AU2012315259A1

AU2012315259A1 - Side dumper and control system thereof

Info

Publication number: AU2012315259A1
Application number: AU2012315259A
Authority: AU
Inventors: Yong Fu; Hongliang Wei; Shuang Yang; Lei Yu; Junlin Zhang; Tianjun ZHAO
Original assignee: Qiqihar Railway Rolling Stock Co Ltd
Current assignee: CRRC Qiqihar Rolling Stock Co Ltd
Priority date: 2011-09-29
Filing date: 2012-08-16
Publication date: 2013-10-03
Anticipated expiration: 2032-08-16
Also published as: CN103029713A; BR112013025276B1; CN103029713B; BR112013025276A2; ZA201308008B; WO2013044702A1; AR088188A1; AU2012315259B2

Abstract

A side dumper and a control system thereof. The side dumper control system comprises hydraulic cylinders (1), air-driven hydraulic pumps (2) and air-controlled reversal valves (3). The hydraulic cylinder (1) comprises a cylinder body, the cylinder body is provided with a piston therein, and the piston divides the cylinder body into a first cavity and a second cavity. The number of the hydraulic cylinders (1) is four, every two of which form one group, and the two groups of the hydraulic cylinders (1) are respectively disposed on two sides of the side dumper. The air-driven hydraulic pump (2) is provided with an air inlet, a liquid inlet and a liquid outlet, the air inlet is communicated with a pressure air source, and the liquid inlet is communicated with a pressure liquid source (9). The air-controlled reversal valves (3) are connected between the air-driven hydraulic pumps (2) and the hydraulic cylinders (1). The number of the air-controlled reversal valves (3) is two, and the two hydraulic cylinders on each side of the side dumper are communicated with one air-controlled reversal valve (3). The side dumper comprises a carriage (10), and further comprises the side dumper control system. In the side dumper and the control system thereof, the hydraulic cylinders (1), the air-driven hydraulic pumps (2) and the air-controlled reversal valves (3) are disposed to improve the safety and stability of the side dumper.

