CN111017822A - Hydraulic system of three-way piling car - Google Patents
Hydraulic system of three-way piling car Download PDFInfo
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- CN111017822A CN111017822A CN201911187464.7A CN201911187464A CN111017822A CN 111017822 A CN111017822 A CN 111017822A CN 201911187464 A CN201911187464 A CN 201911187464A CN 111017822 A CN111017822 A CN 111017822A
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- reversing valve
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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
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/20—Means for actuating or controlling masts, platforms, or forks
- B66F9/22—Hydraulic devices or systems
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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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- 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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- 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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
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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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Transportation (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Analytical Chemistry (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
The invention discloses a hydraulic system of a three-way stacker, which comprises an oil tank, wherein a gear pump guides hydraulic oil into an oil inlet P of a multi-way valve through an oil outlet end, the multi-way valve comprises a lifting reversing valve, a side-shifting reversing valve and a rotary reversing valve, an oil port B1 of the lifting reversing valve is connected with a lifting oil cylinder, oil ports A2 and B2 of the side-shifting reversing valve are respectively connected with oil ports V2 and V1 of a side-shifting hydraulic motor valve group, oil ports A3 and B3 of the rotary reversing valve are respectively connected with oil ports V2 and V1 of the rotary hydraulic motor valve group, and middle positions of the side-shifting reversing valve and the rotary reversing valve can be Y-shaped. The invention provides a hydraulic system of a three-way stacker, which can realize the functions of lifting, lateral moving and rotating of the three-way stacker, and meanwhile, the hydraulic motor valve bank has a structure of bidirectional overflow and locking of a free fork, so that the accuracy, stability and safety of stacking of a forklift are effectively improved, and the hydraulic system is very worthy of popularization.
Description
Technical Field
The invention relates to the technical field of hydraulic systems, in particular to a hydraulic system of a three-way stacker.
Background
Modern logistics industry has diversified development, along with the increase of soil, cost of labor, intensive goods shelves are more and more, and the three-dimensional stacker that is applied to the narrow roadway that matches thereupon takes place at the same time, but current three-dimensional stacker can only realize the lift of fork truck portal, and the function is single, can not satisfy the user demand.
In the prior art, a hydraulic drive system for a forklift with application number "201810991786.6" includes a brake device, a lift cylinder, a tilt cylinder, a steering cylinder, and a gear pump and a hydraulic oil tank for supplying high-pressure oil to the brake device, the lift cylinder, the tilt cylinder, and the steering cylinder; the driving system further comprises an oil inlet valve plate, a braking oil path, a steering oil path, a lifting oil path and an oil return pipeline. Wherein, when actuating system during operation, the hydraulic oil of gear pump divides two the tunnel through the priority valve in the oil feed valve block: one path controls the steering and braking of the forklift body through a braking oil path and a steering oil path; the other path of the hydraulic driving system is connected with the lifting oil path and the inclined oil path to control the lifting action and the inclined action of the portal frame, the production and manufacturing cost of the hydraulic driving system for the forklift is reduced, the operation is more portable and comfortable, and the production efficiency is improved.
However, the method still has the obvious defects in the using process: 1. the device does not have the function of bidirectional overflow, can not buffer the impact generated when the fork head laterally moves or rotates during braking, and is easy to damage precision equipment or shake, collide and damage fragile goods; 2. the device can not realize the locking function through a related structure, so that the fork head in a free state is easy to laterally move and rotate, and the accuracy, the stability and the safety of the stacking of the forklift are influenced.
Disclosure of Invention
The invention aims to provide a hydraulic system of a three-way stacker, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a hydraulic system of a three-way stacker comprises an oil tank, wherein hydraulic oil in the oil tank enters a gear pump after passing through an oil suction filter, the gear pump is driven by a motor, the gear pump guides the hydraulic oil into an oil inlet P of a multi-way valve through an oil outlet end, the multi-way valve comprises a lifting reversing valve, a side shifting reversing valve and a rotary reversing valve, an oil port B1 of the lifting reversing valve is connected with a lifting oil cylinder, oil ports A2 and B2 of the side shifting reversing valve are respectively connected with oil ports V2 and V1 of a side shifting hydraulic motor valve group, oil ports A3 and B3 of the rotary reversing valve are respectively connected with oil ports V2 and V1 of the rotary hydraulic motor valve group, and the middle positions of the side shifting reversing valve and the rotary reversing valve can be Y-shaped;
the hydraulic motor valve bank and the rotary hydraulic motor valve bank laterally move respectively comprise hydraulic motors and valve block assemblies, each valve block assembly comprises a pressure reducing valve I and a pressure reducing valve II which are connected with an oil port, the pressure reducing valve I is connected with the hydraulic motor in series through a left oil path I to form a loop, the pressure reducing valve II is connected with the hydraulic motor in series through a right oil path I to form a loop, the pressure reducing valve I is connected with a one-way valve I in parallel, the pressure reducing valve II is connected with the one-way valve II in parallel, and the hydraulic motors are respectively connected with an overflow valve I and an overflow valve II in;
the oil outlets of the pressure reducing valve I and the pressure reducing valve II are connected with the multi-way valve, the oil inlets of the check valve I and the check valve II are connected with the multi-way valve, and the overflow valve I and the overflow valve II are reversely connected in parallel.
