CN111237270B - Rescue equipment vehicle - Google Patents
Rescue equipment vehicle Download PDFInfo
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- CN111237270B CN111237270B CN202010164213.3A CN202010164213A CN111237270B CN 111237270 B CN111237270 B CN 111237270B CN 202010164213 A CN202010164213 A CN 202010164213A CN 111237270 B CN111237270 B CN 111237270B
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- oil
- reversing valve
- valve
- cylinder
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Classifications
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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
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
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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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention relates to a rescue equipment vehicle, comprising: rescue equipment; a frame formed with a storage place for accommodating rescue tools; and a hydraulic system provided to the frame, the hydraulic system including: the oil cylinder is connected to the rescue tool in a driving way, and is configured to retract the rescue tool to the storage position and take out the rescue tool from the storage position; the main reversing valve is connected with the oil cylinder through an oil way, and comprises a first station and a second station, wherein the main reversing valve is arranged at the first station, hydraulic oil enters a rodless cavity of the oil cylinder through the main reversing valve so as to drive a cylinder rod of the oil cylinder to extend, and the main reversing valve is arranged at the second station, and hydraulic oil enters a rod cavity of the oil cylinder through the main reversing valve so as to drive the cylinder rod of the oil cylinder to retract; an oil tank; and a pump, the input end of which is connected to the oil tank through an oil path, the output end of which is connected to the main reversing valve through an oil path, the pump being configured to pump the hydraulic oil in the oil tank to the main reversing valve. The invention has convenient operation, saves labor and improves rescue efficiency.
Description
Technical Field
The invention relates to the field of fire rescue, in particular to a rescue equipment vehicle.
Background
When a rescue worker takes and puts rescue equipment, the higher-placed and heavier equipment needs to be taken and put by an auxiliary mechanism, such as a pedal, a lifting mechanism and the like; most of the traditional auxiliary mechanisms are manually operated, and when facing some complicated and heavy auxiliary mechanisms such as pedal mechanisms, lifting mechanisms and the like, manual operation is time-consuming and labor-consuming, the rescue efficiency is affected, and some complicated and heavy equipment is inconvenient to manually retract and release.
Disclosure of Invention
Some embodiments of the invention provide a rescue equipment vehicle for alleviating the problem of inconvenient taking of rescue equipment.
Some embodiments of the invention provide a rescue fixture vehicle comprising:
Rescue equipment;
a frame formed with a storage place for accommodating the rescue tool; and
The hydraulic system is located the frame, the hydraulic system includes:
A cylinder, a cylinder rod of which is drivingly connected to the rescue tool, the cylinder being configured to retract the rescue tool to the storage location and to take the rescue tool out of the storage location;
The main reversing valve is connected with the oil cylinder through an oil way, and comprises a first station and a second station, wherein the main reversing valve is arranged at the first station, hydraulic oil enters a rodless cavity of the oil cylinder through the main reversing valve to drive a cylinder rod of the oil cylinder to extend out, and the main reversing valve is arranged at the second station, and hydraulic oil enters a rod cavity of the oil cylinder through the main reversing valve to drive the cylinder rod of the oil cylinder to retract;
An oil tank; and
The input end of the pump is connected with the oil tank through an oil way, the output end of the pump is connected with the main reversing valve through an oil way, and the pump is configured to enable a hydraulic oil pump in the oil tank to flow to the main reversing valve.
In some embodiments, the hydraulic system includes a balance valve disposed in an oil path between the main directional valve and the cylinder.
In some embodiments, the hydraulic system includes a throttle valve disposed in an oil path between the output of the pump and the main reversing valve.
In some embodiments, the hydraulic system includes a first branch, an oil return path, and an overflow valve, wherein a first end of the first branch is connected to the path between the output end of the pump and the main reversing valve, a second end of the first branch is connected to the oil return path, the oil return path is connected to the oil tank, and the overflow valve is provided in the first branch.
In some embodiments, the hydraulic system includes a second branch, an oil return path, and a secondary reversing valve, a first end of the second branch is connected to the path between the output end of the pump and the primary reversing valve, a second end of the second branch is connected to the oil return path, the oil return path is connected to the oil tank, and the secondary reversing valve is provided in the second branch;
The secondary reversing valve comprises a first station and a second station, the secondary reversing valve is arranged at the first station, the second branch is cut off, the secondary reversing valve is arranged at the second station, and the second branch is communicated.