Description

Side Dumper and Control System Thereof FIELD OF THE TECHNOLOGY 100011 The present invention relates to the field of side dumper drive technology, and specifically to a side dumper and a control system thereof. BACKGROUND [0002] Currently, there are two main transmission modes for a railway side dumper, one is that a pressurized air source of a locomotive is utilized to drive an air cylinder, so that the air cylinder can be stretched and retracted to achieve side dumping and conduct unloading operation; the other is that a ground power supply or diesel generator set is utilized to drive a motor and cause the hydraulic pump to supply a pressurized oil source, and the side dumping for unloading is achieved by stretching and retracting the hydraulic cylinder. [0003] The locomotive engine is provided with an air compressor, a pressurized air source supplied by the air compressor drives the air cylinder to stretch and retract, and achieves the side dumping and unloading of the vehicle, which can effectively utilize the air source. However, this control system has the following disadvantages during operation: stability of the motion is poor, hopper buckling often appears; the volume of the air cylinder is large, and in the existing side dumper driven by an air cylinder, the air pressure is usually 600Kpa or so, and the diameter of the air cylinder can reach 800mm or so; the controllability is poor, when the pneumatic stretching and retracting is adopted, the motion speed of the air cylinder cannot be controlled, it often moves slowly at first, but suddenly moves quickly later. However, if a generator set or a ground power supply is utilized to drive the hydraulic cylinder, such transmission mode usually needs a working voltage of AC220V or AC38OV, and since a high-voltage power supply is introduced, and the safety requirements are higher, it's not suitable for situation where explosion-proof is required. SUMMARY [0004] The present invention provides a side dumper and a control system thereof, aiming to improve safety and stability of the side dumper. 10005] One aspect of the present invention provides a side dumper control system, including: hydraulic cylinders, where each hydraulic cylinder includes a cylinder body, a piston is provided in the cylinder body and divides the cylinder body into a first chamber and a second chamber, the number of the hydraulic cylinders can be four, and a set of two hydraulic cylinders is arranged at each side of a side dumper, respectively; a pneumatic hydraulic pump, where the pneumatic hydraulic device is provided with an air inlet, a liquid inlet and a liquid outlet, the air inlet communicates with a pressurized air source, the liquid inlet communicates with a pressurized liquid source, and the pneumatic hydraulic pump is configured to exhaust liquid supplied by the pressurized liquid source via the liquid outlet under the action of air supplied by the pressurized air source; pneumatic reversing valves, connected between the pneumatic hydraulic pump and the hydraulic cylinders, the number of the pneumatic reversing valves can be two, where the two hydraulic cylinders at each side of the side dumper communicate with one pneumatic reversing valve, respectively, and the pneumatic reversing valve is configured to supply the liquid exhausted from the liquid outlet of the pneumatic hydraulic pump to the first chamber or the second chamber of the hydraulic cylinder, and further to send the liquid exhausted from the second chamber or the first chamber of the hydraulic cylinder back to the pressurized liquid source, so as to drive the piston of the hydraulic cylinder to do reciprocating motion. [0006] The side dumper control system further includes: duplex balance valves, optionally four duplex balance valves arranged on the outer wall of the hydraulic cylinders, respectively. [00071 The side dumper control system further includes: one-way throttle valves, optionally two one-way throttle valves, arranged between the pneumatic reversing valves and the duplex balance valves, respectively. [0008] The side dumper control system further includes: an air source processor, provided with an air source inlet and an air source outlet, where a filter device and a pressure-regulating device are provided in the air source processor; the air source inlet communicates with the pressurized air source and is connected to the filter device; the air source outlet is provided on the pressure-regulating device and communicates with the air inlet of the pneumatic hydraulic pump. [0009] The side dumper control system further includes: an air control box, connected between the pressurized air source and the air source inlet of the air source processor. [00101 Another aspect of the present invention provides a side dumper, including a carriage and 2 the side dumper control system provided by the present invention; where the side dumper control system has four hydraulic cylinders, a set of two hydraulic cylinders is arranged at each side of the carriage, respectively, and the carriage turns over under the driving of the hydraulic cylinders. [0011] Seen from the above technical solutions, the side dumper and the control system thereof provided by embodiments of the present invention are provided with the pneumatic hydraulic pump, the pneumatic reversing valve and the hydraulic cylinder, where the pneumatic hydraulic pump is driven by the air to pump liquid, and then controls the liquid to drive the hydraulic cylinder to stretch and retract under the control of the pneumatic reversing valve, so as to achieve a dumping action of the side dumper and avoid the situation that the stability cannot be controlled due to the poor volume controllability of the air when directly driving the air cylinder by the air, as well as the safety problem due to introduction of a high-voltage power supply when directly driving the hydraulic cylinder by the liquid, such that the safety and stability of the side dumper is improved. BRIEF DESCRIPTION OF THE DRAWINGS [00121 FIG. 1 is a schematic structural diagram of a side dumper control system according to an embodiment of the present invention; [0013] FIG.2 is a schematic structural diagram of a side dumper according to an embodiment of the present invention; and [0014] FIG.3 is a schematic diagram of a turnover structure of the side dumper according to an embodiment of the present invention. DETAILED DESCRIPTION [0015] In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, a clear and complete description of the technical solutions in embodiments of the present invention is given with reference to the embodiments. It should be noted that similar or the same elements all use the same reference signs in the accompanying drawings or the description. [0016] FIG.1 is a schematic structural diagram of a side dumper control system according to an embodiment of the present invention; as shown in FIG.1, the side dumper control system comprises a hydraulic cylinder 1, a pneumatic hydraulic pump 2 and a pneumatic reversing valve 3 3. The hydraulic cylinder I includes a cylinder body, where a piston is provided in the cylinder body and divides the cylinder body into a first chamber and a second chamber, the number of the hydraulic cylinders 1 can be four, and a set of two hydraulic cylinders is arranged at each side of a side dumper, respectively. The pneumatic hydraulic pump 2 is provided with an air inlet, a liquid inlet and a liquid outlet, where the air inlet communicates with a pressurized air source, the liquid inlet communicates with a pressurized liquid source 9, and the pneumatic hydraulic pump 2 is configured to exhaust liquid supplied by the