CN111237270A - Rescue equipment vehicle - Google Patents
Rescue equipment vehicle Download PDFInfo
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- CN111237270A CN111237270A CN202010164213.3A CN202010164213A CN111237270A CN 111237270 A CN111237270 A CN 111237270A CN 202010164213 A CN202010164213 A CN 202010164213A CN 111237270 A CN111237270 A CN 111237270A
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- oil
- cylinder
- valve
- rescue
- directional control
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- 239000003921 oil Substances 0.000 claims abstract description 201
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 43
- 230000007246 mechanism Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- MFOUDYKPLGXPGO-UHFFFAOYSA-N propachlor Chemical compound ClCC(=O)N(C(C)C)C1=CC=CC=C1 MFOUDYKPLGXPGO-UHFFFAOYSA-N 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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, which comprises: a rescue implement; a frame formed with a storage location for accommodating a rescue tool; and a hydraulic system arranged on the frame, the hydraulic system comprising: the rod of the oil cylinder is connected with the rescue appliance in a driving mode, and the oil cylinder is configured to retract the rescue appliance to the storage position and take the rescue appliance out of 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, 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, the main reversing valve is arranged at the second station, and the 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 a pump having an input end connected to the oil tank through an oil passage and an output end connected to the main directional control valve through an oil passage, the pump being configured to pump hydraulic oil in the oil tank to the main directional control valve. The invention has the advantages of convenient operation, labor saving and improved rescue efficiency.
Description
Technical Field
The invention relates to the field of fire rescue, in particular to a rescue equipment vehicle.
Background
When the rescue personnel take and place rescue equipment, the equipment with higher placing position and some heavier equipment need to be taken and placed by an auxiliary mechanism, such as a pedal, a lifting mechanism and the like; most of traditional auxiliary mechanisms are manually operated, time and labor are wasted in manual operation when the traditional auxiliary mechanisms face some complex and heavier pedal mechanisms, lifting mechanisms and other auxiliary mechanisms, rescue efficiency is influenced, and some complex and heavier equipment is inconvenient to manually fold and unfold.
Disclosure of Invention
Some embodiments of the invention provide a rescue equipment vehicle for relieving the problem of inconvenient taking of rescue equipment.
Some embodiments of the present invention provide a rescue equipment cart comprising:
a rescue implement;
a frame formed with a storage location accommodating the rescue tool; and
hydraulic system locates the frame, hydraulic system includes:
a ram having a ram rod drivingly connected to the rescue implement, the ram being configured to retract the rescue implement to the storage location and to remove the rescue implement from the storage location;
the hydraulic oil cylinder comprises an oil cylinder, a main reversing valve, a hydraulic oil cylinder and a hydraulic oil cylinder, wherein the oil cylinder is connected with the main reversing valve through an oil path, the main reversing valve comprises a first station and a second station, 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, the main reversing valve is arranged at the second station, and the hydraulic oil enters a rod cavity of the oil cylinder through the main reversing valve to drive a cylinder rod of the oil cylinder to retract;
an oil tank; and
and a pump having an input end connected to the oil tank through an oil passage and an output end connected to the main directional control valve through an oil passage, the pump being configured to pump hydraulic oil in the oil tank to the main directional control valve.
In some embodiments, the hydraulic system includes a balancing valve disposed in an oil path between the main directional control 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 directional control valve.
In some embodiments, the hydraulic system includes a first branch, an oil return path, and an overflow valve, where a first end of the first branch is connected to an oil path between the output end of the pump and the main directional control 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 disposed in the first branch.
In some embodiments, the hydraulic system includes a second branch, an oil return path, and a secondary directional control valve, a first end of the second branch is connected to an oil path between the output end of the pump and the primary directional control 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 directional control valve is disposed 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 oil return path.
In some embodiments, the main directional control valve is connected to the oil return passage.
In some embodiments, the main directional control valve further comprises a third position, the main directional control valve is in the third position, and an oil path between the output end of the pump and the oil cylinder is cut off.