In some embodiments, the hydraulic system includes a filter disposed in the return oil passage.
In some embodiments, the main reversing valve is connected to the return oil line.
In some embodiments, the main diverter valve further comprises a third station where the oil path between the output of the pump and the cylinder is blocked.
In some embodiments, the rescue apparatus includes at least one of rescue equipment, a pedal to assist in taking and placing the rescue equipment, a case to which the rescue equipment is preset, and a generator.
In some embodiments, the rescue equipment vehicle comprises three oil cylinders, namely a first oil cylinder, a second oil cylinder and a third oil cylinder; the main reversing valves are respectively a first main reversing valve, a second main reversing valve and a third main reversing valve; the first main reversing valve is arranged on an oil way between the output end of the pump and the first oil cylinder, the second main reversing valve is arranged on an oil way between the output end of the pump and the second oil cylinder, the third main reversing valve is arranged on an oil way between the output end of the pump and the third oil cylinder, the first oil cylinder is in driving connection with the pedal, the second oil cylinder is in driving connection with the box, and the third oil cylinder is in driving connection with the generator.
Based on the technical scheme, the invention has at least the following beneficial effects:
In some embodiments, hydraulic oil in the power driving oil tank is provided by the pump to enter the main reversing valve, and the hydraulic oil is enabled to enter a rod cavity or a rodless cavity of the oil cylinder through the switching of the stations of the main reversing valve so as to drive the extension and retraction of a cylinder rod of the oil cylinder, the cylinder rod of the oil cylinder is connected with the rescue tool in a driving manner, the rescue tool is taken out or retracted through the extension and retraction of the cylinder rod of the oil cylinder, the operation is convenient, the physical strength and time of rescue workers are greatly saved, and the rescue efficiency is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
Fig. 1 is a schematic view of a rescue fixture vehicle provided according to some embodiments of the present invention.
Fig. 2 is a schematic diagram of a hydraulic control principle of a rescue equipment vehicle according to some embodiments of the present invention.
The reference numbers in the drawings are as follows:
1-a hydraulic system;
11-an oil cylinder; 111-a first oil cylinder; 112-a second cylinder; 113-a third cylinder;
12-a main reversing valve; 121-a first main reversing valve; 122-a second main reversing valve; 123-a third main reversing valve;
13-an oil tank;
14-a pump;
15-balancing valves; 151-a first balancing valve; 152-a second balancing valve; 153-a third balancing valve;
16-throttle valve; 161-a first throttle valve; 162-a second throttle valve; 163-third throttle valve;
17-overflow valve;
18-times reversing valve;
19-a filter;
2-a frame;
3-rescue appliances; 31-pedal; 32-box.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
In the description of the present invention, it should be understood that the terms "center," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present invention.
As shown in fig. 1, a rescue fixture vehicle provided for some embodiments includes: rescue equipment 3, a frame 2 and a hydraulic system 1.
The frame 2 is formed with a storage place for accommodating the rescue tool 3. The hydraulic system 1 is provided to the frame 2.
As shown in fig. 2, the hydraulic system 1 includes an oil cylinder 11, a main directional valve 12, an oil tank 13, and a pump 14.
The cylinder rod of the cylinder 11 is drivingly connected to the rescue tool 3, the cylinder 11 being configured to retract the rescue tool 3 to a storage position, the cylinder 11 being further configured to remove the rescue tool 3 from the storage position. That is, the rescue tool 3 is taken out and put in by the extension and contraction of the cylinder rod of the cylinder 11.
The main reversing valve 12 is connected with the oil cylinder 11 through an oil way, the main reversing valve 12 comprises a first station and a second station, and hydraulic oil enters a rodless cavity of the oil cylinder 11 through the main reversing valve 12 at the first station so as to drive a cylinder rod of the oil cylinder 11 to extend; the main directional valve 12 is in the second station, hydraulic oil enters the rod cavity of the oil cylinder 11 through the main directional valve 12 to drive the cylinder rod of the oil cylinder 11 to retract. The rescue tool 3 is correspondingly taken out or recovered by extending or retracting the cylinder rod of the cylinder 11.