pressurized liquid source 9 via the liquid outlet under the action of air supplied by the pressurized air source. The locomotive is provided with an air compressor, which supplies a pressurized air source, and the air generated by the pressurized air source outputs via a side door air duct 4 and a brake air duct 5. The pneumatic reversing valve 3 is connected between the pneumatic hydraulic pump 2 and the hydraulic cylinder 1, the number of the pneumatic reversing valves 3 can be two, the two hydraulic cylinders I at each side of the side dumper communicate with one pneumatic reversing valve 3, respectively, and the pneumatic reversing valve 3 is configured to supply the liquid exhausted from the liquid outlet of the pneumatic hydraulic pump 2 to the first chamber or the second chamber of the hydraulic cylinder 1, and further to send the liquid exhausted from the second chamber or the first chamber of the hydraulic cylinder back to the pressurized liquid source 9, so as to drive the piston of the hydraulic cylinder 1 to do reciprocating motion. Specifically, the pneumatic reversing valve 3 can be a three-position four-way pneumatic reversing valve with a first vent, a second vent, a third vent and a fourth vent, where the first vent communicates with the liquid outlet of the pneumatic hydraulic pump 2, the second vent communicates with the pressurized air source 9, the third vent communicates with the first chamber of the hydraulic cylinder 1, and the fourth vent communicates with the second chamber of the hydraulic cylinder 1, in this way, a first passage is formed between the first vent and the third vent, a second passage is formed between the second vent and the fourth vent, a third passage is formed between the first vent and the fourth vent, a fourth passage is formed between the second vent and the third vent, and the pneumatic reversing valve 3 can achieve the switching between the four passages under the control of the air. Specifically, the pneumatic reversing valve 3 can share the same pressurized air source with the pneumatic hydraulic pump 2, and the side dumper control system can further be provided with a electromagnetic reversing valve and a manual reversing valve, so as to control the operation of the pneumatic reversing valve 3, and the manual reversing valve is arranged to achieve the interlock function of remote control and manual 4 operations, thus effectively avoiding misoperation. [0017] Specifically, the operating process of the side dumper control system can be as follows: the pneumatic hydraulic pump 2 pumps liquid under the action of air supplied by the pressurized air source, and pumps out liquid supplied by the pressurized liquid source 9, specifically, the pressurized liquid source 9 can be an oil tank, the hydraulic cylinder 1 can be a double acting hydraulic oil cylinder, where oil is used as the liquid driving medium, and is resistant to corrosion. Under the control of air, the first passage and the second passage are open, while the third passage and the fourth passage are closed. In this way, the liquid supplied by the pneumatic hydraulic pump 2 enters the first chamber via the first passage, pushes the piston to move towards the second chamber, and pushes the liquid in the second chamber to be exhausted out to the pressurized liquid source 9 via the second passage to complete the unloading. When reversing under the control of air, the first passage and the second passage are closed, while the third passage and the fourth passage are open. In this way, the liquid supplied by the pneumatic hydraulic pump 2 enters the second chamber via the third passage, pushes the piston to move towards the first chamber, and pushes the liquid in the first chamber to be exhausted out to the pressurized liquid source 9 via the fourth passage to complete the unloading. Furthermore, recycling of the liquid supplied by the pressurized liquid source 9 can be achieved. [0018] Since two of the four hydraulic cylinders 1 are arranged at one side of a side dumper and the other two of the four hydraulic cylinders 1 are arranged at the other side of the side dumper, and the hydraulic cylinders 1 at the same side are controlled by one pneumatic reversing valve 3, the first chambers of the two hydraulic cylinders I at one side are controlled to feed liquid while the second chambers discharge liquid, such that the pistons are stretched outwardly; at the same time, the first chambers of the other two hydraulic cylinders I at the other side are controlled to discharge liquid while the second chambers feed liquid, such that the pistons are retracted inwardly, so as to achieve a dumping action of the side dumper. In addition, a pneumatic reversing valve 3 can be used to control the two hydraulic cylinders 1 at the front side, and another pneumatic reversing valve 3 can be used to control the two hydraulic cylinders 1 at the rear side, so as to achieve a dumping action of the side dumper in the front and rear direction. [0019] In the side dumper control system provided by embodiments of the present invention, the pneumatic hydraulic pump 2 is driven by the air, avoiding the damage caused by the introduction of a high-voltage power supply, and improving the safety of the side dumper. Furthermore, the hydraulic pressure is used as the driving medium of a hydraulic cylinder 1, the 5 controllability is strong, and working stability of the hydraulic cylinder 1 is improved, and thereby the stability of the side dumper is improved. The pneumatic reversing valve 3 can be configured as being operated by remote control, such that long-distance operation is achieved, avoiding dust invasion, guaranteeing the personal safety of the operator, and thereby improving the safety of the side dumper. [0020] In this embodiment, the side dumper control system can further include a duplex balance valve 6. Optionally, there may be four duplex balance valves 6 respectively arranged on the outer wall of the hydraulic cylinders 1. Specifically, the duplex balance valve 6 is fixed on the cylinder body of the hydraulic cylinder 1, and the corresponding ports of the duplex balance valve 6 and the hydraulic cylinder I are connected via a hose. And the duplex balance valve 6 can also be used as a safety lock, which plays a certain role in the control of the stretching and retracting positions and speeds of the hydraulic cylinder 1. The duplex balance valve 6 is arranged to improve the stability of the side dumping action, and avoid excessively fast side dumping and reset action of the carriage, improving the stability of the side dumper. [0021] In this embodiment, the side dumper control system can further include a one-way throttle valve 7. Optionally, there may be two one-way throttle valves 7 respectively arranged between the pneumatic reversing valve 3 and the duplex balance valve 6. The one-way throttle valve 7 is arranged to control the flow speed of the liquid, so as to maintain a smooth flow speed of the liquid, avoid hopper buckling, and improve the stability of the side dumper control system. [0022] In this embodiment, the side dumper control system can further include an air source processor, provided with an air source inlet and an air source outlet, where a filter device and a pressure-regulating device 8 are provided in the air source processor; the air source inlet communicates with the pressurized air source and is connected to the filter device; the air source outlet is provided on the pressure-regulating device 8 and communicates with the air inlet of the pneumatic hydraulic pump 2. Specifically, the pressure-regulating device 8 can be a relief valve, the air pressure can be set specifically according