In some embodiments, the rescue apparatus includes at least one of rescue equipment, a pedal to assist in accessing the rescue equipment, a case in which the rescue equipment is predisposed, and a generator.
In some embodiments, the rescue equipment vehicle comprises three cylinders, namely a first cylinder, a second cylinder and a third cylinder; the three 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 path between the output end of the pump and the first oil cylinder, the second main reversing valve is arranged on an oil path between the output end of the pump and the second oil cylinder, the third main reversing valve is arranged on an oil path 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 body, and the third oil cylinder is in driving connection with the generator.
Based on the technical scheme, the invention at least has the following beneficial effects:
in some embodiments, power is provided by a pump to drive hydraulic oil in an oil tank to enter a main reversing valve, the hydraulic oil enters a rod cavity or a rodless cavity of the oil cylinder through switching of stations of the main reversing valve to drive the cylinder rod of the oil cylinder to stretch, the cylinder rod of the oil cylinder is connected with a rescue appliance in a driving mode, the rescue appliance is taken out or retracted through stretching of the cylinder rod of the oil cylinder, operation is convenient, physical strength and time of rescue workers are greatly saved, and rescue efficiency is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
fig. 1 is a schematic view of a rescue equipment cart provided according to some embodiments of the present invention.
Fig. 2 is a schematic diagram illustrating a hydraulic control principle of a rescue equipment vehicle according to some embodiments of the invention.
The reference numbers in the drawings illustrate the following:
1-a hydraulic system;
11-oil cylinder; 111-a first cylinder; 112-a second cylinder; 113-a third cylinder;
12-a main reversing valve; 121-a first main directional control valve; 122-a second main directional control valve; 123-a third main directional control valve;
13-oil tank;
14-a pump;
15-a balancing valve; 151-first balancing valve; 152-a second counter balance valve; 153-third counter balance valve;
16-a throttle valve; 161-a first throttle valve; 162-a second throttle valve; 163-a third throttle valve;
17-an overflow valve;
18-time reversing valves;
19-a filter;
2-a frame;
3-a rescue tool; 31-a pedal; 32-box body.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be taken as limiting the scope of the present invention.
As shown in fig. 1, a rescue equipment vehicle provided for some embodiments includes: rescue apparatus 3, frame 2 and hydraulic system 1.
The frame 2 is formed with a storage place for accommodating the rescue tool 3. The hydraulic system 1 is arranged on the frame 2.
As shown in fig. 2, the hydraulic system 1 includes a cylinder 11, a main directional control valve 12, an oil tank 13, and a pump 14.
The 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 the storage position, the cylinder 11 also being configured to remove the rescue tool 3 from the storage position. That is, the rescue tool 3 is taken in and out by extending and contracting the rod of the oil cylinder 11.
The main directional control valve 12 is connected with the oil cylinder 11 through an oil path, the main directional control valve 12 comprises a first station and a second station, the main directional control valve 12 is arranged at the first station, hydraulic oil enters a rodless cavity of the oil cylinder 11 through the main directional control valve 12 to drive a cylinder rod of the oil cylinder 11 to extend out; the main directional control valve 12 is in the second working position, and hydraulic oil enters the rod cavity of the oil cylinder 11 through the main directional control valve 12 to drive the cylinder rod of the oil cylinder 11 to retract. The rescue device 3 is correspondingly taken out or recovered through the extension or retraction of the cylinder rod of the oil cylinder 11.
In some embodiments, the main directional control valve 12 further comprises a third position, the main directional control valve 12 is in the third position, and the oil path between the output end of the pump 14 and the oil cylinder 11 is cut off.
Optionally, the main directional control valve 12 is a solenoid directional control valve.
An input end of the pump 14 is connected to the tank 13 through an oil passage, an output end of the pump 14 is connected to the main directional control valve 12 through an oil passage, and the pump 14 is configured to pump hydraulic oil in the tank 13 to the main directional control valve 12.