In some embodiments, the main diverter valve 12 further includes a third position where the main diverter valve 12 is in a closed-off configuration with respect to the oil line between the output of the pump 14 and the cylinder 11.
Alternatively, the main directional valve 12 is an electromagnetic directional valve.
The input end of the pump 14 is connected to the oil tank 13 through an oil passage, the output end of the pump 14 is connected to the main directional valve 12 through an oil passage, and the pump 14 is configured to pump the hydraulic oil in the oil tank 13 to the main directional valve 12.
Alternatively, pump 14 comprises a direct current motor pump.
In some embodiments, the hydraulic oil in the power driving oil tank 13 is provided by the pump 14 to enter the main reversing valve 12, and the hydraulic oil is enabled to enter the rod cavity or the rodless cavity of the oil cylinder 11 through the switching of the stations of the main reversing valve 12 so as to drive the extension and retraction of the cylinder rod of the oil cylinder 11, the cylinder rod of the oil cylinder 11 is driven to be connected with the rescue tool 3, and the rescue tool 3 is taken out or retracted through the extension and retraction of the cylinder rod of the oil cylinder 11, namely, the manual taking and placing of the rescue tool is replaced by a hydraulic system, so that the operation is convenient, the physical strength and time of rescue workers are greatly saved, and the rescue efficiency is improved.
In some embodiments, rescue fixture 3 includes at least one of a rescue fixture, a pedal 31 to assist in taking and placing the rescue fixture, a box 32 pre-set with the rescue fixture, and a generator.
As shown in fig. 1, a pedal 31 is provided on a frame 2, a hydraulic system 1 provides power to drive the pedal 31 to expand or contract, the pedal 31 expands to provide rescue equipment for a rescue worker to get on or off a rescue equipment vehicle to take and put the rescue equipment, and the rescue equipment is conveniently placed on the pedal 31 so as to take or retract the rescue equipment.
The rescue equipment is preset in the box 32, the hydraulic system 1 is used for providing power to take the box 32 out of the storage position, rescue workers are convenient to carry the box 32 and the rescue equipment preset in the box to the rescue site, and the hydraulic system 1 is also used for providing power to retract the box 32 and the rescue equipment preset in the box to the storage position.
The generator is arranged at a storage position on the frame 2, the hydraulic system 1 is used for providing power to take the generator out of the storage position so that rescue workers can carry the generator to a rescue site, and the hydraulic system 1 is also used for providing power to retract the generator into the storage position.
In some embodiments, one of the pedal 31, the box 32, and the generator is selected to be taken out or retracted, or two of the pedal 31, the box 32, and the generator are selected to be taken out or retracted simultaneously, or three of the pedal 31, the box 32, and the generator are selected to be taken out or retracted simultaneously, as the case may be. Alternatively, the pedal 31 includes a third-order pedal.
In some embodiments, the main diverter valve 12 includes a first station, a second station, and a third station, the main diverter valve 12 includes a first port, a second port, a third port, and a fourth port, the first port of the main diverter valve 12 is connected to an output of the pump 14, the second port of the main diverter valve 12 is connected to the tank 13, the third port of the main diverter valve 12 is connected to a rod cavity of the cylinder 11, and the fourth port of the main diverter valve 12 is connected to a rod-less cavity of the cylinder 11.
The main reversing valve 12 is at the first station, a first oil port of the main reversing valve 12 is communicated with a fourth oil port, and a second oil port is communicated with a third oil port. The main reversing valve 12 is at the second station, the first oil port of the main reversing valve 12 is communicated with the third oil port, and the second oil port is communicated with the fourth oil port. The main reversing valve 12 is at the third station, the first oil port of the main reversing valve 12 is cut off, and the second oil port is communicated with the third oil port and the fourth oil port.
Alternatively, the main reversing valve 12 includes a three-position four-way solenoid valve.
In some embodiments, the hydraulic system 1 includes a balance valve 15, the balance valve 15 being provided in an oil path between the main directional valve 12 and the cylinder 11. The balance valve 15 is used for locking any position of the rescue tool 3, and when the main reversing valve 12 is at the third station, the balance valve 15 is used for cutting off the flow of hydraulic oil, so that the action of the oil cylinder 11 is locked.