Preferably, the middle position function of the lifting reversing valve is O-shaped, a middle oil way II is communicated and arranged in the lifting reversing valve, the side shifting reversing valve and the rotary reversing valve, the two ends of the middle oil way II are respectively communicated with a left oil way II and a right oil way II, the right oil way II is communicated with an oil tank, oil inlets of the lifting reversing valve, the side shifting reversing valve and the rotary reversing valve are all provided with a one-way valve III, and an overflow valve III is arranged between the right oil way II and the middle oil way II.
Preferably, a throttle valve I is arranged on the middle oil way II and is arranged in the lifting reversing valve.
Preferably, the multiple-way valve is communicated with the stop valve, the stop valve is arranged at the oil inlet end of the lifting oil cylinder, a speed-limiting valve is arranged between the multiple-way valve and the stop valve, and the speed-limiting valve comprises a throttle valve II and a one-way valve which are connected in parallel.
Compared with the prior art, the invention has the beneficial effects that:
1. the hydraulic system not only realizes the lifting function of the forklift gantry, but also realizes the lateral movement and rotation functions of the fork head, the hydraulic motor valve group plays a role in buffering and braking the lateral movement and rotation actions of the fork head, and the built-in bidirectional overflow valve can buffer the impact generated when the fork head laterally moves or rotates during braking;
2. the hydraulic system can lock the fork head in a free state by preventing the hydraulic motor from rotating, so that the fork head is prevented from laterally moving and rotating, and the accuracy, stability and safety of the forklift during stacking are obviously improved;
3. the hydraulic system has the advantages of simple structure and complete functions, and can meet various use requirements.
The invention provides a hydraulic system of a three-way stacker, which can realize the functions of lifting, lateral moving and rotating of the three-way stacker, and meanwhile, the hydraulic motor valve bank has a structure of bidirectional overflow and locking of a free fork, so that the accuracy, stability and safety of stacking of a forklift are effectively improved, and the hydraulic system is very worthy of popularization.
Drawings
FIG. 1 is a schematic diagram of the hydraulic system of the present invention;
fig. 2 is a schematic diagram of a hydraulic motor valve block of the present invention.
In the figure: 1 oil tank, 2 oil suction filter, 3 motor, 4 gear pump, 5 multiway valve, 5-1 overflow valve III, 5-2 one-way valve III, 5-3 lifting reversing valve, 5-4-1 side shifting reversing valve, 5-4-2 rotary reversing valve, 5-5 left oil way II, 5-6 middle oil way II, 5-7 right oil way II, 5-8 throttle valve I, 601 side shifting hydraulic motor valve group, 602 rotary hydraulic motor valve group, 6-1 hydraulic motor, 6-2 valve block component, 6-2-1 overflow valve I, 6-2-2 overflow valve II, 6-2-3 one-way valve I, 6-2-4 one-way valve II, 6-2-5 pressure reducing valve II, 6-2-6 pressure reducing valve I, 6-2-7 left oil way I, 6-2-8 right side oil circuit I, 7 speed limiting valve, 7-1 one-way valve, 7-2 throttle valve II, 8 cut-off valve and 9 lifting oil cylinder.
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 of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides a technical solution:
a hydraulic system of a three-way stacker comprises an oil tank 1, hydraulic oil is stored in the oil tank 1, the hydraulic oil in the oil tank 1 enters a gear pump 4 after passing through an oil suction filter 2, the oil suction filter 2 can filter solid particles and colloidal substances in the hydraulic oil and effectively control the pollution degree of the hydraulic oil, the gear pump 4 is driven by a motor 3, the gear pump 4 guides the hydraulic oil into an oil inlet P of a multi-way valve 5 through an oil outlet end, the multi-way valve 5 comprises a lifting reversing valve 5-3, a side shifting reversing valve 5-4-1 and a rotary reversing valve 5-4-2, an oil port B1 of the lifting reversing valve 5-3 is connected with a lifting oil cylinder 9, oil ports A2 and B2 of the side shifting reversing valve 5-4-1 are respectively connected with oil ports V2 and V1 of a side shifting hydraulic motor valve bank 601, oil ports A3 and B3 of the rotary reversing valve are respectively connected with an oil port V2 and, V1, and the middle position functions of the side shift change-over valve 5-4-1 and the rotary change-over valve 5-4-2 are Y-shaped.
The lateral shifting hydraulic motor valve bank 601 and the rotating hydraulic motor valve bank 602 both comprise a hydraulic motor 6-1 and a valve block assembly 6-2, the valve block assembly 6-2 comprises a pressure reducing valve I6-2-6 and a pressure reducing valve II 6-2-5 which are connected with oil ports, the pressure reducing valve I6-2-6 is connected with the hydraulic motor 6-1 in series through a left oil way I6-2-7 to form a loop, the pressure reducing valve II 6-2-5 is connected with the hydraulic motor 6-1 in series through a right oil way I6-2-8 to form a loop, the pressure reducing valve I6-2-6 is connected with a one-way valve I6-2-3 in parallel, the pressure reducing valve II 6-2-5 is connected with the one-way valve II 6-2-4 in parallel, and the hydraulic motor 6-1 is respectively connected with an overflow valve I6-, The overflow valve II 6-2-2 is connected in parallel, and the overflow valve I6-2-1 and the overflow valve II 6-2-2 have the function of overflowing to buffer impact force.
