CN111173790B - Emergency self-loading and unloading equipment and hydraulic control system thereof - Google Patents
Emergency self-loading and unloading equipment and hydraulic control system thereof Download PDFInfo
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- CN111173790B CN111173790B CN202010036056.8A CN202010036056A CN111173790B CN 111173790 B CN111173790 B CN 111173790B CN 202010036056 A CN202010036056 A CN 202010036056A CN 111173790 B CN111173790 B CN 111173790B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
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Abstract
The invention discloses an emergency self-loading and unloading device and a hydraulic control system thereof, wherein the hydraulic control system comprises an oil supply mechanism, a translation mechanism, a telescopic mechanism and a fixing mechanism; the translation mechanism comprises a first translation oil cylinder and a second translation oil cylinder, and the output end of the first translation oil cylinder and the output end of the second translation oil cylinder respectively face two different directions; the telescopic mechanism comprises a first telescopic oil cylinder and a second telescopic oil cylinder, the first telescopic oil cylinder is arranged at the output end of the first translation oil cylinder, and the second telescopic oil cylinder is arranged at the output end of the second translation oil cylinder; the fixing mechanism is arranged below the translation mechanism and comprises a first fixing oil cylinder and a second fixing oil cylinder, and the output ends of the first telescopic oil cylinder, the second telescopic oil cylinder, the first fixing oil cylinder and the second fixing oil cylinder are all arranged downwards; the oil supply mechanism is used for supplying oil to the translation mechanism, the telescopic mechanism and the fixing mechanism. The invention has the advantage of automatic loading and unloading.
Description
Technical Field
The invention relates to the field of emergency rescue equipment, in particular to emergency self-loading and unloading equipment and a hydraulic control system thereof.
Background
Due to the particularity of the emergency rescue environment, the situation that the emergency rescue equipment cannot be loaded and unloaded by using the hoisting equipment often occurs, for example, a high-voltage cable is arranged on the upper part of a loading and unloading field, or the loading and unloading field is too narrow and small, and a crane cannot be unfolded for operation, so that the emergency rescue equipment cannot be mounted on or dismounted from a carrying flat car, and the emergency rescue operation is influenced. If the loading and unloading are carried out by manpower or other methods, the equipment is likely to be damaged, even the serious safety accidents of casualties occur, and the loading and unloading method is labor-intensive and has long loading and unloading time.
Disclosure of Invention
Therefore, the emergency self-loading and unloading equipment and the hydraulic control system thereof are needed to be provided, so that the problems that the rescue equipment in the prior art is easily limited by rescue environment due to the fact that the rescue equipment is loaded and unloaded by hoisting equipment, is easily damaged or causes casualties due to the fact that the rescue equipment is loaded and unloaded by manpower are solved.
In order to achieve the above object, the inventor provides a hydraulic control system, which includes an oil supply mechanism, a translation mechanism, a telescopic mechanism and a fixing mechanism;
the translation mechanism comprises a first translation oil cylinder and a second translation oil cylinder, and the output end of the first translation oil cylinder and the output end of the second translation oil cylinder face two different directions respectively;
the telescopic mechanism comprises a first telescopic oil cylinder and a second telescopic oil cylinder, the first telescopic oil cylinder is arranged at the output end of the first translation oil cylinder, and the second telescopic oil cylinder is arranged at the output end of the second translation oil cylinder;
the fixing mechanism is arranged below the translation mechanism and comprises a first fixing oil cylinder and a second fixing oil cylinder, and the output end of the first telescopic oil cylinder, the output end of the second telescopic oil cylinder, the output end of the first fixing oil cylinder and the output end of the second fixing oil cylinder are all arranged downwards;
the oil supply mechanism is used for supplying oil to the translation mechanism, the telescopic mechanism and the fixing mechanism, and the translation mechanism, the telescopic mechanism and the fixing mechanism are mutually matched so as to unload or load emergency materials onto the flat carrier loader from the upper part of the flat carrier loader.
As a preferable structure of the present invention, the oil supply mechanism includes an oil tank, a hydraulic oil pump; an oil inlet hole of the hydraulic oil pump is connected with an oil tank; the first translation oil cylinder, the second translation oil cylinder, the first telescopic oil cylinder, the second telescopic oil cylinder, the first fixed oil cylinder and the second fixed oil cylinder are all connected with the oil tank and the oil outlet hole of the hydraulic oil pump.
As a preferred structure of the invention, the hydraulic oil pump further comprises an unloading valve and a controller, wherein an oil inlet of the hydraulic oil pump is connected with the oil tank through a first oil inlet pipe, an oil outlet of the hydraulic oil pump is connected with the unloading valve through a second oil inlet pipe, and the unloading valve is connected with the oil tank through an oil outlet pipe; the large cavity and the small cavity of the first translation oil cylinder, the second translation oil cylinder, the first telescopic oil cylinder, the second telescopic oil cylinder, the first fixed oil cylinder and the second fixed oil cylinder are connected with the unloading valve through oil conveying pipes, and the controller is connected with the hydraulic oil pump and the unloading valve.
As a preferred structure of the invention, each oil conveying pipe is provided with a synchronous valve and an electromagnetic valve; the controller is connected with the electromagnetic valve and the synchronous valve.
As a preferred structure of the invention, the synchronous valve is a hydraulic bridge consisting of four one-way valves and an electro-hydraulic proportional speed regulating valve; and displacement sensors are arranged at the tail ends of piston rods of the first translation oil cylinder, the second translation oil cylinder, the first telescopic oil cylinder, the second telescopic oil cylinder, the first fixed oil cylinder and the second fixed oil cylinder, and the displacement sensors are connected with a controller.
The oil inlet pipe and the oil outlet pipe are connected with the safety valve.
As a preferable structure of the present invention, the oil outlet pipe is provided with an oil return filter assembly.
As a preferred structure of the invention, the number of the translation mechanisms is two, and the two translation mechanisms are respectively arranged in parallel front and back;
the two first telescopic oil cylinders are respectively arranged at the output ends of the two first translation oil cylinders, and the two second telescopic oil cylinders are respectively arranged at the output ends of the two second translation oil cylinders;
the first fixed oil cylinder and the second fixed oil cylinder are both provided with two oil cylinders, the two first fixed oil cylinders are respectively arranged below the two translation mechanisms, and the two second fixed oil cylinders are also respectively arranged below the two translation mechanisms.