In some embodiments, the hydraulic system 1 includes a throttle valve 16, the throttle valve 16 being provided in an oil path between the output of the pump 14 and the main directional valve 12. The throttle valve 16 is used for adjusting the flow rate of the hydraulic oil entering the oil cylinder 11 so as to control the speed of the retraction movement of the rescue tool 3.
In some embodiments, the hydraulic system 1 includes a first branch, an oil return path, and an overflow valve 17, where a first end of the first branch is connected to the path between the output end of the pump 14 and the main directional valve 12, a second end of the first branch is connected to the oil return path, the oil return path is connected to the oil tank 13, and the overflow valve 17 is provided in the first branch. The relief valve 17 serves as a safety function for the hydraulic system.
In some embodiments, the hydraulic system 1 includes a second branch, an oil return path, and a secondary reversing valve 18, where a first end of the second branch is connected to the path between the output end of the pump 14 and the primary reversing valve 12, a second end of the second branch is connected to the oil return path, the oil return path is connected to the oil tank 13, and the secondary reversing valve 18 is disposed in the second branch.
The secondary reversing valve 18 comprises a first station and a second station, the secondary reversing valve 18 is at the first station, the second branch is cut off, hydraulic oil output by the output end of the pump 14 cannot flow to the oil tank 13 through the secondary reversing valve 18, the secondary reversing valve 18 is at the second station, the second branch is communicated, and hydraulic oil output by the output end of the pump 14 flows to the oil tank 13 through the secondary reversing valve 18.
Optionally, the secondary reversing valve 18 comprises a solenoid reversing valve. The secondary reversing valve 18 includes a solenoid Y7, the solenoid Y7 being energized and the secondary reversing valve 18 being in the first position.
Alternatively, the secondary reversing valve 18 comprises a two-position, two-way electromagnetic reversing valve.
The secondary reversing valve 18 includes a first station, a second station, a first port, a second port, and a check valve. The first oil port of the secondary reversing valve 18 is connected with the output end of the pump 14, and the second oil port of the secondary reversing valve 18 is connected with the oil tank 13. The secondary reversing valve 18 is arranged at the first station, an oil way between a first oil port and a second oil port of the secondary reversing valve 18 is provided with a one-way valve, an inlet of the one-way valve is communicated with the second oil port of the secondary reversing valve 18, an outlet of the one-way valve is communicated with the first oil port of the secondary reversing valve 18, and the secondary reversing valve 18 is arranged at the second station, and the first oil port and the second oil port of the secondary reversing valve 18 are communicated.
In the actual working process, the main reversing valve 12 is matched with the secondary reversing valve 18, the secondary reversing valve 18 is positioned at the first station in the using process of the main reversing valve 12, namely the electromagnet Y7 in fig. 1 is powered, hydraulic oil output by the output end of the pump 14 cannot flow to the oil tank 13 through the secondary reversing valve 18, and the hydraulic oil can be prevented from directly flowing back to the oil tank 13 from the output end of the pump 14 through the secondary reversing valve 18, so that the rescue apparatus 3 cannot act.
In some embodiments, the hydraulic system 1 includes a filter 19, the filter 19 being provided in the return oil passage.
In some embodiments, the main diverter valve 12 is connected to an oil return line.
In some embodiments, as shown in fig. 2, three cylinders 11 are provided, a first cylinder 111, a second cylinder 112, and a third cylinder 113, respectively. Three main directional valves 12 are provided, namely a first main directional valve 121, a second main directional valve 122 and a third main directional valve 123.
The first main reversing valve 121 is arranged in an oil way between the output end of the pump 14 and the first oil cylinder 111, the second main reversing valve 122 is arranged in an oil way between the output end of the pump 14 and the second oil cylinder 112, the third main reversing valve 123 is arranged in an oil way between the output end of the pump 14 and the third oil cylinder 113, the first oil cylinder 111 is in driving connection with the pedal 31, the second oil cylinder 112 is in driving connection with the box 32, and the third oil cylinder 113 is in driving connection with the generator.
Wherein the first cylinder 111 is used for driving the expansion and contraction of the pedal 31. The second cylinder 112 is used for driving the lifting of the box 32. The third cylinder 113 is used for driving the generator to lift and lower.