Optionally, the pump 14 comprises a dc motor pump.
In some embodiments, hydraulic oil in the oil tank 13 is driven to enter the main directional control valve 12 by power supplied by the pump 14, and the hydraulic oil enters the rod cavity or the rodless cavity of the oil cylinder 11 by switching the work stations of the main directional control valve 12 to drive the expansion 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 by the expansion of the cylinder rod of the oil cylinder 11, that is, the rescue tool is taken out or taken back by a hydraulic system instead of a manual work, 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 implement 3 comprises at least one of rescue equipment, a step 31 to assist in the access of the rescue equipment, a box 32 pre-populated with rescue equipment, and a generator.
As shown in fig. 1, the pedal 31 is arranged on the frame 2, the hydraulic system 1 provides power to drive the pedal 31 to expand or contract, the pedal 31 is expanded to be used for rescue workers to get on or off the rescue equipment vehicle to get in or get out the rescue equipment, and the rescue equipment is convenient to be placed on the pedal 31 so as to take or take back the rescue equipment.
Rescue equipment is preset in the box body 32, the hydraulic system 1 is used for providing power to take the box body 32 out of the storage position, rescue workers can conveniently carry the box body 32 and the rescue equipment preset in the box body to a rescue site, and the hydraulic system 1 is also used for providing power to take the box body 32 and the rescue equipment preset in the box body back 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 take the generator back to 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 at the same time, or three of the pedal 31, the box 32 and the generator are selected to be taken out or retracted at the same time according to actual needs. Optionally, the pedal 31 comprises a third step pedal.
In some embodiments, the main directional control valve 12 includes a first station, a second station, and a third station, the main directional control valve 12 includes a first oil port, a second oil port, a third oil port, and a fourth oil port, the first oil port of the main directional control valve 12 is connected to the output end of the pump 14, the second oil port of the main directional control valve 12 is connected to the oil tank 13, the third oil port of the main directional control valve 12 is connected to the rod chamber of the oil cylinder 11, and the fourth oil port of the main directional control valve 12 is connected to the rodless chamber of the oil cylinder 11.
The main reversing valve 12 is arranged 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 arranged at the second station, a first oil port of the main reversing valve 12 is communicated with a third oil port, and a second oil port of the main reversing valve is communicated with a fourth oil port. The main reversing valve 12 is at the third station, the first oil port of the main reversing valve 12 is connected, and the second oil port is communicated with the third oil port and the fourth oil port.
Optionally, the main reversing valve 12 comprises a three-position, four-way solenoid valve.
In some embodiments, the hydraulic system 1 comprises a balancing valve 15, the balancing valve 15 being provided in the oil path between the main directional control valve 12 and the cylinder 11. The balance valve 15 is used for locking the rescue tool 3 at any position, and when the main reversing valve 12 is in the third position, 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 comprises a throttle 16, the throttle 16 being provided in the oil path between the output of the pump 14 and the main directional control valve 12. Throttle valve 16 is used to regulate the flow of hydraulic oil into cylinder 11 to control the speed of retraction of rescue apparatus 3.
In some embodiments, the hydraulic system 1 includes a first branch, an oil return path, and an overflow valve 17, a first end of the first branch is connected to the oil path between the output end of the pump 14 and the main directional control 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 disposed 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 directional control valve 18, a first end of the second branch is connected to the oil path between the output end of the pump 14 and the main directional control 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 directional control 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 arranged at the first station, a 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 arranged 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, secondary reversing valve 18 comprises a solenoid reversing valve. The secondary reversing valve 18 includes a solenoid Y7, solenoid Y7 is energized, and the secondary reversing valve 18 is in the first position.
Optionally, secondary reversing valve 18 comprises a two-position, two-way solenoid reversing valve.