Different from the prior art, the hydraulic control system in the technical scheme comprises an oil supply mechanism, a translation mechanism, a telescopic mechanism and a fixing mechanism; the translation mechanism comprises a first translation oil cylinder and a second translation oil cylinder; telescopic machanism includes first flexible hydro-cylinder and the flexible hydro-cylinder of second fixed establishment includes first fixed hydro-cylinder and the fixed hydro-cylinder of second, fuel feeding mechanism is used for right translation mechanism telescopic machanism fixed establishment carries out the fuel feeding, translation mechanism telescopic machanism thereby fixed establishment mutually supports and unloads or load to dull and stereotyped carrier loader with emergent goods and materials from dull and stereotyped carrier loader top. Therefore, oil inlet and oil outlet can be controlled, the first translation oil cylinder, the second translation oil cylinder, the first telescopic oil cylinder, the second telescopic oil cylinder, the first fixed oil cylinder and the second fixed oil cylinder can move according to required actions, and accordingly emergency materials can be unloaded from the upper portion of the flat plate carrier loader or loaded onto the flat plate carrier loader safely and quickly.
The inventor also provides an emergency self-loading and unloading device which comprises a storage table and a hydraulic control system, wherein the hydraulic control system is any one of the hydraulic control systems; the object placing table is arranged on the translation mechanism and used for placing emergency materials.
Different from the prior art, the emergency self-loading and unloading equipment in the technical scheme comprises an object placing table and a hydraulic control system, wherein the hydraulic control system is any one of the hydraulic control systems; the object placing table is arranged on the translation mechanism and used for placing emergency materials. So then can control the oil feed and produce oil to make first translation hydro-cylinder, second translation hydro-cylinder, first flexible hydro-cylinder, the flexible hydro-cylinder of second, first fixed hydro-cylinder, the fixed hydro-cylinder of second can be according to required action motion, thereby can put the thing platform and unload or load to the dull and stereotyped carrier loader from dull and stereotyped carrier loader top, safe, quick.
Drawings
Fig. 1 is a first working state diagram of an emergency self-loading and unloading device according to an embodiment of the present invention;
fig. 2 is a second working state diagram of the emergency self-loading and unloading apparatus according to an embodiment of the present invention;
fig. 3 is a third operational state diagram of the emergency self-loading and unloading apparatus according to an embodiment of the present invention;
fig. 4 is a fourth diagram illustrating an operating state of the emergency self-loading and unloading apparatus according to an embodiment of the present invention;
fig. 5 is a fifth working state diagram of the emergency self-loading and unloading device according to an embodiment of the present invention;
fig. 6 is a sixth operational state diagram of the emergency self-loading and unloading apparatus according to an embodiment of the present invention;
fig. 7 is a seventh operational state diagram of the emergency self-loading and unloading apparatus according to an embodiment of the present invention;
fig. 8 is an eighth operational state diagram of the emergency self-loading and unloading apparatus according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a hydraulic control system according to an embodiment of the present invention;
FIG. 10 is an enlarged view of the oil supply mechanism of FIG. 9 according to an embodiment of the present invention;
FIG. 11 is an enlarged view of the translation mechanism of FIG. 9 in accordance with an embodiment of the present invention;
FIG. 12 is an enlarged view of the telescoping mechanism of FIG. 9 according to one embodiment of the present invention;
FIG. 13 is an enlarged view of the securing mechanism of FIG. 9 according to one embodiment of the present invention;
fig. 14 is a schematic structural diagram of a synchronizing valve according to an embodiment of the present invention.
Description of reference numerals:
1. a placing table;
2. a first translation cylinder at the front left;
3. a second translation cylinder at the front right;
4. a first fixed oil cylinder at the front left;
5. a second fixed oil cylinder at the front right;
6. a first telescopic oil cylinder at the front left;
7. a second telescopic oil cylinder at the front right;
8. carrying the flat car;
9. a first translation cylinder at the left rear;
10. a right rear second translation cylinder;
11. a first fixed oil cylinder at the left back;
12. a second fixed oil cylinder at the right back;
13. the first telescopic oil cylinder is arranged at the left back;
14. the second telescopic oil cylinder is arranged at the right rear part;
15. a first oil inlet pipe;
16. a second oil inlet pipe;
17. an oil outlet pipe;
18. a delivery pipe;
19. a one-way valve;
20. an electro-hydraulic proportional speed regulating valve.
Detailed Description
To explain technical contents, structural features, and objects and effects of the technical solutions in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.
The invention provides a hydraulic control system which is used for completing the loading and unloading operation of emergency materials.
In a specific embodiment, the hydraulic control system comprises an oil supply mechanism, a translation mechanism, a telescopic mechanism and a fixing mechanism;
the translation mechanism comprises a first translation oil cylinder and a second translation oil cylinder, and the output end of the first translation oil cylinder and the output end of the second translation oil cylinder face two different directions respectively;
the telescopic mechanism comprises a first telescopic oil cylinder and a second telescopic oil cylinder, the first telescopic oil cylinder is arranged at the output end of the first translation oil cylinder, and the second telescopic oil cylinder is arranged at the output end of the second translation oil cylinder;
the fixing mechanism is arranged below the translation mechanism and comprises a first fixing oil cylinder and a second fixing oil cylinder, and the output end of the first telescopic oil cylinder, the output end of the second telescopic oil cylinder, the output end of the first fixing oil cylinder and the output end of the second fixing oil cylinder are all arranged downwards;
the oil supply mechanism is used for supplying oil to the translation mechanism, the telescopic mechanism and the fixing mechanism, and the translation mechanism, the telescopic mechanism and the fixing mechanism are mutually matched so as to unload or load emergency materials onto the flat carrier loader from the upper part of the flat carrier loader.
Referring to fig. 1, the present invention provides an emergency self-loading and unloading apparatus, which includes a platform and a hydraulic control system, wherein the hydraulic control system is the above-mentioned hydraulic control system; the object placing table is arranged on the translation mechanism and used for placing emergency materials.
Referring to fig. 9 to 13, the oil supply mechanism may include an oil tank a, a hydraulic oil pump m, an unloading valve YV11, and a controller, where the oil tank stores oil for pushing a piston rod of the oil cylinder, the hydraulic oil pump is configured to pump the oil in the oil tank into a large cavity or a small cavity of the oil cylinder, the unloading valve is configured to adjust a direction of an oil path of the oil inlet, and the controller is configured to control power on or off of the unloading valve, the hydraulic oil pump, and a solenoid valve and a synchronization valve described below, that is, to control opening or closing of the unloading valve, the hydraulic oil pump, the solenoid valve, and the synchronization valve described below, and specifically, the controller may be a PLC controller.
An oil inlet hole of the hydraulic oil pump is connected with an oil tank through a first oil inlet pipe 15, and oil in the oil tank can be conveyed into the hydraulic oil pump through the first oil inlet pipe 15; the oil outlet of the hydraulic oil pump is connected with the unloading valve through the second oil inlet pipe 16, and the oil pumped by the hydraulic oil pump can be conveyed to the unloading valve through the second oil inlet pipe 16 and conveyed to the position where the oil is needed under the regulation of the unloading valve.
