Beam transporting vehicle walking energy-saving control method and system

Abstract

The invention relates to the technical field of beam transporting vehicle walking systems, in particular to a beam transporting vehicle energy-saving control method and system based on working condition classification. Under different working conditions of the girder transporting vehicle, linear coupling control can be carried out on the rotating speed of the diesel engine and the displacement of the hydraulic system at the same time, the displacement of the hydraulic system is matched with the power of the diesel engine, and compared with a fixed rotating speed control mode of a traditional girder transporting vehicle, the problem that the displacement of the hydraulic system is low can be effectively solved. The problem of over-high rotating speed of the diesel engine is solved, so that energy loss and waste are avoided; the working conditions of the beam transporting vehicle under different conditions are distinguished, the rotating speed of the diesel engine under different working conditions is adjusted in real time through linear coupling control over the displacement of the diesel engine and the pump, the energy utilization efficiency of the beam transporting vehicle can be greatly improved, the overall using economical efficiency of equipment is improved, and the application prospect is wide.

Description

Technical Field

[0001] The present invention relates to the technical field of beam transport vehicle running systems, and in particular to an energy-saving control method and system for a beam transport vehicle based on working condition classification. Background Art

[0002] The beam transporter is an important equipment for transporting box beams in railway construction. The beam transporter's running system is equipped with a closed hydraulic pump, and the diesel engine throttle is controlled by the engine ECU. The driver usually manually adjusts the diesel engine speed to the rated speed and operates the relevant switch handle to drive the beam transporter. The beam transporter controller outputs a proportional voltage according to the given signal of the operating handle to control the opening of the proportional valve of the hydraulic running drive pump, thereby controlling the running speed of the beam transporter.

[0003] When the beam transport vehicle in the prior art is working, the traveling motor needs to be supplied with oil, and the steering and suspension systems may work at any time and also need to be supplied with oil. In order to ensure the oil supply of the hydraulic system oil pump and make the beam transport vehicle work stably, the diesel engine speed of the beam transport vehicle is maintained at a relatively high constant value during normal operation regardless of the operating conditions, resulting in serious energy loss of the beam transport vehicle, causing energy waste and reducing the overall economic efficiency of the beam transport vehicle. Summary of the invention

[0004] The technical problem to be solved by the present invention is: in view of the shortcomings of the existing technology, a method and system for energy-saving control of the travel of a beam transport vehicle is provided, which can perform linear coupling control on the diesel engine speed and the hydraulic system displacement under different working conditions of the beam transport vehicle, so that the hydraulic system displacement and the diesel engine power are matched with each other, thereby effectively improving the energy utilization efficiency of the travel system of the beam transport vehicle and realizing energy saving and emission reduction of the system.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] 1. A method for energy-saving control of beam transport vehicle travel

[0007] The present invention provides a beam transport vehicle running energy-saving control method, which mainly includes the following steps:

[0008] S1, detect the actual working condition of the beam transport vehicle;

[0009] S2, linearly couples the diesel engine speed to the hydraulic system displacement;

[0010] S3, determining the engine power range under the current working condition according to the actual working condition parameters of the beam transport vehicle;

[0011] S4, setting a speed control range of the diesel engine under the current working condition according to the engine power range under the current working condition;

[0012] S5, within the speed control range, the speed of the diesel engine and the displacement of the hydraulic system are linearly and automatically controlled simultaneously.

[0013] Furthermore, in step S1, the actual working conditions of the beam transport vehicle include: standby working condition, traveling working condition, loading and unloading working condition;

[0014] The actual working condition of the beam transport vehicle is determined by detecting the input signal of the beam transport vehicle controller:

[0015] When the movement of the traveling mechanism of the beam transport vehicle is detected, it is determined that the vehicle is currently in the traveling state;

[0016] When it is detected that the traveling mechanism of the beam transport vehicle is not in motion and the outriggers are extended, it is determined that the current state is loading and unloading;

[0017] When it is detected that the traveling mechanism of the beam transport vehicle is not moving and the outriggers are not extended, it is determined that the vehicle is currently in standby mode.