The secondary reversing valve 18 includes a first station, a second station, a first oil port, a second oil 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, a check valve is arranged on an oil path between the first oil port and the second oil port of the secondary reversing valve 18, an inlet of the check valve is communicated with the second oil port of the secondary reversing valve 18, an outlet of the check valve is communicated with the first oil port of the secondary reversing valve 18, the secondary reversing valve 18 is arranged at the second station, and the first oil port of the secondary reversing valve 18 is communicated with the second oil port.
In the actual working process, the main directional control valve 12 and the secondary directional control valve 18 are used in a matching manner, when the main directional control valve 12 is used, the secondary directional control valve 18 is in the first working position, that is, the electromagnet Y7 in fig. 1 is electrified, hydraulic oil output by the output end of the pump 14 cannot flow to the oil tank 13 through the secondary directional control valve 18, and therefore hydraulic oil can be prevented from directly flowing back to the oil tank 13 through the secondary directional control valve 18 from the output end of the pump 14, and the rescue apparatus 3 cannot move.
In some embodiments, the hydraulic system 1 comprises a filter 19, the filter 19 being provided in the oil return line.
In some embodiments, the main directional control valve 12 is connected to the oil return path.
In some embodiments, as shown in fig. 2, three cylinders 11 are provided, namely, a first cylinder 111, a second cylinder 112, and a third cylinder 113. Three main directional control valves 12 are provided, which are a first main directional control valve 121, a second main directional control valve 122, and a third main directional control valve 123, respectively.
The first main directional control valve 121 is arranged in an oil path between the output end of the pump 14 and the first oil cylinder 111, the second main directional control valve 122 is arranged in an oil path between the output end of the pump 14 and the second oil cylinder 112, the third main directional control valve 123 is arranged in an oil path 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.
The first cylinder 111 is used for driving the pedal 31 to extend and retract. The second cylinder 112 is used for driving the tank 32 to ascend and descend. The third cylinder 113 is used for driving the generator to ascend and descend.
The first main directional control valve 121 includes a solenoid Y1 and a solenoid Y2, the solenoid Y1 is energized, the first main directional control valve 121 is in the first position, the solenoid Y2 is energized, and the first main directional control valve 121 is in the second position.
The second main directional control valve 122 includes a solenoid Y3 and a solenoid Y4, the solenoid Y3 being energized, the second main directional control valve 122 being in the first position, the solenoid Y4 being energized, the second main directional control valve 122 being in the second position.
The third main directional control valve 123 includes a solenoid Y5 and a solenoid Y6, the solenoid Y5 is energized, the third main directional control valve 123 is in the first position, the solenoid Y6 is energized, and the third main directional control valve 123 is in the second position.
In some embodiments, the hydraulic system 1 comprises three counter-balance valves 15, a first counter-balance valve 151, a second counter-balance valve 152, a third counter-balance valve 153. The first balance valve 151 is provided in an oil path between the first main directional control valve 121 and the first cylinder 111. The second balance valve 152 is provided in an oil path between the second main directional control valve 122 and the second cylinder 112. The third balance valve 153 is provided in an oil path between the third main directional control valve 123 and the third cylinder 113.
The first balance valve 151 includes a port a1 and a port a2, the port a1 being connected to the rod chamber of the first cylinder 111, and the port a2 being connected to the rodless chamber of the first cylinder 111.
The second counter balance valve 152 includes ports B1 and B2, the port B1 being connected to the rod chamber of the second cylinder 112, and the port B2 being connected to the rodless chamber of the second cylinder 112.
The third balanced valve 153 includes a port C1 and a port C2, the port C1 is connected to the rod chamber of the third cylinder 113, and the port C2 is connected to the rodless chamber 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. The first throttle valve 161 is provided in an oil path between the output end of the pump 14 and the first main directional control 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 control 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 control valve 123.
When pump 14 is turned on and rescue device 3 is not activated: the hydraulic oil returns to the oil tank 13 through the secondary reversing valve 18 and the filter 19 after going from the oil tank 13 to the pump 14, a closed loop is formed, the electromagnet Y7 of the secondary reversing valve 18 is not electrified, and the secondary reversing valve 18 is in the second working position, so that energy loss is reduced.
