CN222010624U - Electric control hydraulic lifting control system for heavy-duty car - Google Patents
Electric control hydraulic lifting control system for heavy-duty car Download PDFInfo
- Publication number
- CN222010624U CN222010624U CN202420079788.9U CN202420079788U CN222010624U CN 222010624 U CN222010624 U CN 222010624U CN 202420079788 U CN202420079788 U CN 202420079788U CN 222010624 U CN222010624 U CN 222010624U
- Authority
- CN
- China
- Prior art keywords
- hydraulic
- lifting
- heavy
- controller
- control system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
本实用新型所述的一种重型汽车电控液压提升控制系统，属于提升桥控制技术领域，包括控制器，控制器通过硬线控制连接有操作开关、升降电机总成、油压开关及二位四通电磁换向阀；升降电机总成与控制器之间连接有提升桥继电器；升降电机总成与二位四通电磁换向阀通过连通液压油箱的液压齿轮泵连接；油压开关与液压齿轮泵相接；二位四通电磁换向阀分别通过液压锁A和液压锁B连通液压缸的有杆腔和无杆腔。本系统不需要仪表控制，仅通过对控制器操作即可，简化了控制逻辑，节约了成本；仅需对操作开关操作就可以实现该系统的控制，控制方式简单，便于操作；系统上升或下降到位时，系统压力增加，油压开关断开，减少了传感器的数量。
The utility model discloses a heavy-duty vehicle electronically controlled hydraulic lifting control system, which belongs to the field of lifting bridge control technology, and includes a controller, which is connected to an operating switch, a lifting motor assembly, an oil pressure switch and a two-position four-way electromagnetic reversing valve through hard-line control; a lifting bridge relay is connected between the lifting motor assembly and the controller; the lifting motor assembly and the two-position four-way electromagnetic reversing valve are connected through a hydraulic gear pump connected to a hydraulic oil tank; the oil pressure switch is connected to the hydraulic gear pump; the two-position four-way electromagnetic reversing valve is connected to the rod chamber and the rodless chamber of the hydraulic cylinder through hydraulic lock A and hydraulic lock B respectively. This system does not require instrument control, and can be operated only by operating the controller, which simplifies the control logic and saves costs; the control of the system can be realized by operating the operating switch, and the control method is simple and easy to operate; when the system rises or falls into place, the system pressure increases, the oil pressure switch is disconnected, and the number of sensors is reduced.
Description
Technical Field
The utility model belongs to the technical field of lifting bridge control, and particularly relates to an electric control hydraulic lifting control system of a heavy-duty car.
Background
The heavy-duty car refers to M-class and N-class cars with the maximum total mass greater than 3500 Kg. This type of car is a train of cars consisting of heavy tractors and heavy trailers. Automobiles of this type typically employ a mostly axle-in-series hydraulic suspension, typically for carrying large cargo items having dimensions and weights exceeding the limits imposed by highway traffic regulations.
With the rapid development of the requirements of heavy automobiles, the transportation vehicles are developed to a high-speed heavy-duty direction, and the application of the lifting bridge on the heavy automobiles is more and more wide. The lifting bridge type is a special type of a 6 multiplied by 2 heavy-duty car, wherein the rear axle can be lifted off the ground when in no-load or light-load, so that the abrasion of tires is reduced, and the oil consumption is reduced. The electric control hydraulic control mode realizes the lifting and descending operation of the lifting bridge, so that the overall performance and the service quality of the vehicle are improved.
The hydraulic lifting control system is widely applied to heavy automobiles, the control and logic of the hydraulic lifting control system are complex, the existing control system mainly adopts a lifting switch and a descending switch to output signals to an instrument, the instrument sends signals to a controller through a CAN bus, and then the controller controls the hydraulic lifting system to work so as to realize lifting of a lifting bridge.
This patent mainly solves the automatically controlled problem that 6X2 promotes bridge rear axle promoted. The system adopts hard wires and a controller for control, simplifies control logic, saves cost and is convenient to operate and maintain while ensuring functions.
Disclosure of utility model
The utility model provides an electric control hydraulic lifting control system for a heavy-duty car, which aims to solve the problems that a control system for controlling lifting operation of a lifting bridge is complex in structure and inconvenient to operate.
The utility model is realized by the following technical scheme:
The electric control hydraulic lifting control system of the heavy-duty car comprises a controller, wherein the controller is connected with an operation switch, a lifting motor assembly, an oil pressure switch and a two-position four-way electromagnetic reversing valve through hard wire control;
A lifting bridge relay is connected between the lifting motor assembly and the controller; the lifting motor assembly is connected with the two-position four-way electromagnetic reversing valve through a hydraulic gear pump communicated with a hydraulic oil tank;
the oil pressure switch is connected with the hydraulic gear pump;
the two-position four-way electromagnetic reversing valve is communicated with a rod cavity and a rodless cavity of the hydraulic cylinder through the hydraulic lock A and the hydraulic lock B respectively.