The first main directional valve 121 includes an electromagnet Y1 and an electromagnet Y2, the electromagnet Y1 is powered, the first main directional valve 121 is in a first station, the electromagnet Y2 is powered, and the first main directional valve 121 is in a second station.
The second main directional valve 122 includes an electromagnet Y3 and an electromagnet Y4, the electromagnet Y3 is powered, the second main directional valve 122 is in the first station, the electromagnet Y4 is powered, and the second main directional valve 122 is in the second station.
The third main directional valve 123 includes an electromagnet Y5 and an electromagnet Y6, the electromagnet Y5 is powered, the third main directional valve 123 is in the first station, the electromagnet Y6 is powered, and the third main directional valve 123 is in the second station.
In some embodiments, the hydraulic system 1 includes three balancing valves 15, a first balancing valve 151, a second balancing valve 152, and a third balancing valve 153, respectively. The first balance valve 151 is provided in an oil path between the first main directional valve 121 and the first cylinder 111. The second balance valve 152 is provided in an oil path between the second main directional valve 122 and the second cylinder 112. The third balance valve 153 is provided in an oil path between the third main directional valve 123 and the third cylinder 113.
The first balance valve 151 includes an A1 port and an A2 port, the A1 port being connected to the rod-shaped chamber of the first cylinder 111, the A2 port being connected to the rod-free chamber of the first cylinder 111.
The second balance valve 152 includes a port B1 and a port B2, the port B1 being connected to the rod-shaped cavity of the second cylinder 112 and the port B2 being connected to the rod-free cavity of the second cylinder 112.
The third balance valve 153 includes a C1 port and a C2 port, the C1 port being connected to the rod-shaped cavity of the third cylinder 113, and the C2 port being connected to the rod-free cavity of the third cylinder 113.
The hydraulic system 1 further comprises three throttle valves 16, a first throttle valve 161, a second throttle valve 162 and a third throttle valve 163, respectively. The first throttle 161 is provided in an oil path between the output end of the pump 14 and the first main directional valve 121. The second throttle valve 162 is provided in an oil path between the output end of the pump 14 and the second main directional valve 122. The third throttle valve 163 is provided in an oil path between the output end of the pump 14 and the third main directional valve 123.
When the rescue tool 3 is not operated after the pump 14 is started: the hydraulic oil returns to the oil tank 13 from the oil tank 13 to the pump 14 through the secondary reversing valve 18 and the filter 19 to form a closed loop, at this time, the electromagnet Y7 of the secondary reversing valve 18 is not electrified, and the secondary reversing valve 18 is at the second station, so that energy loss is reduced.
After pump 14 is turned on, the hydraulic system is hydraulically greater than the set pressure due to excessive load: hydraulic oil reaches the overflow valve 17 from the oil tank 13 through the pump 14, the overflow valve 17 is opened, the hydraulic oil returns to the oil tank 13 after passing through the overflow valve 17 and the filter 19 to form a closed loop, at the moment, the electromagnet Y7 is electrified, and the secondary reversing valve 18 is positioned at the first station. The circuit is mainly used for preventing the damage of the excessive pressure to the components of the hydraulic system and damaging the hydraulic system when the load exceeds the working pressure of the system.
In some embodiments, the steps 31, the case 32 and the generator are substantially the same, and the steps 31 are extended and retracted as an example.
Deployment of the pedal 31: hydraulic oil reaches the first main reversing valve 121 from the oil tank 13 through the pump 14 and the first throttle valve 161, the electromagnet Y1 is electrified, the first main reversing valve 121 is positioned at a first station, the hydraulic oil reaches the first balance valve 151 after passing through the first main reversing valve 121, enters a rodless cavity of the first oil cylinder 111 through an A2 port of the first balance valve 151, the hydraulic oil pushes a cylinder rod of the first oil cylinder 111 to extend out, the hydraulic oil with a rod cavity of the first oil cylinder 111 is forced to flow out, reaches the first main reversing valve 121 through an A1 port of the first balance valve 151, and then returns to the oil tank 13 through the filter 19 to form a closed loop, at the moment, the electromagnet Y7 is electrified, the secondary reversing valve 18 is positioned at the first station, and the expansion of the pedal 31 is completed.