The large cavity and the small cavity of the first translation oil cylinder, the second translation oil cylinder, the first telescopic oil cylinder, the second telescopic oil cylinder, the first fixed oil cylinder and the second fixed oil cylinder are all connected with an unloading valve through a delivery pipe 18, and the unloading valve is connected with an oil tank through an oil outlet pipe 17. Through the control valve then can control be oil feed to first translation hydro-cylinder, the second translation hydro-cylinder, first flexible hydro-cylinder, the flexible hydro-cylinder of second, first fixed hydro-cylinder, the big chamber department of the fixed hydro-cylinder of second, still oil feed to first translation hydro-cylinder, the second translation hydro-cylinder, first flexible hydro-cylinder, the flexible hydro-cylinder of second, first fixed hydro-cylinder, the loculus department of the fixed hydro-cylinder of second, and make the big chamber of each hydro-cylinder can form the fluid return circuit, and the loculus of each hydro-cylinder also can form the fluid return circuit, specific fluid return circuit is: oil in the oil tank is pumped into the large cavity through a hydraulic oil pump, and meanwhile, under the extrusion of the large cavity, the oil in the small cavity is extruded into the oil tank; or the oil in the oil tank is pumped into the small cavity through the hydraulic oil pump, and meanwhile, the oil in the large cavity is extruded into the oil tank under the extrusion of the small cavity.
Each oil conveying pipe 18 is provided with a synchronous valve and an electromagnetic valve, and the controller is connected with the hydraulic oil pump, the unloading valve, the electromagnetic valve and the synchronous valve. Through the electromagnetic valve, the appointed oil conveying pipe 18 can be conducted or blocked under the control of the controller according to requirements, so that the purposes of controlling oil inlet and oil outlet of the first translation oil cylinder, the second translation oil cylinder, the first telescopic oil cylinder, the second telescopic oil cylinder and the first fixed oil cylinder are achieved; through the synchronous valve, the oil inlet amount and the oil outlet amount of the first translation oil cylinder, the second translation oil cylinder, the first telescopic oil cylinder, the second telescopic oil cylinder, the first fixed oil cylinder and the second fixed oil cylinder can be controlled to be the same under the control of the controller, and the same telescopic distance is ensured.
Referring to fig. 14, in the preferred embodiment, the synchronous valve is a hydraulic bridge consisting of four check valves 19 and an electro-hydraulic proportional speed control valve 20; and displacement sensors are arranged at the tail ends of piston rods of the first translation oil cylinder, the second translation oil cylinder, the first telescopic oil cylinder, the second telescopic oil cylinder, the first fixed oil cylinder and the second fixed oil cylinder, and the displacement sensors are connected with a controller. The controller calculates the piston rod movement difference of the oil cylinders which need to move synchronously according to the displacement measured by each displacement sensor, outputs the difference to the electro-hydraulic proportional speed regulating valve 20 in a Pulse Width Modulation (PWM) mode after judgment so as to correct the current, and the opening amount of the speed regulating valve is changed after the current is corrected, so that the flow of the output oil is changed, and the aims of adjusting the speed of the corresponding oil cylinder and synchronizing the speeds of the oil cylinders are fulfilled.
In order to increase the translation stroke, in a certain embodiment, the first translation cylinder and the second translation cylinder each include two conjoined cylinders, a large cavity of one conjoined cylinder is connected with a small cavity of the other conjoined cylinder, and the large cavity and the small cavity of the conjoined cylinder are connected with the unloading valve through the delivery oil pipe 18.
In a further embodiment, a safety valve c is included, and the second oil inlet pipe 16 and the oil outlet pipe 17 are connected to the safety valve c. The safety valve plays a role in protecting the hydraulic control system during working, and when the pressure reaches the set pressure during working, the valve of the safety valve is automatically opened and unloaded, so that the protection effect is achieved.
Because fluid is in transportation process and promotion piston in-process in order to produce the sediment, the fluid that has the sediment when being extracted by hydraulic oil pump to cause hydraulic oil pump's jam, and when carrying to hydro-cylinder department, easily block up oil pipe and hydro-cylinder, consequently, in further embodiment, oil pipe 17 is provided with back oil filter subassembly, then can filter the edulcoration to fluid when fluid returns the oil tank through returning oil filter subassembly, guarantees to flow back to the fluid in the oil tank and does not have too much sediment, is favorable to the long-term used of recycling of fluid.
The two translation mechanisms are arranged in parallel front and back respectively; the two first telescopic oil cylinders are respectively arranged at the output ends of the two first translation oil cylinders, and the two second telescopic oil cylinders are respectively arranged at the output ends of the two second translation oil cylinders; the first fixed oil cylinder and the second fixed oil cylinder are both provided with two oil cylinders, the two first fixed oil cylinders are respectively arranged below the two translation mechanisms, and the two second fixed oil cylinders are also respectively arranged below the two translation mechanisms.
In a specific embodiment, there are two translation mechanisms, that is, there are two first translation cylinders and two second translation cylinders, and the two translation mechanisms are respectively disposed at the front end and the rear end of the object placing table 1, for example, the two first translation cylinders are respectively disposed at the front left position and the rear left position of the object placing table 1, and for convenience of description, they are hereinafter referred to as the front left first translation cylinder 2 and the rear left first translation cylinder 9; the two second translation cylinders are provided at the front right position and the rear right position of the platform 1, and are hereinafter referred to as a front right second translation cylinder 3 and a rear right second translation cylinder 10 for convenience of description.
The first telescopic oil cylinders and the second telescopic oil cylinders are respectively provided with two, the two first telescopic oil cylinders are respectively arranged at the output ends of the two first translation oil cylinders, and the two second telescopic oil cylinders are respectively arranged at the output ends of the two second translation oil cylinders. If the two first telescopic cylinders are respectively arranged at the output ends of the first translation cylinder 2 at the front left and the first translation cylinder 9 at the rear left, that is, the two first telescopic cylinders are respectively positioned at the front left position and the rear left position of the object placing table 1, for convenience of description, the two first telescopic cylinders are hereinafter referred to as a first telescopic cylinder 6 at the front left and a first telescopic cylinder 13 at the rear left; the two second telescopic cylinders are respectively arranged at the output ends of the second translation cylinder 3 in front of the right and the second translation cylinder 10 in back of the right, that is, the two second telescopic cylinders are respectively positioned at the right front position and the right back position of the object placing table 1, and similarly, for convenience of description, the two second telescopic cylinders are hereinafter referred to as a second telescopic cylinder 7 in front of the right and a second translation leg oil in back of the right. Through above setting, then can support more steadily put thing platform 1 and translation and put thing platform 1.