[0018] Furthermore, in step S2, linearly coupling the diesel engine speed and the hydraulic system displacement includes:

[0019] The operating handle is linearly controlled to output a linear control current, so that the opening of the proportional valve of the hydraulic system driving pump is linearly proportional to the control current; at the same time, the control parameters of the beam transport vehicle controller for linearly controlling the diesel engine speed are adjusted to couple the diesel engine speed with the opening of the proportional valve of the driving pump to meet the following requirements:

[0020] When the operating handle is at the linear starting point, the proportional valve opening of the driving pump and the speed of the diesel engine are both at the linear control starting point;

[0021] When the operating handle is at the linear end point, the proportional valve opening of the drive pump and the speed of the diesel engine reach the linear control end point position at the same time.

[0022] Further, in step S3, determining the engine power range under the current working condition according to the actual working condition parameters of the beam transport vehicle specifically includes:

[0023] When the beam transport vehicle is in the running condition, the minimum value of the engine power under the current condition is calculated and determined by multiplying the minimum power required when the beam transport vehicle's running mechanism, steering mechanism, and suspension mechanism work simultaneously by the correction factor 1, and the maximum value of the engine power under the current condition is calculated and determined by multiplying the rated power when the beam transport vehicle's running mechanism, steering mechanism, and suspension mechanism work simultaneously by the correction factor 2;

[0024] When the beam transport vehicle is in loading and unloading condition, the engine power range under the current condition is calculated and determined by multiplying the working power range of the outrigger mechanism by the correction factor three;

[0025] When the beam transport vehicle is in standby mode, the engine power range under the current operating conditions is a preset range determined according to the beam transport vehicle parameters.

[0026] Furthermore, in step S4, the setting of the speed control range of the diesel engine under the current working condition specifically includes:

[0027] The control parameters of the beam transport vehicle controller that linearly controls the speed of the diesel engine are adjusted according to the coupling, and combined with the engine power range under the current working conditions to determine the speed range of the diesel engine corresponding to the engine power range.

[0028] Furthermore, in step S5, the simultaneous linear automatic control of the diesel engine speed and the hydraulic system displacement specifically includes:

[0029] Determine the starting and ending points of the linear speed control of the diesel engine according to the engine power range under the current working conditions;

[0030] According to the linear coupling relationship between the diesel engine speed and the hydraulic system displacement, the starting point and the end point of the linear control of the proportional valve opening of the driving pump are determined, and then the output range of the control current is calculated;

[0031] According to the output range of the control current, the linear control interval of the operating handle is determined, and the beam transport vehicle controller is switched to the automatic speed control mode to adjust the speed of the diesel engine and the displacement of the hydraulic system in real time according to the output signal of the operating handle.

[0032] Wherein, when the beam transport vehicle is in the moving condition, the speed control range of the diesel engine is 1800-2100rpm;

[0033] When the beam transport vehicle is in loading and unloading condition, the speed control range of the diesel engine is 900-1100rpm;

[0034] When the beam transport vehicle is in standby mode, the speed control range of the diesel engine is 800-1000rpm.

[0035] 2. A beam transport vehicle travel energy-saving control system

[0036] Based on the same inventive concept, the present invention also provides a beam transport vehicle running energy-saving control system using the above control method, comprising:

[0037] Traveling mechanism: used to drive the beam transport vehicle to move in a straight line;

[0038] Steering mechanism: used to drive the beam transport vehicle to turn;

[0039] Outrigger mechanism: used to support the beam transport vehicle body when loading and unloading box beams;

[0040] The beam transport vehicle controller is used to collect the status signals of the traveling mechanism, steering mechanism and outrigger mechanism in real time to judge the actual working condition of the beam transport vehicle, and simultaneously perform linear automatic control on the speed of the diesel engine and the displacement of the hydraulic system.

[0041] Compared with the prior art, the present invention has the following main advantages:

[0042] 1. The present invention provides a beam transport vehicle running energy-saving control method and system, which can simultaneously perform linear coupling control on the diesel engine speed and the hydraulic system displacement under different working conditions of the beam transport vehicle, so that the hydraulic system displacement and the diesel engine power are matched with each other. Compared with the traditional beam transport vehicle fixed speed control method, it can effectively solve the problem of excessively high speed of the diesel engine when the hydraulic system displacement is low, thereby avoiding energy loss and waste;

[0043] 2. The present invention distinguishes the working conditions of the beam transport vehicle under different conditions, and adjusts the diesel engine speed under different working conditions in real time through linear coupling control of the diesel engine and pump displacement, which can greatly improve the energy utilization efficiency of the beam transport vehicle and improve the overall economic efficiency of the equipment, and has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is an overall flow chart of the energy-saving control method for the beam transport vehicle in the embodiment of the present invention;

[0045] Figure 2 Schematic diagram of the corresponding relationship between the speed and power of a diesel engine in an embodiment of the present invention. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0047] It should be pointed out that, according to the needs of implementation, the various steps / components described in this application can be split into more steps / components, and two or more steps / components or partial operations of steps / components can be combined into new steps / components to achieve the purpose of the present invention.