After the pump 14 is started, when the hydraulic pressure of the hydraulic system is greater than the set pressure due to the overlarge load: the 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, the electromagnet Y7 is powered at the moment, and the secondary reversing valve 18 is located at the first station. The circuit is mainly used for preventing the damage of the elements of the hydraulic system and the damage of the hydraulic system caused by the overhigh pressure when the load exceeds the working pressure of the system.
In some embodiments, the taking and placing processes of the pedal 31, the box 32 and the generator are substantially the same, and the pedal 31 is unfolded and folded as an example.
Deployment of the pedal 31: the 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 the rodless cavity of the first oil cylinder 111 through the A2 port of the first balance valve 151, pushes the cylinder rod of the first oil cylinder 111 to extend, the hydraulic oil in the rod cavity of the first oil cylinder 111 is forced to flow out, the hydraulic oil reaches the first main reversing valve 121 through the 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 unfolding of the pedal 31 is completed.
Retraction of the pedal 31: the 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 electrified, the first main reversing valve 121 is positioned at the second station, the hydraulic oil reaches the first balance valve 151 through the first main reversing valve 121, then enters the rod cavity of the first oil cylinder 111 through the A1 port of the first balance valve 151, pushes the rod of the first oil cylinder 111 to contract, the hydraulic oil in the rodless cavity of the first oil cylinder 111 is forced to flow out, the hydraulic oil passes through the A2 port of the first balance valve 151, reaches the first main reversing valve 121, 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 contraction of the pedal 31 is completed.
The pedal 31, the box body 32 and the engine are taken out simultaneously, and when the cylinder rods of the three oil cylinders extend out 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 chamber of the first cylinder 111 through the first throttle valve 161, the first position of the first main directional control valve 121, the port a2 of the first balance valve 151, and the hydraulic oil in the rod chamber of the first cylinder 111 returns to the oil tank 13 through the port a1 of the first balance valve 151, the first position of the first main directional control valve 12, and the filter 19.
The second path is through the second throttle valve 162, the first position of the second main directional control valve 122, the port B2 of the second balance valve 152 to the rodless chamber of the second cylinder 112, and the hydraulic oil in the rod chamber of the second cylinder 112 is returned to the oil tank 13 through the port B1 of the second balance valve 152, the first position of the second main directional control valve 122, and the filter 19.
The third path of the hydraulic oil reaches the rodless cavity of the third oil cylinder 113 through the third throttle valve 163, the first station of the third main directional control valve 123 and the port C2 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 port C1 of the third balance valve 153, the first station of the third main directional control valve 123 and the filter 19.
The three paths of hydraulic oil are gathered together and return 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 electrified, meanwhile, the electromagnet Y7 is electrified, the secondary reversing valve 18 is located at the first station, and the rescue apparatus 3 is used at the same time.
In some embodiments, the rescue appliance 3 is driven by the hydraulic system 1, so that the rescue appliance can be taken and used conveniently and quickly; and can realize taking and withdrawing of each rescue equipment simultaneously, 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 to define the components, and are used only for the convenience of distinguishing the components, and if not otherwise stated, the terms have no special meaning, and thus, should not be construed as limiting the scope of the present invention.
Furthermore, the technical features of one embodiment may be combined with one or more other embodiments advantageously without explicit negatives.
Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present invention and not to limit the same; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.