The utility model further improves that the lifting motor assembly comprises a lifting motor body, and the lifting motor body is provided with a motor self-contained delay relay.
The utility model further improves that the motor is also connected with a safety device by the delay relay.
The utility model further improves that a reversing electromagnetic valve capable of controlling the two-position four-way electromagnetic reversing valve is connected between the controller and the two-position four-way electromagnetic reversing valve.
The utility model further improves that a reversing valve relay is arranged between the reversing electromagnetic valve and the controller.
The utility model further improves that an adjustable pressure controller is arranged between the oil pressure switch and the hydraulic gear pump.
The utility model further improves that a filter capable of filtering oil is arranged between the hydraulic gear pump and the hydraulic oil tank.
The utility model further improves that the overflow valve is arranged on a pipeline between the hydraulic gear pump and the two-position four-way electromagnetic reversing valve.
Further improvement of the utility model is that the outlet pipeline of the overflow valve is communicated with the hydraulic oil tank.
In a further improvement of the utility model, the operation switch is provided with three gears, namely an ascending gear, a disconnecting gear and a descending gear.
From the technical scheme, the beneficial effects of the utility model are as follows: 1. the system adopts hard wire control, reduces the logic of CAN wires and simplifies the control logic.
2. The system does not need instrument control, only needs to operate the controller, simplifies control logic and saves cost.
3. The control of the system can be realized only by operating the operation switch, the control mode is simple, and the operation is convenient.
4. When the pressure of the system is overloaded, the oil pressure switch is disconnected, and after the oil pressure switch is continuously disconnected for 2 seconds, the lifting bridge relay is disconnected, so that the system is prevented from directly stopping working when the pressure is overloaded, and the service life of the system is prolonged.
5. When the system rises or falls in place, the pressure of the system is increased, the oil pressure switch is disconnected, and the number of sensors is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the present utility model, the drawings that are needed in the description will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of an electronically controlled hydraulic system in accordance with an embodiment of the present utility model.
Fig. 2 is a diagram of an electric control method of a hydraulic system at lifting according to an embodiment of the present utility model.
Fig. 3 is a diagram of an electric control method of the hydraulic system during descent according to the embodiment of the present utility model.
In the accompanying drawings: 1. a controller; 2. an operation switch; 3. a lifting motor assembly; 301. a lifting motor body; 302. the motor is provided with a delay relay; 303. a safety device; 4. an oil pressure switch; 401. an adjustable pressure controller; 5. two-position four-way electromagnetic reversing valve; 501. a reversing electromagnetic valve; 502. a reversing valve relay; 6. a lifting bridge relay; 7. a hydraulic gear pump; 701. a filter; 702. an overflow valve; 8. a hydraulic cylinder; 801. a hydraulic lock A; 802. and a hydraulic lock B.
Detailed Description
In order to make the objects, features and advantages of the present utility model more obvious and understandable, the technical solutions of the present utility model will be clearly and completely described below with reference to the drawings in this specific embodiment, and it is apparent that the embodiments described below are only some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, based on the embodiments in this patent, which would be within the purview of one of ordinary skill in the art without the particular effort to make the utility model are intended to be within the scope of the patent protection.
As shown in figures 1-3, the electric control hydraulic lifting control system of the heavy-duty car comprises a controller 1, wherein the controller 1 is connected with an operation switch 2, a lifting motor assembly 3, an oil pressure switch 4 and a two-position four-way electromagnetic reversing valve 5 through hard wire control. The operating switch 2 is provided with three gears, namely an ascending gear, a disconnecting gear and a descending gear.
A lifting bridge relay 6 is connected between the lifting motor assembly 3 and the controller 1; the lifting motor assembly 3 comprises a lifting motor body 301, and the lifting motor body 301 is provided with a motor self-carrying delay relay 302. The motor is also connected with a safety device 303 by the delay relay 302. The lifting motor assembly 3 is connected with the two-position four-way electromagnetic reversing valve 5 through a hydraulic gear pump 7 communicated with a hydraulic oil tank; the two-position four-way electromagnetic directional valve 5 is communicated with a rod cavity and a rodless cavity of the hydraulic cylinder 8 through a hydraulic lock A801 and a hydraulic lock B802 respectively. A reversing electromagnetic valve 501 capable of controlling the two-position four-way electromagnetic reversing valve 5 is connected between the controller 1 and the two-position four-way electromagnetic reversing valve 5. A reversing valve relay 502 is also arranged between the reversing solenoid valve 501 and the controller 1.