[0048] Embodiment 1: This embodiment provides a method for controlling the energy saving of a beam transport vehicle. Figure 1 As shown, it mainly includes the following steps:

[0049] S1, detect the actual working condition of the beam transport vehicle;

[0050] S2, linearly couples the diesel engine speed to the hydraulic system displacement;

[0051] S3, determining the engine power range under the current working condition according to the actual working condition parameters of the beam transport vehicle;

[0052] S4, setting a speed control range of the diesel engine under the current working condition according to the engine power range under the current working condition;

[0053] S5, within the speed control range, the speed of the diesel engine and the displacement of the hydraulic system are linearly and automatically controlled simultaneously.

[0054] Furthermore, in step S1, the actual working conditions of the beam transport vehicle include: standby working condition, traveling working condition, loading and unloading working condition;

[0055] The actual working condition of the beam transport vehicle is determined by detecting the input signal of the beam transport vehicle controller:

[0056] When the movement of the traveling mechanism of the beam transport vehicle is detected, it is determined that the vehicle is currently in the traveling state;

[0057] When it is detected that the traveling mechanism of the beam transport vehicle is not in motion and the outriggers are extended, it is determined that the current state is loading and unloading;

[0058] When it is detected that the traveling mechanism of the beam transport vehicle is not moving and the outriggers are not extended, it is determined that the vehicle is currently in standby mode.

[0059] Furthermore, in step S2, linearly coupling the diesel engine speed and the hydraulic system displacement includes:

[0060] The operating handle is linearly controlled to output a linear control current, so that the opening of the proportional valve of the hydraulic system driving pump is linearly proportional to the control current; at the same time, the control parameters of the beam transport vehicle controller for linearly controlling the diesel engine speed are adjusted to couple the diesel engine speed with the opening of the proportional valve of the driving pump to meet the following requirements:

[0061] When the operating handle is at the linear starting point, the proportional valve opening of the driving pump and the speed of the diesel engine are both at the linear control starting point;

[0062] When the operating handle is at the linear end point, the proportional valve opening of the drive pump and the speed of the diesel engine reach the linear control end point position at the same time.

[0063] Further, in step S3, determining the engine power range under the current working condition according to the actual working condition parameters of the beam transport vehicle specifically includes:

[0064] When the beam transport vehicle is in the running condition, the minimum value of the engine power under the current condition is calculated and determined by multiplying the minimum power required when the beam transport vehicle's running mechanism, steering mechanism, and suspension mechanism work simultaneously by the correction factor 1, and the maximum value of the engine power under the current condition is calculated and determined by multiplying the rated power when the beam transport vehicle's running mechanism, steering mechanism, and suspension mechanism work simultaneously by the correction factor 2;

[0065] When the beam transport vehicle is in loading and unloading condition, the engine power range under the current condition is calculated and determined by multiplying the working power range of the outrigger mechanism by the correction factor three;

[0066] When the beam transport vehicle is in standby mode, the engine power range under the current operating conditions is a preset range determined according to the beam transport vehicle parameters.

[0067] Furthermore, in step S4, the setting of the speed control range of the diesel engine under the current working condition specifically includes:

[0068] The control parameters of the beam transport vehicle controller that linearly controls the speed of the diesel engine are adjusted according to the coupling, and combined with the engine power range under the current working conditions to determine the speed range of the diesel engine corresponding to the engine power range.

[0069] Furthermore, in step S5, the simultaneous linear automatic control of the diesel engine speed and the hydraulic system displacement specifically includes:

[0070] Determine the starting and ending points of the linear speed control of the diesel engine according to the engine power range under the current working conditions;

[0071] According to the linear coupling relationship between the diesel engine speed and the hydraulic system displacement, the starting point and the end point of the linear control of the proportional valve opening of the driving pump are determined, and then the output range of the control current is calculated;

[0072] According to the output range of the control current, the linear control interval of the operating handle is determined, and the beam transport vehicle controller is switched to the automatic speed control mode to adjust the speed of the diesel engine and the displacement of the hydraulic system in real time according to the output signal of the operating handle.