to the practical requirements, and the air supplied by the air source is filtered and under pressure-regulating treatment by the air source processor, improving the stability of the air source and the adaptability to the pneumatic hydraulic pump 2. [0023] In this embodiment, the side dumper control system can further comprise an air control box, connected between the pressurized air source and the air source inlet of the air source processor. The air control box is arranged to make initial control treatment to the air supplied by 6 the pressurized air source. [0024] FIG.2 is a schematic structural diagram of a side dumper according to an embodiment of the present invention. As shown in FIG.2, the side dumper in this embodiment comprises a carriage 10, and further includes the side dumper control system provided by any one of the embodiments of the present invention. Two of the four hydraulic cylinders 1 of the side dumper control system are arranged at one side of the carriage 10, the other two of the four hydraulic cylinders 1 of the side dumper control system are arranged at the other side of the carriage 10, and the carriage 10 turns over under the driving of the hydraulic cylinders 1. The schematic diagram of a turnover of the carriage 10 under the driving of the hydraulic cylinders I is as shown in FIG.3, specifically, when the carriage 10 turns over, the carriage 10 may form an angle of 45 degrees with the track plane 11. [0025] Specifically, the side dumper is further provided with an electrical system, which powers electromagnetic commutator and other electrical equipments, and provides a low-voltage power supply to the remote control. Specifically, the electrical system can include a solar panel, a storage battery, an isolating switch, an on-board charger, and a pressure relay. The solar panel absorbs the light energy, and converts it to the electrical energy to charge the storage battery. The solar energy is utilized to supply power, which can effectively utilizes the natural energy, and facilitates energy saving and environmental protection. [0026] In this embodiment, the side dumper is further provided with an electrical control system, so as to achieve charging control to the storage battery, and remote control to the side dumper control system. [0027] In the practical operating process of a side dumper, when the air pressure of the vehicle reaches the technical requirements, turn the on-board switcher to ON state, and after the green indicating light for the power supply is on, turn the lock switch of the remote controller to ON state, and after hearing a short buzz (it proves the voltage for the remote controller is normal or the installation of battery is correct), select the carriage number button at the lower side to the number of the carriage to be operated, such as 174. Press down the panel at the upper side of the remote controller to operate. [0028] Specifically, there are two working modes for the side dumper. I. Single-door operation: after the completion of the above operations, press down the button of the door to be opened/closed (press and hold), the corresponding door can be opened or closed. 7 II. Combined operation: after the completion of the above operations, turn A&B or C&D switcher to A&B side, press down "A&B up", A side of the vehicle starts to turn over, and press down "A&B down", A side of the vehicle starts to reset. Turn A&B or C&D switcher to C&D side, press down "C&D up", B side of the vehicle starts to turn over, and press down "C&D down", B side of the vehicle starts to reset. [0029] The side dumper provided by this embodiment are provided with a pneumatic hydraulic pump, avoiding the damage due to introduction of a high-voltage power supply, improving the safety of the side dumper, and also making effective use of the pressurized air source provided on the side dumper, and thus avoiding waste of energy. The pneumatic reversing valve is provided, such that long-distance operation to the reversing valve is achieved, so as to achieve stretching and retracting control to the double acting hydraulic cylinder, and thereby improving the safety and stability of the side dumper. [0030] The side dumper and the control system thereof provided by this embodiment are provided with the pneumatic hydraulic pump, the pneumatic reversing valve and the hydraulic cylinder, where the pneumatic hydraulic pump is driven by the air to pump liquid, and then controls the liquid to drive the hydraulic cylinder to stretch and retract under the control of the pneumatic reversing valve, so as to achieve a dumping action of the side dumper and avoid the situation that the stability cannot be controlled due to the poor volume controllability of the air when directly driving the air cylinder by the air, as well as the safety problem due to introduction of a high-voltage power supply when directly driving the hydraulic cylinder by the liquid, such that the safety and stability of the side dumper is improved. [0031] In the side dumper and the control system thereof provided by the present invention, the side dumper integrates a hydraulic system, an electrical system, an air control system, a remote control system and a mechanical transmission as a whole. The hydraulic system includes the pneumatic hydraulic pump, the balance valve, the double-acting two-stage hydraulic cylinder, the one-way throttle valve and etc. The hydraulic cylinder includes a piston rod, a primary guide sleeve, a secondary guide sleeve, a primary cylinder body, and a secondary cylinder body, where, the number of the hydraulic cylinders can be four, and a set of two hydraulic cylinders are arranged at each side of the vehicle, that is, the hydraulic cylinders are arranged at each side of the side dumper, respectively; the electrical system includes a solar panel, a storage battery, an isolating switch, an on-board charger, and a pressure relay. The solar panel absorbs the light energy, and converts it to the electrical energy to charge the storage battery. The electrical 8 system is the supporting equipment of the side dumper remote control system. The electromagnetic reversing valve of the air control system is controlled remotely to execute different actions; the air control system is not only the power source of the vehicle, but also the core executing device of the vehicle. By means of actions of different pneumatic elements, the desired rate of flow and pressure are achieved. To avoid failure of the solar panel or remote control system, the vehicle is further provided with a manual operation; the remote control system mainly comprises a transmitter and a receiver. The remote control system is adopted to control remotely for personal safety. Specifically, the remote controller can have the function of setting three-digit vehicle number, and the remote controller can control at most 999 individual carriages to act separately, improving the convenience of the vehicle control. [0032] Finally, it should be noted that the above embodiments are merely provided for describing the technical solutions of the present invention, but not intended to limit the present invention. It should be understood by those skilled in the art that although the present invention has been described in detail with reference to the foregoing embodiments, modifications can be made to the technical solutions described in the foregoing embodiments, or equivalent replacements can be made to some technical features in the technical solutions; however, such modifications or replacements do not cause the essence of corresponding technical solutions to depart from the spirit and scope of the embodiments of the present invention. 9