Retraction of pedal 31: hydraulic oil reaches the first main reversing valve 121 from the oil tank 13 through the pump 14 and the first throttle valve 161, the electromagnet Y2 is powered, the first main reversing valve 121 is in the second station, the hydraulic oil reaches the first balance valve 151 through the first main reversing valve 121, then enters a rod cavity of the first oil cylinder 111 through an A1 port of the first balance valve 151, pushes a cylinder rod of the first oil cylinder 111 to shrink, forces hydraulic oil in a rodless cavity of the first oil cylinder 111 to flow out, reaches the first main reversing valve 121 after passing through an A2 port of the first balance valve 151, and then returns to the oil tank 13 through the filter 19 to form a closed loop, at the moment, the electromagnet Y7 is powered, the secondary reversing valve 18 is in the first station, and shrinkage of the pedal 31 is completed.
When the pedal 31, the box 32 and the engine are taken out simultaneously and the cylinder rods of the three cylinders extend simultaneously, hydraulic oil is divided into three paths after flowing out from the oil tank 13 through the pump 14:
The first path reaches the rodless cavity of the first cylinder 111 through the first throttle 161, the first station of the first main reversing valve 121 and the port A2 of the first balancing valve 151, and the hydraulic oil in the rod cavity of the first cylinder 111 returns to the oil tank 13 through the port A1 of the first balancing valve 151, the first station of the first main reversing valve 12 and the filter 19.
The second path reaches the rodless cavity of the second cylinder 112 through the second throttle 162, the first station of the second main directional valve 122, and the port B2 of the second balancing valve 152, and the hydraulic oil in the rod cavity of the second cylinder 112 returns to the tank 13 through the port B1 of the second balancing valve 152, the first station of the second main directional valve 122, and the filter 19.
The third path reaches the rodless cavity of the third oil cylinder 113 through the third throttle valve 163, the first station of the third main directional valve 123 and the C2 port of the third balance valve 153, and the hydraulic oil in the rod cavity of the third oil cylinder 113 returns to the oil tank 13 through the C1 port of the third balance valve 153, the first station of the third main directional valve 123 and the filter 19.
The three paths of hydraulic oil are all collected together and returned to the oil tank 13 after passing through the filter 19 to form a closed loop, at the moment, the electromagnet Y1, the electromagnet Y3 and the electromagnet Y5 are powered on, meanwhile, the electromagnet Y7 is powered on, the secondary reversing valve 18 is positioned at the first station, and the rescue tool 3 is taken out simultaneously.
In some embodiments, the rescue tool 3 is driven by the hydraulic system 1, so that the rescue tool can be conveniently and quickly taken out; and can realize taking and retrieving simultaneously of each rescue equipment, save rescue time, improve rescue efficiency.
In the description of the present invention, it should be understood that the terms "first," "second," "third," etc. are used for defining components, and are merely for convenience in distinguishing the components, and if not otherwise stated, the terms are not to be construed as limiting the scope of the present invention.
In addition, features of one embodiment may be beneficially incorporated in one or more other embodiments without explicit negation.
Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical scheme of the present invention and are not limiting; while the invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present invention or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the invention, it is intended to cover the scope of the invention as claimed.