[0073] Wherein, when the beam transport vehicle is in the moving condition, the speed control range of the diesel engine is 1800-2100rpm;

[0074] When the beam transport vehicle is in loading and unloading condition, the speed control range of the diesel engine is 900-1100rpm;

[0075] When the beam transport vehicle is in standby mode, the speed control range of the diesel engine is 800-1000rpm.

[0076] Embodiment 2: This embodiment provides an energy-saving control method for beam transport vehicle travel. By linearly coupling the diesel engine and the hydraulic system, the original fixed speed control method that only adjusts the speed alone is improved to a new method that linearly controls the diesel engine speed and the hydraulic system displacement at the same time. This improvement aims to solve the problem of excessive speed of the diesel engine when the hydraulic system displacement is low, thereby more effectively improving the energy utilization efficiency.

[0077] In the control system, the displacement of the hydraulic pump is linearly proportional to the control current. The control current is in the range of 7-43 mA, and the displacement of the pump is controlled to vary from 0-100%, wherein 7 mA is the starting point of the pump and 0-7 mA is the dead zone of the pump design.

[0078] When the handle (the handle has a dead zone in the safety design) is at the starting point of the linear motion, the pump displacement (7mA) and the speed of the diesel engine (800rpm) are both at the starting point; when the handle reaches the end point of the linear motion, the pump displacement (43mA) and the speed of the diesel engine (2100rpm) arrive at the same time linearly.

[0079] like Figure 2 As shown, the speed output of the diesel engine is from 600-2100rpm, and the power output is approximately linearly 85-447kw. In order to ensure the normal operation of the diesel engine, the starting point is set to 800-2100rpm. At this time, the system stability is better.

[0080] Embodiment 3, based on the same inventive concept, this embodiment also provides a beam transport vehicle running energy-saving control system using the above control method, mainly including:

[0081] Traveling mechanism: used to drive the beam transport vehicle to move in a straight line;

[0082] Steering mechanism: used to drive the beam transport vehicle to turn;

[0083] Outrigger mechanism: used to support the beam transport vehicle body when loading and unloading box beams;

[0084] The beam transport vehicle controller is used to collect the status signals of the traveling mechanism, steering mechanism and outrigger mechanism in real time to judge the actual working condition of the beam transport vehicle, and simultaneously perform linear automatic control on the speed of the diesel engine and the displacement of the hydraulic system.

[0085] Embodiment 4: Based on the same inventive concept, this embodiment further provides a beam transport vehicle, which is provided with the beam transport vehicle traveling energy-saving control system as described above.

[0086] Furthermore, all parts involved in this application that are not described in detail are the same as the prior art or are implemented using the prior art.

[0087] In summary:

[0088] 1. The present invention provides a beam transport vehicle running energy-saving control method and system, which can simultaneously perform linear coupling control on the diesel engine speed and the hydraulic system displacement under different working conditions of the beam transport vehicle, so that the hydraulic system displacement and the diesel engine power are matched with each other. Compared with the traditional beam transport vehicle fixed speed control method, it can effectively solve the problem of excessively high speed of the diesel engine when the hydraulic system displacement is low, thereby avoiding energy loss and waste;

[0089] 2. The present invention distinguishes the working conditions of the beam transport vehicle under different conditions, and adjusts the diesel engine speed under different working conditions in real time through linear coupling control of the diesel engine and pump displacement, which can greatly improve the energy utilization efficiency of the beam transport vehicle and improve the overall economic efficiency of the equipment, and has broad application prospects.

[0090] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A beam transport vehicle running energy-saving control method, characterized in that: The steps include: S1, detect the actual working condition of the beam transport vehicle; S2, linearly couples the diesel engine speed to the hydraulic system displacement; S3, determining the engine power range under the current working condition according to the actual working condition parameters of the beam transport vehicle; S4, setting a speed control range of the diesel engine under the current working condition according to the engine power range under the current working condition; S5, within the speed control range, the speed of the diesel engine and the displacement of the hydraulic system are linearly and automatically controlled simultaneously.