The oil pressure switch 4 is connected with the hydraulic gear pump 7; an adjustable pressure controller 401 is also arranged between the oil pressure switch 4 and the hydraulic gear pump 7.
A filter 701 capable of filtering oil is further arranged between the hydraulic gear pump 7 and the hydraulic oil tank. And an overflow valve 702 is arranged on a pipeline of the hydraulic gear pump 7 communicated with the two-position four-way electromagnetic directional valve 5. The outlet line of the relief valve 702 communicates with a hydraulic tank.
Working principle:
When the key switch is closed, the lifting bridge ascending switch is closed, the lifting bridge descending switch is opened (the lifting bridge is adjusted to an ascending gear), the switch outputs an ascending level signal to the controller 1, the controller 1 drives the lifting bridge relay 6 to output, the motor is controlled to work by the self-carrying delay relay 302, the normally open switch of the motor self-carrying delay relay 302 is closed, the power supply forms a loop with the lifting motor body 301 from the self-carrying delay relay 302 through the safety device 303, and the lifting motor body 301 drives the hydraulic gear pump 7 to start working. When the lifting bridge rises in place, the system pressure is increased, and when a signal set by the pressure sensor is reached, the pressure sensor outputs a signal to the controller 1, the controller 1 controls the lifting bridge oil pressure switch 4 to be switched off, a driver is reminded of lifting in place, and the driver switches off the lifting bridge lifting switch; if the driver does not receive the prompt to turn off the lifting bridge ascending switch or cannot turn off the lifting bridge ascending switch, the lifting bridge oil pressure switch 4 is continuously turned off, and when the lifting bridge oil pressure switch 4 is continuously turned off for 2 seconds, the lifting bridge relay 6 is turned off, and the system stops working (namely, is adjusted to be in an off gear).
When the key switch is closed, the lifting bridge descending switch is closed and the lifting bridge ascending switch is opened (the lifting bridge ascending switch is adjusted to the descending gear), the switch outputs a high-level signal to the controller 1, the controller 1 drives the reversing valve relay 502 to output, the reversing electromagnetic valve 501 works, after the reversing electromagnetic valve 501 outputs 2 seconds, the controller 1 immediately drives the lifting bridge relay 6 and the reversing electromagnetic valve 501 to output, the motor self-provided delay relay 302 works, the normally open switch of the motor self-provided delay relay 302 is closed, the power supply forms a loop with the lifting motor body 301 through the safety device 303 to the motor self-provided delay relay 302, and the lifting motor body 301 drives the hydraulic gear pump 7 to start working. In the lifting bridge descending process, if the key switch is disconnected, the lifting bridge descending switch is disconnected, the lifting bridge relay 6 is in short circuit to ground, and the lifting bridge reversing electromagnetic valve 501 is in short circuit to ground, the lifting bridge relay 6 is immediately disconnected, and the system stops working. When the lifting bridge descends in place, the system pressure is increased, and when a signal set by the pressure sensor is reached, the pressure sensor outputs a signal to the controller 1, the controller 1 controls the lifting bridge oil pressure switch 4 to be switched off, a driver is reminded of lifting in place, and the driver switches off the lifting bridge descending switch; if the driver does not receive the prompt to turn off the lifting bridge descending switch or cannot turn off the lifting bridge descending switch, the lifting bridge oil pressure switch 4 is continuously turned off, and when the lifting bridge oil pressure switch 4 is continuously turned off for 2 seconds, the lifting bridge relay 6 is turned off, and the system stops working (namely, is adjusted to be in an off gear).
The system feeds back the pressure through the pressure sensor, when the system has fault pressure overload, the pressure is automatically released through the overflow valve 702, meanwhile, the pressure sensor outputs a signal to the controller 1, the controller 1 controls the lifting bridge oil pressure switch 4 to be opened, after the fault is relieved, the pressure sensor stops outputting the signal when the pressure reaches below the set pressure, the controller 1 stops outputting the lifting bridge oil pressure switch 4, the lifting bridge oil pressure switch 4 is closed, if the fault continuously exists, the system pressure is always overloaded, the lifting bridge oil pressure switch 4 is continuously opened, the lifting bridge relay 6 is opened when the lifting bridge oil pressure switch 4 is continuously opened for 2 seconds, and the system stops working.