Claims (9)
1. A rescue equipment vehicle, comprising:
rescue equipment (3);
A frame (2) formed with a storage site for accommodating the rescue tool (3); and
The hydraulic system (1) is arranged on the frame (2), and the hydraulic system (1) comprises:
-a cylinder (11), a cylinder rod of the cylinder (11) being drivingly connected to the rescue tool (3), the cylinder (11) being configured to retract the rescue tool (3) to the storage location and to withdraw the rescue tool (3) from the storage location;
The main reversing valve (12) is connected with the oil cylinder (11) through an oil way, the main reversing valve (12) comprises a first station and a second station, hydraulic oil enters a rodless cavity of the oil cylinder (11) through the main reversing valve (12) at the first station so as to drive a cylinder rod of the oil cylinder (11) to extend, and hydraulic oil enters a rod cavity of the oil cylinder (11) through the main reversing valve (12) at the second station so as to drive the cylinder rod of the oil cylinder (11) to retract;
An oil tank (13); and
A pump (14) having an input end connected to the oil tank (13) through an oil passage and an output end connected to the main directional valve (12) through an oil passage, the pump (14) being configured to pump the hydraulic oil in the oil tank (13) to the main directional valve (12);
The oil return device comprises a second branch, an oil return path and a secondary reversing valve (18), wherein a first end of the second branch is connected with an oil path between the output end of the pump (14) and the main reversing valve (12), a second end of the second branch is connected with the oil return path, the oil return path is connected with the oil tank (13), and the secondary reversing valve (18) is arranged on the second branch;
The secondary reversing valve (18) comprises a first station, a second station, a first oil port, a second oil port and a one-way valve; the first oil port of the secondary reversing valve (18) is connected with the output end of the pump (14), and the second oil port of the secondary reversing valve (18) is connected with the oil tank (13); the secondary reversing valve (18) is arranged at a first station, an oil way between a first oil port and a second oil port of the secondary reversing valve (18) is provided with a one-way valve, an inlet of the one-way valve is communicated with the second oil port of the secondary reversing valve (18), an outlet of the one-way valve is communicated with the first oil port of the secondary reversing valve (18), the secondary reversing valve (18) is arranged at a second station, and the first oil port and the second oil port of the secondary reversing valve (18) are communicated.
2. Rescue equipment vehicle as claimed in claim 1, characterized in that the hydraulic system (1) comprises a balancing valve (15), the balancing valve (15) being arranged in the oil path between the main reversing valve (12) and the oil cylinder (11).
3. Rescue equipment vehicle as claimed in claim 1, characterized in that the hydraulic system (1) comprises a throttle valve (16), which throttle valve (16) is arranged in the oil circuit between the output of the pump (14) and the main reversing valve (12).
4. Rescue equipment vehicle as claimed in claim 1, characterized in that the hydraulic system (1) comprises a first branch, an oil return line and an overflow valve (17), a first end of the first branch being connected to the line between the output of the pump (14) and the main reversing valve (12), a second end of the first branch being connected to the oil return line, the oil return line being connected to the oil tank (13), the overflow valve (17) being provided in the first branch.
5. Rescue equipment vehicle as claimed in claim 1 or 4, characterized in that the hydraulic system (1) comprises a filter (19), which filter (19) is provided in the return oil circuit.
6. Rescue equipment vehicle as claimed in claim 1 or 4, characterized in that the main reversing valve (12) is connected to the return oil circuit.
7. Rescue equipment vehicle as claimed in claim 1, characterized in that the main reversing valve (12) further comprises a third station, in which the main reversing valve (12) is in a stop of the oil circuit between the output of the pump (14) and the oil cylinder (11).
8. Rescue equipment vehicle as claimed in claim 1, characterized in that the rescue equipment (3) comprises at least one of rescue equipment, a pedal (31) assisting in taking and putting the rescue equipment, a box (32) pre-arranged with the rescue equipment and a generator.
9. Rescue equipment vehicle as claimed in claim 8, characterized by comprising three of said cylinders (11), a first cylinder (111), a second cylinder (112) and a third cylinder (113), respectively; and comprises three main reversing valves (12), namely a first main reversing valve (121), a second main reversing valve (122) and a third main reversing valve (123); the first main reversing valve (121) is arranged on an oil way between the output end of the pump (14) and the first oil cylinder (111), the second main reversing valve (122) is arranged on an oil way between the output end of the pump (14) and the second oil cylinder (112), the third main reversing valve (123) is arranged on an oil way between the output end of the pump (14) and the third oil cylinder (113), the first oil cylinder (111) is in driving connection with the pedal (31), the second oil cylinder (112) is in driving connection with the box (32), and the third oil cylinder (113) is in driving connection with the generator.
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| CN202010164213.3A CN111237270B (en) | 2020-03-11 | 2020-03-11 | Rescue equipment vehicle |
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| CN202010164213.3A CN111237270B (en) | 2020-03-11 | 2020-03-11 | Rescue equipment vehicle |
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| CN111237270B true CN111237270B (en) | 2024-08-30 |
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| CN114321045A (en) * | 2022-01-11 | 2022-04-12 | 徐州徐工道金特种机器人技术有限公司 | A weight reduction control valve, a hydraulic control system using the same, and a mine-sweeping vehicle |
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