2. The energy-saving control method for beam transport vehicle according to claim 1 is characterized in that In step S1, the actual working conditions of the beam transport vehicle include: standby working condition, traveling working condition, loading and unloading working condition; The actual working condition of the beam transport vehicle is determined by detecting the input signal of the beam transport vehicle controller: When the movement of the traveling mechanism of the beam transport vehicle is detected, it is determined that the vehicle is currently in the traveling state; When it is detected that the traveling mechanism of the beam transport vehicle is not in motion and the outriggers are extended, it is determined that the current state is loading and unloading; When it is detected that the traveling mechanism of the beam transport vehicle is not moving and the outriggers are not extended, it is determined that the vehicle is currently in standby mode.

3. The energy-saving control method for beam transport vehicle according to claim 1 is characterized in that In step S2, the linear coupling of the diesel engine speed and the hydraulic system displacement includes: The operating handle is linearly controlled to output a linear control current, so that the opening of the proportional valve of the hydraulic system driving pump is linearly proportional to the control current; at the same time, the control parameters of the beam transport vehicle controller for linearly controlling the diesel engine speed are adjusted to couple the diesel engine speed with the opening of the proportional valve of the driving pump to meet the following requirements: When the operating handle is at the linear starting point, the proportional valve opening of the driving pump and the speed of the diesel engine are both at the linear control starting point; When the operating handle is at the linear end point, the proportional valve opening of the drive pump and the speed of the diesel engine reach the linear control end point position at the same time.

4. The energy-saving control method for beam transport vehicle according to claim 3 is characterized in that In step S3, determining the engine power range under the current working condition according to the actual working condition parameters of the beam transport vehicle specifically includes: When the beam transport vehicle is in the running condition, the minimum value of the engine power under the current condition is calculated and determined by multiplying the minimum power required when the beam transport vehicle's running mechanism, steering mechanism, and suspension mechanism work simultaneously by the correction factor 1, and the maximum value of the engine power under the current condition is calculated and determined by multiplying the rated power when the beam transport vehicle's running mechanism, steering mechanism, and suspension mechanism work simultaneously by the correction factor 2; When the beam transport vehicle is in loading and unloading condition, the engine power range under the current condition is calculated and determined by multiplying the working power range of the outrigger mechanism by the correction factor three; When the beam transport vehicle is in standby mode, the engine power range under the current operating conditions is a preset range determined according to the beam transport vehicle parameters.

5. The energy-saving control method for beam transport vehicle according to claim 4 is characterized in that In step S4, the speed control range of the diesel engine under the current working condition is set, specifically including: The control parameters of the beam transport vehicle controller that linearly controls the speed of the diesel engine are adjusted according to the coupling, and combined with the engine power range under the current working conditions to determine the speed range of the diesel engine corresponding to the engine power range.

6. The energy-saving control method for beam transport vehicle according to claim 5 is characterized in that In step S5, the simultaneous linear automatic control of the diesel engine speed and the hydraulic system displacement specifically includes: Determine the starting and ending points of the linear speed control of the diesel engine according to the engine power range under the current working conditions; According to the linear coupling relationship between the diesel engine speed and the hydraulic system displacement, the starting point and the end point of the linear control of the proportional valve opening of the driving pump are determined, and then the output range of the control current is calculated; According to the output range of the control current, the linear control interval of the operating handle is determined, and the beam transport vehicle controller is switched to the automatic speed control mode to adjust the speed of the diesel engine and the displacement of the hydraulic system in real time according to the output signal of the operating handle.

7. The energy-saving control method for beam transport vehicle according to claim 5 is characterized in that: When the beam transport vehicle is in the moving condition, the speed control range of the diesel engine is 1800-2100rpm.

8. The energy-saving control method for beam transport vehicle according to claim 5 is characterized in that: When the beam transport vehicle is in loading and unloading condition, the speed control range of the diesel engine is 900-1100rpm; when the beam transport vehicle is in standby condition, the speed control range of the diesel engine is 800-1000rpm.

9. A beam transport vehicle running energy-saving control system using the control method as claimed in any one of claims 1 to 8, characterized in that: include: Traveling mechanism: used to drive the beam transport vehicle to move in a straight line; Steering mechanism: used to drive the beam transport vehicle to turn; Outrigger mechanism: used to support the beam transport vehicle body when loading and unloading box beams; The beam transport vehicle controller is used to collect the status signals of the traveling mechanism, steering mechanism and outrigger mechanism in real time to judge the actual working condition of the beam transport vehicle, and simultaneously perform linear automatic control on the speed of the diesel engine and the displacement of the hydraulic system.

10. A beam transport vehicle, characterized in that: It includes the energy-saving control system for beam transport vehicle travel as described in claim 8.

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