Claims

1. A side dumper control system, comprising: at least four hydraulic cylinders, each comprising a cylinder body, wherein a piston is provided in the cylinder body and divides the cylinder body into a first chamber and a second chamber, and a set of two hydraulic cylinders are arranged at each side of a side dumper, respectively; a pneumatic hydraulic pump, provided with an air inlet, a liquid inlet and a liquid outlet, wherein the air inlet communicates with a pressurized air source, the liquid inlet communicates with a pressurized liquid source, and the pneumatic hydraulic pump is configured to exhaust liquid supplied by the pressurized liquid source via the liquid outlet under the action of air supplied by the pressurized air source; at least two pneumatic reversing valves, connected between the pneumatic hydraulic pump and the hydraulic cylinder, the two hydraulic cylinders at each side of the side dumper communicate with one pneumatic reversing valve, respectively, and the pneumatic reversing valve is configured to supply the liquid exhausted from the liquid outlet of the pneumatic hydraulic pump to the first chamber or the second chamber of the hydraulic cylinder, and further to send the liquid exhausted from the second chamber or the first chamber of the hydraulic cylinder back to the pressurized liquid source, so as to drive the piston of the hydraulic cylinder to do reciprocating motion.

2. The side dumper control system according to claim 1, further comprising: at least four duplex balance valves, arranged on the outer wall of the hydraulic cylinders, respectively.

3. The side dumper control system according to claim 2, further comprising: at least two one-way throttle valves, arranged between the pneumatic reversing valve and the duplex balance valve, respectively.

4. The side dumper control system according to any one of claims 1-3, further comprising: an air source processor, provided with an air source inlet and an air source outlet, wherein a filter device and a pressure-regulating device are provided in the air source processor; the air source inlet communicates with the pressurized air source and is connected to the filter device; the air source outlet is provided on the pressure-regulating device and communicates with the air 10 inlet of the pneumatic hydraulic pump.

5. The side dumper control system according to claim 4, fTrther comprising: an air control box, connected between the pressurized air source and the air inlet of the air source processor.

6. A side dumper, comprising a carriage and the side dumper control system according to any one of claims 1-5; wherein a set of two hydraulic cylinders of the side dumper control system are arranged at each side of the carriage, respectively, and the carriage turns over under the driving of the hydraulic cylinders. 11