Similarly, in order to control the two first translation cylinders, the two second translation cylinders, the two first telescopic cylinders and the two second telescopic cylinders, the large cavities and the small cavities of the two first translation cylinders, the two second translation cylinders, the two first telescopic cylinders and the two second telescopic cylinders are all connected with the unloading valve through the delivery pipe 18, and the delivery pipe 18 is also provided with a synchronous valve and an electromagnetic valve which are connected with the controller.
In a further embodiment, two first fixed oil cylinders are also arranged, and the two first fixed oil cylinders are respectively arranged at the front end and the rear end of the object placing table 1; likewise, in order to be able to control the two first fixed cylinders, the large and small chambers of said first fixed cylinders are also connected to the unloading valve by means of the transfer tubing 18, and said transfer tubing 18 is also provided with a synchronization valve and an electromagnetic valve connected to the controller. Two first fixed hydro-cylinders then can support thing platform 1 with two removal to subaerial two first flexible hydro-cylinders or two second flexible hydro-cylinders jointly. The two first fixed oil cylinders are respectively arranged on one side of the front end and one side of the rear end of the object placing table 1, and the two second fixed oil cylinders are respectively arranged on the other side of the front end and the other side of the rear end of the object placing table 1, if the two first fixed oil cylinders are respectively arranged at the front left position and the front right position of the object placing table 1, the two second fixed oil cylinders are respectively arranged at the front right position and the rear right position of the object placing table 1, for convenience of description, the two first fixed oil cylinders are hereinafter referred to as a front left first fixed oil cylinder 4, a rear left first fixed oil cylinder 11, a front right fixed oil cylinder 5, and a rear right fixed oil cylinder 12. Then can only rely on two fixed hydro-cylinders of second and two fixed hydro-cylinders of two first to support and put thing platform 1 like this.
Likewise, in order to also be able to control the two second fixed cylinders, the large and small chambers of the second fixed cylinders are also connected to the unloading valve via the transfer line 18, and the transfer line 18 is also provided with a synchronization valve and an electromagnetic valve connected to the controller.
Referring to fig. 1 to 5 and 9, the emergency unloading process from the loading and unloading equipment includes the following steps:
a. starting a hydraulic control system: and starting the hydraulic oil pump m, outputting oil by the hydraulic oil pump m, and directly returning oil to the oil tank a through the unloading valve YV11 and the oil return filter assembly b.
b. The first translation cylinder 2 at the front left and the first translation cylinder 9 at the rear left translate leftwards simultaneously: the electromagnetic valve YV1 and the unloading valve YV11 are electrified, the large cavities of the first translation oil cylinder 2 in the front left and the first translation oil cylinder 9 in the rear left are filled with oil, piston rods of the large cavities extend out, displacement sensors at the tail parts of the piston rods respectively output signals to a PLC (programmable logic controller), and the PLC controls a synchronizing valve d5 and a synchronizing valve d6 to correct output flow, so that the translation speeds of the two oil cylinders are synchronized; after the first translation cylinder 2 at the front left and the first translation cylinder 9 at the rear left translate leftwards to reach the extreme position, the electromagnetic valve YV1 and the unloading valve YV11 are powered off, and translation stops.
c. The first telescopic oil cylinder 6 at the front left and the first telescopic oil cylinder 13 at the rear left extend downwards simultaneously: the electromagnetic valve YV5 and the unloading valve YV11 are electrified, the first telescopic oil cylinder 6 at the front left and the large cavity of the telescopic oil cylinder at the rear left are filled with oil, the piston rods of the first telescopic oil cylinder and the piston rods of the first telescopic oil cylinder extend downwards, the displacement sensors at the tail parts of the piston rods respectively output signals to the PLC, and the PLC controls the synchronous valve d1 and the synchronous valve d2 to correct output flow so that the translation speeds of the two oil cylinders are synchronous; after piston rods of the first telescopic oil cylinder 6 at the front left and the first telescopic oil cylinder 13 at the rear left contact the ground, the electromagnetic valve YV5 and the unloading valve YV11 are de-energized, and the piston rods stop moving.
d. The first telescopic cylinder 6 in the front left, the first telescopic cylinder 13 in the back left, the second telescopic cylinder 7 in the front right and the second telescopic cylinder 14 in the back right extend downwards simultaneously: the electromagnetic valve YV5, the electromagnetic valve YV7 and the unloading valve YV11 are electrified, the large cavities of the first telescopic oil cylinder 6 at the front left, the first telescopic oil cylinder 13 at the rear left, the second telescopic oil cylinder 7 at the front right and the second telescopic oil cylinder 14 at the rear right are filled with oil, a piston rod of the large cavity stretches out downwards, displacement sensors at the tail part of the piston rod respectively output signals to a PLC (programmable logic controller), and the PLC controls a synchronous valve d1, a synchronous valve d2, a synchronous valve d3 and a synchronous valve d4 to correct output flow, so that the jacking speeds of the four oil cylinders are synchronous; when the bottom surface of the object placing platform 1 is 200mm away from the installation plane 100 and 200mm of the carrying flat car 8, the electromagnetic valve YV5, the electromagnetic valve YV7 and the unloading valve YV11 are powered off, and the four-cylinder jacking action is stopped.
e. The object placing table 1 is horizontally moved leftwards: the electromagnetic valve YV1, the electromagnetic valve YV3 and the unloading valve YV11 are electrified, the first translation oil cylinder 2 in the front left and the first translation oil cylinder 9 in the back left have oil fed into large cavities, the second translation oil cylinder 3 in the front right and the second translation oil cylinder 10 in the back right have oil fed into small cavities, and the object placing table 1 translates leftwards; the displacement sensors at the tail parts of the four piston rods respectively output signals to the PLC, and the PLC controls the synchronous valve d5, the synchronous valve d6, the synchronous valve d7 and the synchronous valve d8 to correct output flow so that the translation speeds of the four oil cylinders are synchronous; after the first translation cylinder 2 at the front left and the first translation cylinder 9 at the rear left translate leftwards to reach the extreme position, the electromagnetic valve YV1, the electromagnetic valve YV3 and the unloading valve YV11 are powered off, and the translation of the object placing table 1 is stopped.