The working principle of the hydraulic lifting control system is that after the hydraulic lifting control system is electrified, the lifting motor body 301 rotates to enable hydraulic oil in an oil tank to reach the hydraulic gear pump 7 through the filter 701. When lifting, oil enters the rodless cavity of the hydraulic cylinder 8 through the hydraulic lock B802, the oil with the rod cavity of the hydraulic cylinder 8 flows back to the oil tank through the hydraulic lock A801 and the two-position four-way electromagnetic reversing valve 5, after the hydraulic gear pump 7 stops working, the hydraulic lock A801 and the hydraulic lock B802 play a role in maintaining pressure, so that the hydraulic cylinder 8 maintains the current situation, the space of the rodless cavity of the hydraulic cylinder 8 is increased, the connecting rod is controlled to move upwards, and lifting of a lifting bridge is realized. When the hydraulic pump 7 descends, oil in the hydraulic pump 7 enters the rod cavity of the hydraulic cylinder 8 through the hydraulic lock A801, the oil in the rod-free cavity of the hydraulic cylinder 8 flows back to the oil tank through the hydraulic lock B802, after the hydraulic pump 7 stops working, the hydraulic lock A801 and the hydraulic lock B802 maintain pressure, so that the hydraulic cylinder 8 maintains the current situation, the rod-free cavity space of the hydraulic cylinder 8 is reduced, the connecting rod is controlled to move downwards, and the descending of the lifting bridge is realized.
The electric control hydraulic lifting control system of the heavy-duty car, disclosed by the utility model, has the advantages that 1, the system adopts hard wire control, the logic of a CAN (controller area network) wire is reduced, and the control logic is simplified; 2. the system does not need instrument control, only needs to operate the controller, simplifies control logic and saves cost; 3. the control of the system can be realized only by operating the operation switch, the control mode is simple, and the operation is convenient; 4. when the pressure of the system is overloaded, the oil pressure switch is disconnected, and after the oil pressure switch is continuously disconnected for 2 seconds, the lifting bridge relay is disconnected, so that the system is prevented from directly stopping working when the pressure is overloaded, and the service life of the system is prolonged; 5. when the system rises or falls in place, the pressure of the system is increased, the oil pressure switch is disconnected, and the number of sensors is reduced.
In the present specification, each embodiment is described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same and similar parts between the embodiments are only required to be referred to each other.
The terms "upper", "lower", "outside", "inside", and the like in the description and in the claims of the present utility model and in the above drawings, if any, are used for distinguishing between relative relationships in position and not necessarily for giving qualitative sense. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420079788.9U CN222010624U (en) | 2024-01-11 | 2024-01-11 | Electric control hydraulic lifting control system for heavy-duty car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420079788.9U CN222010624U (en) | 2024-01-11 | 2024-01-11 | Electric control hydraulic lifting control system for heavy-duty car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222010624U true CN222010624U (en) | 2024-11-15 |
Family
ID=93426930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420079788.9U Active CN222010624U (en) | 2024-01-11 | 2024-01-11 | Electric control hydraulic lifting control system for heavy-duty car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222010624U (en) |
-
2024
- 2024-01-11 CN CN202420079788.9U patent/CN222010624U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203427875U (en) | Steering system of heavy commercial automobile | |
| CN112249985B (en) | Potential energy recycling system of combined electric forklift | |
| CN108162948B (en) | Braking module for intelligent anti-collision safety system of commercial vehicle | |
| CN111645472B (en) | Control method of truck suspension variable stiffness auxiliary device | |
| CN106114486A (en) | A kind of ABS electric-controlled relay valve | |
| CN222010624U (en) | Electric control hydraulic lifting control system for heavy-duty car | |
| CN203864675U (en) | Hydraulic braking system for mining dump trucks | |
| CN201753040U (en) | Packing case lifting safety control device | |
| CN202743000U (en) | Electric control device for articulated passenger cars | |
| CN117601828A (en) | Brake system for engineering vehicle and mining dump truck | |
| CN207916833U (en) | A kind of commercial car intelligent anticollision security system brake module | |
| CN216617798U (en) | Combined oil pump with automatic reversing function | |
| CN213112313U (en) | Single-winch modified double-winch system based on automobile hydraulic crane | |
| CN205098183U (en) | Parking brake system and vehicle | |
| CN203543675U (en) | Automobile axle with separation device | |
| CN201395129Y (en) | Control valve of hydraulic retarder | |
| CN221113866U (en) | Braking system of trackless rubber-tyred vehicle | |
| CN218509828U (en) | Hydraulic-electric system for dustbin | |
| KR100691425B1 (en) | Device that prevents force from being transmitted to the spring of the suspension device | |
| CN210191654U (en) | Cab mechanical locking mechanism with right side opening | |
| CN210234934U (en) | Downhill automatic speed reducing device of underground mine trackless equipment | |
| CN215042707U (en) | Braking system for underground mining trackless vehicle | |
| CN204588650U (en) | Protection system is made in the translation of telescopic arm forklift side | |
| CN221316356U (en) | Unmanned steering hydraulic system and engineering vehicle | |
| CN2767227Y (en) | Follow-up steering hoisting bridge suspension mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |