other vehicles in the airport and the normal operation of flights.
[0035] The operation method of this embodiment is:
[0036] (1) After a vehicle failure, first complete all previous emergency actions (platform lowering, cargo pushing away, outrigger retracting, handbrake release, travel pump bypass valve 2 opening and connecting towing vehicle);
[0037] (2) Open bypass valve 2 counterclockwise;
[0038] (3) Turn on the ignition switch of the original vehicle steering control system 200 to the ACC position;
[0039] (4) When the direction needs to be adjusted during the towing process, the driver turns the steering switch S1 to the left with his left hand and steers with his right hand. After adjusting the direction, release the steering switch S1;
[0040] (5) After the vehicle has evacuated to a safe area, all switches are reset.
[0041] The working principle of this embodiment is:
[0042] The emergency electric pump 1 is used as the hydraulic power source, and a steering switch S1 is installed on the driving panel of the platform vehicle to control the operation of the emergency electric pump 1. A branch oil circuit is connected in parallel to the oil outlet pipeline of the emergency electric pump 1. The oil passes through the second three-way joint 4 to the bypass valve 2, and then to the first one-way valve 5 and then to the hydraulic valve 101. After passing through the hydraulic valve 101, the oil reaches the steering gear and enters the P port, so that the steering wheel can be easily turned.
[0043] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.
Claims
1. An electric emergency steering system for a platform vehicle, characterized in that: The invention comprises a steering switch S1, an emergency electric pump (1) for extracting oil, and a bypass valve (2) for adjusting the on-off of an oil circuit, wherein the oil inlet of the emergency electric pump (1) is connected to the hydraulic oil tank of the original vehicle oil supply system (100), the oil inlet of the bypass valve (2) is connected to the oil outlet of the emergency electric pump (1) through a joint and a valve body, and the oil outlet of the bypass valve (2) is connected to the oil supply main circuit of the original vehicle oil supply system (100) through a joint and a valve body; the steering switch S1 is connected in parallel to the steering electric switch 1S58 of the original vehicle steering control system (200), and the steering switch S1 is connected in series to the drive coil 1K76 of the emergency electric pump (1).
2. The platform vehicle electric emergency steering system according to claim 1, characterized in that: It also comprises a first three-way joint (3) and a second three-way joint (4); the first interface of the first three-way joint (3) is connected to the oil input port of the hydraulic valve (101) in the original vehicle oil supply system (100), the second interface of the first three-way joint (3) is connected to the oil inlet and outlet of the hydraulic oil filter (102) in the original vehicle oil supply system (100), and the third interface of the first three-way joint (3) is connected to the oil outlet of the bypass valve (2) through the valve body; the first interface of the second three-way joint (4) is connected to the oil inlet of the bypass valve (2), and the second interface of the second three-way joint (4) is connected to the oil outlet of the emergency electric pump (1) through the valve body.
3. The platform vehicle electric emergency steering system according to claim 2, characterized in that: It also comprises a first one-way valve (5) and a second one-way valve (6), wherein the first one-way valve (5) is arranged between the first three-way joint (3) and the bypass valve (2), the oil inlet of the first one-way valve (5) is connected to the oil outlet of the bypass valve (2), and the oil outlet of the first one-way valve (5) is connected to the third interface of the first three-way joint (3); the second one-way valve (6) is arranged between the second three-way joint (4) and the emergency electric pump (1), the oil inlet of the second one-way valve (6) is connected to the oil outlet of the emergency electric pump (1), and the oil outlet of the second one-way valve (6) is connected to the second interface of the second three-way joint (4).
4. The platform vehicle electric emergency steering system according to claim 3, characterized in that: The oil pipeline between the first one-way valve (5) and the bypass valve (2) comprises two hoses (7) and a steel pipe (8), the two hoses (7) are respectively connected to the two ends of the steel pipe (8), the oil inlet of the first one-way valve (5) is connected to the oil outlet of one of the hoses (7), and the oil outlet of the bypass valve (2) is connected to the oil inlet of the other hose (7).
5. The platform vehicle electric emergency steering system according to claim 3, characterized in that: The first one-way valve (5) and the second one-way valve (6) are both tubular one-way valves.
6. The platform vehicle electric emergency steering system according to claim 1, characterized in that: The bypass valve (2) is a steering bypass ball valve.
7. The platform vehicle electric emergency steering system according to claim 1, characterized in that: The steering switch S1 is a knob-type reset switch.