f. The piston rods of the first fixed oil cylinder 4 in front of the left, the first fixed oil cylinder 11 in back of the left, the second fixed oil cylinder 5 in front of the right and the second fixed oil cylinder 12 in back of the right extend downwards simultaneously: the electromagnetic valve YV9 and the unloading valve YV11 are electrified, oil is fed into large cavities of the first fixed oil cylinder 4 at the front left, the first fixed oil cylinder 11 at the rear left, the second fixed oil cylinder 5 at the front right and the second fixed oil cylinder 12 at the rear right, and piston rods of the large cavities extend downwards; the displacement sensors at the tail parts of the four piston rods respectively output signals to the PLC, and the PLC controls the synchronous valve d9, the synchronous valve d10, the synchronous valve d11 and the synchronous valve d12 to correct output flow so that the jacking speeds of the four oil cylinders are synchronous; after the jacking is carried out to the limit position, the electromagnetic valve YV9 and the unloading valve YV11 are de-energized, and the jacking is stopped.
g. The piston rods of the first telescopic oil cylinder 6 at the front left, the first telescopic oil cylinder 13 at the back left, the second telescopic oil cylinder 7 at the front right and the second telescopic oil cylinder 14 at the back right retract upwards: the electromagnetic valve YV6, the electromagnetic valve YV8 and the unloading valve YV11 are electrified, the small cavities of the first telescopic oil cylinder 6 at the front left, the first telescopic oil cylinder 13 at the rear left, the second telescopic oil cylinder 7 at the front right and the second telescopic oil cylinder 14 at the rear right are filled with oil, and the piston rod of the small cavity is retracted upwards; four displacement sensors at the tail parts of the four piston rods respectively output signals to a PLC controller, and the PLC controller controls a synchronous valve d1, a synchronous valve d2, a synchronous valve d3 and a synchronous valve d4 to correct output flow so that retraction speeds of the four oil cylinders are synchronous; after each piston rod retracts to the extreme position, the electromagnetic valve YV6, the electromagnetic valve YV8 and the unloading valve YV11 lose electricity, and the four oil cylinders stop operating.
h. The second translation oil cylinder 3 at the front right and the second translation oil cylinder 10 at the rear right simultaneously translate leftwards: the electromagnetic valve YV3 and the unloading valve YV11 are electrified, oil enters small cavities of the second translation oil cylinder 3 at the front right and the second translation oil cylinder 10 at the rear right, piston rods of the two translation oil cylinders retract, displacement sensors at the tail parts of the two piston rods respectively output signals to a PLC (programmable logic controller), and the PLC controls a synchronous valve d7 and a synchronous valve d8 to correct output flow so that the translation speeds of the two oil cylinders are synchronous; after the second translation oil cylinder 3 at the front right and the second translation oil cylinder 10 at the rear right translate leftwards to reach the extreme positions, the electromagnetic valve YV3 and the unloading valve YV11 are powered off, and translation stops.
i. The carrying platform cart 8 is driven away.
j. The second translation oil cylinder 3 at the front right and the second translation oil cylinder 10 at the rear right translate to the right: the electromagnetic valve YV4 and the unloading valve YV11 are electrified, the large cavities of the right front second translation oil cylinder 3 and the right rear second translation oil cylinder 10 are filled with oil, and the piston rod extends out; the displacement sensors at the tail parts of the two piston rods respectively output signals to the PLC, and the PLC controls the synchronous valve d7 and the synchronous valve d8 to correct output flow so as to synchronize the translation speeds of the two oil cylinders; after the second translation cylinder 3 at the front right and the second translation cylinder 10 at the rear right translate rightwards to reach the extreme position, the electromagnetic valve YV4 and the unloading valve YV11 are powered off, and translation stops.
k. The piston rods of the first telescopic oil cylinder 6 at the front left, the first telescopic oil cylinder 13 at the back left, the second telescopic oil cylinder 7 at the front right and the second telescopic oil cylinder 14 at the back right extend downwards: the electromagnetic valve YV5, the electromagnetic valve YV7 and the unloading valve YV11 are electrified, the large cavities of the first telescopic oil cylinder 6 at the front left, the first telescopic oil cylinder 13 at the rear left, the second telescopic oil cylinder 7 at the front right and the second telescopic oil cylinder 14 at the rear right are filled with oil, and the piston rods of the oil cylinders extend downwards; the four displacement sensors respectively output signals to a PLC controller, and the PLC controller controls a synchronous valve d1, a synchronous valve d2, a synchronous valve d3 and a synchronous valve d4 to correct output flow so as to synchronize the speeds of the four oil cylinders; after the piston rods extend to the limit positions, the electromagnetic valve YV5, the electromagnetic valve YV7 and the unloading valve YV11 are de-energized, and the four-cylinder operation is stopped.
The piston rods of the first fixed oil cylinder 4 in front of the left, the first fixed oil cylinder 11 in back of the left, the second fixed oil cylinder 5 in front of the right and the second fixed oil cylinder 12 in back of the right retract upwards: the electromagnetic valve YV10 and the unloading valve YV11 are electrified, small cavities of the first fixed oil cylinder 4 in the front left, the first fixed oil cylinder 11 in the rear left, the second fixed oil cylinder 5 in the front right and the second fixed oil cylinder 12 in the rear right are filled with oil, and a piston rod of the small cavities is retracted upwards; the four displacement sensors respectively output signals to the PLC, and the PLC controls the synchronous valve d9, the synchronous valve d10, the synchronous valve d11 and the synchronous valve d12 to correct output flow, so that the speeds of the four oil cylinders are synchronous. After the lifting device retracts to the extreme position, the electromagnetic valve YV10 and the unloading valve YV11 are de-energized, and the lifting is stopped.
m, right translation of the object placing table 1: the electromagnetic valve YV2, the electromagnetic valve YV4 and the unloading valve YV11 are electrified, oil is fed into small cavities of the first translation oil cylinder 2 at the front left and the first translation oil cylinder 9 at the rear left, oil is fed into large cavities of the second translation oil cylinder 3 at the front right and the second translation oil cylinder 10 at the rear right, and the object placing table 1 translates rightwards; the displacement sensors at the tail parts of the four piston rods respectively output signals to the PLC, and the PLC controls the synchronous valve d5, the synchronous valve d6, the synchronous valve d7 and the synchronous valve d8 to correct output flow, so that the translation speeds of the four oil cylinders are synchronous; after the first translation oil cylinder 2 at the front left and the first translation oil cylinder 9 at the rear left translate rightwards to reach the extreme position, the electromagnetic valve YV2, the electromagnetic valve YV4 and the unloading valve YV11 are powered off, and the translation of the box body stops.