Claims (10)
1. A rescue equipment cart, comprising:
a rescue tool (3);
a frame (2) in which a storage space for accommodating the rescue tool (3) is formed; and
hydraulic system (1), locate frame (2), hydraulic system (1) includes:
a cylinder (11), the rod of which cylinder (11) is drivingly connected to the rescue tool (3), the cylinder (11) being configured to retract the rescue tool (3) to the storage position and to remove the rescue tool (3) from the storage position;
the hydraulic oil control system comprises a main reversing valve (12) connected with an oil cylinder (11) through an oil way, wherein the main reversing valve (12) comprises a first station and a second station, the main reversing valve (12) is arranged at the first station, hydraulic oil enters a rodless cavity of the oil cylinder (11) through the main reversing valve (12) to drive a cylinder rod of the oil cylinder (11) to extend out, the main reversing valve (12) is arranged at the second station, and the hydraulic oil enters a rod cavity of the oil cylinder (11) through the main reversing valve (12) to drive a 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 control valve (12) through an oil passage, the pump (14) being configured to pump hydraulic oil in the oil tank (13) to the main directional control valve (12).
2. Rescue equipment vehicle as claimed in claim 1, characterized in that the hydraulic system (1) comprises a balancing valve (15), which balancing valve (15) is arranged in the oil path between the main directional control valve (12) and the 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 provided in the oil path between the output of the pump (14) and the main directional control valve (12).
4. The rescue equipment vehicle of claim 1, wherein the hydraulic system (1) comprises a first branch, an oil return path and an overflow valve (17), a first end of the first 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 first branch is connected with the oil return path, the oil return path is connected with the oil tank (13), and the overflow valve (17) is arranged on the first branch.
5. The rescue equipment vehicle of claim 1, wherein the hydraulic system (1) comprises a second branch, an oil return path and a secondary reversing valve (18), 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 and a second station, the secondary reversing valve (18) is arranged at the first station, the second branch is closed, the secondary reversing valve (18) is arranged at the second station, and the second branch is communicated.
6. Rescue equipment vehicle as claimed in claim 4 or 5, characterized in that the hydraulic system (1) comprises a filter (19), which filter (19) is provided in the oil return line.
7. Rescue equipment vehicle as claimed in claim 4 or 5, characterized in that the main directional control valve (12) is connected to the oil return line.
8. Rescue equipment vehicle as claimed in claim 1, characterized in that the main directional control valve (12) also comprises a third station, in which the main directional control valve (12) is in the third station and the oil path between the output of the pump (14) and the cylinder (11) is closed.
9. Rescue vehicle as claimed in claim 1, characterized in that the rescue apparatus (3) comprises at least one of a rescue apparatus, a step (31) assisting in the taking and placing of the rescue apparatus, a box (32) in which the rescue apparatus is predisposed and a generator.
10. Rescue equipment vehicle as claimed in claim 9, characterized by comprising three of said cylinders (11), a first cylinder (111), a second cylinder (112) and a third cylinder (113); and three of said main directional control valves (12), respectively a first main directional control valve (121), a second main directional control valve (122) and a third main directional control valve (123); the first main directional control valve (121) is arranged on an oil path between the output end of the pump (14) and the first oil cylinder (111), the second main directional control valve (122) is arranged on an oil path between the output end of the pump (14) and the second oil cylinder (112), the third main directional control valve (123) is arranged on an oil path 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 body (32), and the third oil cylinder (113) is in driving connection with the generator.
Priority Applications (1)
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| CN202010164213.3A CN111237270A (en) | 2020-03-11 | 2020-03-11 | Rescue equipment vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010164213.3A CN111237270A (en) | 2020-03-11 | 2020-03-11 | Rescue equipment vehicle |
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| CN111237270A true CN111237270A (en) | 2020-06-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 | Weight reduction control valve, hydraulic control system using weight reduction control valve and mine sweeping vehicle |
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Effective date of registration: 20220725 Address after: 221004 26 Tuo Lan Shan Road, Xuzhou economic and Technological Development Zone, Jiangsu Applicant after: Jiangsu Xugong Construction Machinery Research Institute Co.,Ltd. Address before: 221004 26 Tuo Lan Shan Road, Xuzhou economic and Technological Development Zone, Jiangsu Applicant before: XCMG CONSTRUCTION MACHINERY Co.,Ltd. |