n, the piston rods of the first telescopic oil cylinder 6 at the front left, the first telescopic oil cylinder 13 at the back left, the second telescopic oil cylinder 7 at the front right and the second telescopic oil cylinder 14 at the back right retract upwards: the electromagnetic valve YV6, the electromagnetic valve YV8 and the unloading valve YV11 are electrified, the small cavities of the first telescopic oil cylinder 6 at the front left, the first telescopic oil cylinder 13 at the rear left, the second telescopic oil cylinder 7 at the front right and the second telescopic oil cylinder 14 at the rear right are filled with oil, and the piston rod of the small cavity is retracted upwards; the four displacement sensors respectively output signals to a PLC controller, and the PLC controller controls a synchronous valve d1, a synchronous valve d2, a synchronous valve d3 and a synchronous valve d4 to correct output flow so as to synchronize the speeds of the four oil cylinders; when the bottom surface of the box body descends to the limit position, the electromagnetic valve YV6, the electromagnetic valve YV8 and the unloading valve YV11 are de-energized, and the four oil cylinders stop operating.
o, the first translation cylinder 2 at the front left and the first translation cylinder 9 at the rear left translate to the right: the electromagnetic valve YV2 and the unloading valve YV11 are electrified, oil is fed into small cavities of the first translation oil cylinder 2 at the front left and the first translation oil cylinder 9 at the rear left, and a piston rod retracts; the displacement sensors at the tail parts of the two piston rods respectively output signals to the PLC, and the PLC controls the synchronous valve d5 and the synchronous valve d6 to correct output flow so as to synchronize the translation speeds of the two oil cylinders; after the first translation cylinder 2 at the front left and the first translation cylinder 9 at the rear left translate rightwards to reach the extreme position, the electromagnetic valve YV2 and the unloading valve YV11 are powered off, and translation stops.
And p, completing the dismounting operation of the object placing table 1, closing the hydraulic control system, and closing the hydraulic oil pump m.
Referring to fig. 6 to 8 and 9, the emergency self-loading/unloading equipment loading process is as follows:
a) starting a hydraulic control system: and starting the hydraulic oil pump m, wherein oil output by the hydraulic oil pump m directly passes through the unloading valve YV11 and returns to the oil filter assembly b and directly returns to the oil tank a.
b) The first translation oil cylinder 2 at the front left and the first translation oil cylinder 9 at the rear left translate leftwards: the electromagnetic valve YV1 and the unloading valve YV11 are electrified, oil is fed into the large cavities of the first translation oil cylinder 2 at the front left and the first translation oil cylinder 9 at the rear left, and the piston rod extends out; the displacement sensors at the tail parts of the two piston rods respectively output signals to the PLC, and the PLC controls the synchronous valve d5 and the synchronous valve d6 to correct output flow so as to synchronize the translation speeds of the two oil cylinders; after the first translation cylinder 2 at the front left and the first translation cylinder 9 at the rear left translate leftwards to reach the extreme position, the electromagnetic valve YV1 and the unloading valve YV11 are powered off, and translation stops.
c) The first telescopic cylinder 6 in the front left, the first telescopic cylinder 13 in the back left, the second telescopic cylinder 7 in the front right and the second telescopic cylinder 14 in the back right extend downwards simultaneously: the electromagnetic valve YV5, the electromagnetic valve YV7 and the unloading valve YV11 are electrified, the large cavities of the first telescopic oil cylinder 6 at the front left, the first telescopic oil cylinder 13 at the rear left, the second telescopic oil cylinder 7 at the front right and the second telescopic oil cylinder 14 at the rear right are filled with oil, and the piston rods of the oil cylinders extend downwards; the four displacement sensors respectively output signals to a PLC (programmable logic controller), and the PLC controls a synchronous valve d1, a synchronous valve d2, a synchronous valve d3 and a synchronous valve d4 to correct output flow so as to synchronize the jacking speeds of the four oil cylinders; when the bottom surface of the object placing platform 1 is separated from the installation plane 100-200mm of the carrying flat car 8, the electromagnetic valve YV5, the electromagnetic valve YV7 and the unloading valve YV11 are powered off, and the four-cylinder jacking action is stopped.
d) The object placing table 1 is horizontally moved leftwards: the electromagnetic valve YV1, the electromagnetic valve YV3 and the unloading valve YV11 are electrified, the first translation oil cylinder 2 in the front left and the first translation oil cylinder 9 in the back left have oil fed into large cavities, the second translation oil cylinder 3 in the front right and the second translation oil cylinder 10 in the back right have oil fed into small cavities, and the object placing table 1 translates leftwards; the displacement sensors at the tail parts of the four piston rods respectively output signals to the PLC, and the PLC controls the synchronous valve d5, the synchronous valve d6, the synchronous valve d7 and the synchronous valve d8 to correct output flow so that the translation speeds of the four oil cylinders are synchronous; after the first translation oil cylinder 2 at the front left and the first translation oil cylinder 9 at the rear left translate leftwards to reach the extreme position, the electromagnetic valve YV1, the electromagnetic valve YV3 and the unloading valve YV11 are powered off, and the translation of the box body stops.
e) The piston rods of the first fixed oil cylinder 4 at the front left, the first fixed oil cylinder 11 at the back left, the second fixed oil cylinder 5 at the front right and the second fixed oil cylinder 12 at the back right stretch out downwards: the electromagnetic valve YV9 and the unloading valve YV11 are electrified, the large cavities of the first fixed oil cylinder 4 at the front left, the first fixed oil cylinder 11 at the rear left, the second fixed oil cylinder 5 at the front right and the second fixed oil cylinder 12 at the rear right are filled with oil, and the piston rods of the oil cylinders extend downwards; the four displacement sensors respectively output signals to the PLC, and the PLC controls the synchronous valve d9, the synchronous valve d10, the synchronous valve d11 and the synchronous valve d12 to correct output flow, so that the jacking speeds of the four oil cylinders are synchronous. After the lifting is carried out to the limit position, the electromagnetic valve YV9 and the unloading valve YV11 are de-energized, and the lifting is stopped.
f) The piston rods of the first telescopic oil cylinder 6 at the front left, the first telescopic oil cylinder 13 at the back left, the second telescopic oil cylinder 7 at the front right and the second telescopic oil cylinder 14 at the back right retract upwards: the electromagnetic valve YV6, the electromagnetic valve YV8 and the unloading valve YV11 are electrified, the small cavities of the first telescopic oil cylinder 6 at the front left, the first telescopic oil cylinder 13 at the rear left, the second telescopic oil cylinder 7 at the front right and the second telescopic oil cylinder 14 at the rear right are filled with oil, and the piston rod of the small cavity is retracted upwards; the four displacement sensors respectively output signals to the PLC, and the PLC controls the synchronous valve d1, the synchronous valve d2, the synchronous valve d3 and the synchronous valve d4 to correct output flow so that retraction speeds of the four oil cylinders are synchronous; after the piston rods retract to the extreme position, the electromagnetic valve YV6, the electromagnetic valve YV8 and the unloading valve YV11 lose power, and the four-cylinder operation stops.
g) The second translation oil cylinder 3 at the front right and the second translation oil cylinder 10 at the rear right translate leftwards: the electromagnetic valve YV3 and the unloading valve YV11 are electrified, oil is fed into small cavities of the second translation oil cylinder 3 at the front right and the second translation oil cylinder 10 at the rear right, and the piston rod retracts; the displacement sensors at the tail parts of the two piston rods respectively output signals to the PLC, and the PLC controls the synchronous valve d7 and the synchronous valve d8 to correct output flow so that the translation speeds of the two oil cylinders are synchronous; after the second translation oil cylinder 3 at the front right and the second translation oil cylinder 10 at the rear right translate leftwards to reach the extreme position, the electromagnetic valve YV3 and the unloading valve YV11 are powered off, and translation stops.
h) The carrying platform lorry 8 drives in.
i) The second translation oil cylinder 3 at the front right and the second translation oil cylinder 10 at the rear right translate to the right: the electromagnetic valve YV4 and the unloading valve YV11 are electrified, the large cavities of the right front second translation oil cylinder 3 and the right rear second translation oil cylinder 10 are filled with oil, and the piston rod extends out; the displacement sensors at the tail parts of the two piston rods respectively output signals to the PLC, and the PLC controls the synchronous valve d7 and the synchronous valve d8 to correct output flow so as to synchronize the translation speeds of the two oil cylinders; after the second translation cylinder 3 at the front right and the second translation cylinder 10 at the rear right translate rightwards to reach the extreme position, the electromagnetic valve YV4 and the unloading valve YV11 are powered off, and translation stops.
j) The piston rods of the first telescopic oil cylinder 6 at the front left, the first telescopic oil cylinder 13 at the back left, the second telescopic oil cylinder 7 at the front right and the second telescopic oil cylinder 14 at the back right extend downwards: the electromagnetic valve YV5, the electromagnetic valve YV7 and the unloading valve YV11 are electrified, the large cavities of the first telescopic oil cylinder 6 at the front left, the first telescopic oil cylinder 13 at the rear left, the second telescopic oil cylinder 7 at the front right and the second telescopic oil cylinder 14 at the rear right are filled with oil, and the piston rods of the oil cylinders extend downwards; the four displacement sensors respectively output signals to a PLC controller, and the PLC controller controls a synchronous valve d1, a synchronous valve d2, a synchronous valve d3 and a synchronous valve d4 to correct output flow so as to synchronize the speeds of the four oil cylinders; after the piston rods extend to the limit positions, the electromagnetic valve YV5, the electromagnetic valve YV7 and the unloading valve YV11 are de-energized, and the four-cylinder operation is stopped.
k) The first telescopic oil cylinder 6 at the front left and the first telescopic oil cylinder 13 at the back left extend downwards: the electromagnetic valve YV5 and the unloading valve YV11 are electrified, oil is fed into the large cavities of the first telescopic oil cylinder 6 at the front left and the first telescopic oil cylinder 13 at the rear left, and the piston rods of the first telescopic oil cylinder 6 and the first telescopic oil cylinder 13 extend downwards; the displacement sensors at the tail parts of the two piston rods respectively output signals to the PLC, and the PLC controls the synchronous valve d1 and the synchronous valve d2 to correct output flow so that the translation speeds of the two oil cylinders are synchronous; after the piston rods of the first telescopic cylinder 6 at the front left and the first telescopic cylinder 13 at the rear left contact the ground, the electromagnetic valve YV5 and the unloading valve YV11 are de-energized, and the piston rods stop moving.
l) the piston rods of the first fixed oil cylinder 4 at the front left, the first fixed oil cylinder 11 at the rear left, the second fixed oil cylinder 5 at the front right and the second fixed oil cylinder 12 at the rear right retract upwards: the electromagnetic valve YV10 and the unloading valve YV11 are electrified, small cavities of the first fixed oil cylinder 4 in the front left, the first fixed oil cylinder 11 in the rear left, the second fixed oil cylinder 5 in the front right and the second fixed oil cylinder 12 in the rear right are filled with oil, and a piston rod of the small cavities is retracted upwards; the four displacement sensors respectively output signals to the PLC, and the PLC controls the synchronous valve d9, the synchronous valve d10, the synchronous valve d11 and the synchronous valve d12 to correct output flow, so that the speeds of the four oil cylinders are synchronous. After the lifting device retracts to the extreme position, the electromagnetic valve YV10 and the unloading valve YV11 are de-energized, and the lifting is stopped.
m) the object placing table 1 is translated rightwards: the electromagnetic valve YV2, the electromagnetic valve YV4 and the unloading valve YV11 are electrified, oil is fed into small cavities of the first translation oil cylinder 2 at the front left and the first translation oil cylinder 9 at the rear left, oil is fed into large cavities of the second translation oil cylinder 3 at the front right and the second translation oil cylinder 10 at the rear right, and the object placing table 1 translates rightwards; the displacement sensors at the tail parts of the four piston rods respectively output signals to the PLC, and the PLC controls the synchronous valve d5, the synchronous valve d6, the synchronous valve d7 and the synchronous valve d8 to correct output flow so that the translation speeds of the four oil cylinders are synchronous; after the first translation oil cylinder 2 at the front left and the first translation oil cylinder 9 at the rear left translate rightwards to reach the extreme position, the electromagnetic valve YV2, the electromagnetic valve YV4 and the unloading valve YV11 are powered off, and the translation of the box body stops.
n) the first telescopic oil cylinder 6 at the front left, the first telescopic oil cylinder 13 at the back left, the second telescopic oil cylinder 7 at the front right and the second telescopic oil cylinder 14 at the back right retract upwards simultaneously: the electromagnetic valve YV6, the electromagnetic valve YV8 and the unloading valve YV11 are electrified, the small cavities of the first telescopic oil cylinder 6 at the front left, the first telescopic oil cylinder 13 at the rear left, the second telescopic oil cylinder 7 at the front right and the second telescopic oil cylinder 14 at the rear right are filled with oil, and the piston rod of the small cavity is retracted upwards; the four displacement sensors respectively output signals to a PLC controller, and the PLC controller controls a synchronous valve d1, a synchronous valve d2, a synchronous valve d3 and a synchronous valve d4 to correct output flow so as to synchronize the speeds of the four oil cylinders; when the bottom surface of the object placing table 1 descends to the limit position and falls into the carrying flat car 8, the electromagnetic valve YV6, the electromagnetic valve YV8 and the unloading valve YV11 are powered off, and the four oil cylinders stop operating.
o) the first translation cylinder 2 at the front left and the first translation cylinder 9 at the rear left translate to the right: the electromagnetic valve YV2 and the unloading valve YV11 are electrified, oil is fed into small cavities of the first translation oil cylinder 2 at the front left and the first translation oil cylinder 9 at the rear left, and a piston rod retracts; the displacement sensors at the tail parts of the two piston rods respectively output signals to the PLC, and the PLC controls the synchronous valve d5 and the synchronous valve d6 to correct output flow so that the translation speeds of the two oil cylinders are synchronous; after the first translation cylinder 2 at the front left and the first translation cylinder 9 at the rear left translate rightwards to reach the extreme position, the electromagnetic valve YV2 and the unloading valve YV11 are powered off, and translation stops.
p) the object placing table 1 is dismounted, the hydraulic control system is closed, and the hydraulic oil pump m is closed.
It should be noted that, although the above embodiments have been described herein, the invention is not limited thereto. Therefore, based on the innovative concepts of the present invention, the technical solutions of the present invention can be directly or indirectly applied to other related technical fields by changing and modifying the embodiments described herein or by using the equivalent structures or equivalent processes of the content of the present specification and the attached drawings, and are included in the scope of the present invention.
Claims (6)
1. A hydraulic control system is characterized by comprising an oil supply mechanism, a translation mechanism, a telescopic mechanism, a fixing mechanism, an unloading valve and a controller;
the translation mechanism comprises a first translation oil cylinder and a second translation oil cylinder, and the output end of the first translation oil cylinder and the output end of the second translation oil cylinder face two different directions respectively;
the telescopic mechanism comprises a first telescopic oil cylinder and a second telescopic oil cylinder, the first telescopic oil cylinder is arranged at the output end of the first translation oil cylinder, and the second telescopic oil cylinder is arranged at the output end of the second translation oil cylinder;
the fixing mechanism is arranged below the translation mechanism and comprises a first fixing oil cylinder and a second fixing oil cylinder, and the output end of the first telescopic oil cylinder, the output end of the second telescopic oil cylinder, the output end of the first fixing oil cylinder and the output end of the second fixing oil cylinder are all arranged downwards;
the oil supply mechanism is used for supplying oil to the translation mechanism, the telescopic mechanism and the fixing mechanism, and the translation mechanism, the telescopic mechanism and the fixing mechanism are mutually matched so as to unload or load emergency materials onto the flat carrier loader from the upper part of the flat carrier loader; the oil supply mechanism comprises an oil tank and a hydraulic oil pump; an oil inlet hole of the hydraulic oil pump is connected with an oil tank through a first oil inlet pipe; an oil outlet hole of the hydraulic oil pump is connected with an unloading valve through a second oil inlet pipe, and the unloading valve is connected with an oil tank through an oil outlet pipe; the first translation oil cylinder, the second translation oil cylinder, the first telescopic oil cylinder, the second telescopic oil cylinder, the first fixed oil cylinder and the second fixed oil cylinder are all connected with the oil tank and the oil outlet hole of the hydraulic oil pump;
the large cavity and the small cavity of the first translation oil cylinder, the second translation oil cylinder, the first telescopic oil cylinder, the second telescopic oil cylinder, the first fixed oil cylinder and the second fixed oil cylinder are connected with the unloading valve through oil conveying pipes; each oil conveying pipe is provided with a synchronous valve and an electromagnetic valve; the controller is connected with the electromagnetic valve and the synchronous valve, and the controller is connected with the hydraulic oil pump and the unloading valve;
the unloading operation flow of the hydraulic control system is as follows:
a. starting a hydraulic control system;
b. the first translation oil cylinder translates leftwards;
c. the first telescopic oil cylinder extends downwards to contact the ground;
d. the first telescopic oil cylinder and the second telescopic oil cylinder are lifted upwards;
e. the object placing table moves horizontally leftwards;
f. the piston rods of the first fixed oil cylinder and the second fixed oil cylinder extend downwards simultaneously:
g. the piston rods of the first telescopic oil cylinder and the second telescopic oil cylinder retract upwards:
h. the second translation oil cylinder translates leftwards;
i. the carrying flat car drives away;
j. the second translation oil cylinder translates rightwards;
k. piston rods of the first telescopic oil cylinder and the second telescopic oil cylinder extend downwards;
l, piston rods of the first fixed oil cylinder and the second fixed oil cylinder retract upwards;
m, translating the object placing table to the right;
n, piston rods of the first telescopic oil cylinder and the second telescopic oil cylinder retract upwards;
o, translating the first translation oil cylinder to the right;
p, completing the dismounting operation of the object placing table;
the step d comprises the following steps: piston rods of the first telescopic oil cylinder and the second telescopic oil cylinder extend downwards, the PLC controls the synchronous valve to correct output flow, so that the jacking speeds of the four oil cylinders are synchronous, and when the bottom surface of the object placing table is 200mm away from the mounting plane of the carrying flat car by 100 mm, the PLC controls the electromagnetic valve to stop jacking actions of the four oil cylinders.
2. The hydraulic control system of claim 1, wherein the synchronizing valve is a hydraulic bridge consisting of four one-way valves and one electro-hydraulic proportional speed regulating valve; and displacement sensors are arranged at the tail ends of piston rods of the first translation oil cylinder, the second translation oil cylinder, the first telescopic oil cylinder, the second telescopic oil cylinder, the first fixed oil cylinder and the second fixed oil cylinder, and the displacement sensors are connected with a controller.
3. The hydraulic control system of claim 1, further comprising a relief valve, wherein the second inlet line and the outlet line are connected to the relief valve.
4. The hydraulic control system of claim 1, wherein the oil outlet line is provided with an oil return filter assembly.
5. The hydraulic control system of claim 1, wherein there are two translation mechanisms, and the two translation mechanisms are respectively arranged in parallel front and back;
the first telescopic oil cylinders and the second telescopic oil cylinders are respectively provided with two, the two first telescopic oil cylinders are respectively arranged at the output ends of the two first translation oil cylinders, and the two second telescopic oil cylinders are respectively arranged at the output ends of the two second translation oil cylinders;
the first fixed oil cylinder and the second fixed oil cylinder are both provided with two oil cylinders, the two first fixed oil cylinders are respectively arranged below the two translation mechanisms, and the two second fixed oil cylinders are also respectively arranged below the two translation mechanisms.
6. An emergency self-loading and unloading device, which is characterized by comprising a storage table and a hydraulic control system, wherein the hydraulic control system is the hydraulic control system of any one of claims 1 to 5; the object placing table is arranged on the translation mechanism and used for placing emergency materials.
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