The oil outlets of the pressure reducing valve I6-2-6 and the pressure reducing valve II 6-2-5 are connected with the multi-way valve 5, the oil inlets of the one-way valve I6-2-3 and the one-way valve II 6-2-4 are connected with the multi-way valve 5, and the overflow valve I6-2-1 and the overflow valve II 6-2-2 are reversely connected in parallel, so that bidirectional overflow is formed.
Preferably, the middle position function of the lifting reversing valve 5-3 is O-shaped, a middle oil way II 5-6 is communicated and arranged in the lifting reversing valve 5-3, the side shifting reversing valve 5-4-1 and the rotary reversing valve 5-4-2, two ends of the middle oil way II 5-6 are respectively communicated with a left oil way II 5-5 and a right oil way II 5-7, the right oil way II 5-7 is communicated with the oil tank 1, oil inlets of the lifting reversing valve 5-3, the side shifting reversing valve 5-4-1 and the rotary reversing valve 5-4-2 are all provided with a one-way valve III 5-2, and an overflow valve III 5-1 is arranged between the right oil way II 5-7 and the middle oil way II 5-6.
Preferably, the intermediate oil way II 5-6 is provided with a throttle valve I5-8, the throttle valve I5-8 is arranged in the lifting reversing valve 5-3, and the throttle valve I5-8 has a protection function.
Preferably, the multi-way valve 5 is communicated with a stop valve 8, the stop valve 8 is arranged at the oil inlet end of the lifting oil cylinder 9, a speed-limiting valve 7 is arranged between the multi-way valve 5 and the stop valve 8, and the speed-limiting valve 7 comprises a throttle valve II 7-2 and a check valve 7-1 which are connected in parallel.
Example 1: bidirectional overflow: the overflow valves I6-2-1 and the overflow valves II 6-2-2 in the lateral shifting hydraulic motor valve bank 601 and the rotating hydraulic motor valve bank 602 are connected in parallel and have opposite directions to form a 'two-way overflow valve', and when the fork head is overloaded or is limited and braked, the hydraulic motor 6-1 stops rotating under the action of external force, so that the pressure of a hydraulic system is increased. When the pressure reaches a preset value, one overflow valve in the two-way overflow valve, namely the overflow valve I6-2-1 or the overflow valve II 6-2-2, is opened to form a hydraulic loop, hydraulic oil does not pass through the hydraulic motor 6-1 but directly passes through the pressure reducing valve II 6-2-5 or the pressure reducing valve I6-2-6, flows out of the side shifting hydraulic motor valve group 601 or the rotating hydraulic motor valve group 602, flows back to the multi-way valve 5, flows back to the oil tank 1 through the side shifting reversing valve 5-4-1 or the rotating reversing valve 5-4-2 and the right side oil way II 5-7, impact force generated during braking by side shifting or rotating of the fork head is effectively buffered, and the stability of the fork head is improved.
Example 2: locking the fork head: the oil inlets and the oil outlets of the lateral shifting hydraulic motor valve bank 601 and the rotating hydraulic motor valve bank 602 are respectively provided with a pressure reducing valve I6-2-6 and a pressure reducing valve II 6-2-5, the oil outlets of the pressure reducing valve I6-2-6 and the pressure reducing valve II 6-2-5 are connected with the multi-way valve 5, the oil inlets and the oil outlets of the pressure reducing valve I6-2-6 and the pressure reducing valve II 6-2-5 are opposite in direction, the pressure reducing valve I6-2-6 is connected with a one-way valve I6-2-3 in parallel, the oil inlets and the oil outlets of the pressure reducing valve I6-2-6 are opposite in direction, the pressure reducing valve II 6-2-5 is connected with a one-way valve II 6-2-4 in parallel, the oil inlets and the oil outlets of the pressure reducing valve I6-2-6 and the pressure reducing valve, the middle position function is Y-shaped, at the moment, oil inlet and outlet ports V1 and V2 of the side-shifting hydraulic motor valve bank 601 and the rotating hydraulic motor valve bank 602 are directly communicated with the oil tank 1, the pressure at the ends of the oil inlet and outlet ports V1 and V2 are the same, no pressure difference exists, pressure reducing valves I6-2-6, pressure reducing valves II 6-2-5, one-way valves I6-2-3 and one-way valves II 6-2-4 in the side-shifting hydraulic motor valve bank 601 and the rotating hydraulic motor valve bank 602 are in a closed state, and due to the fact that no external force exists, oil ways in the side-shifting hydraulic motor valve bank 601 and the rotating hydraulic motor valve bank 602 are closed, the hydraulic motor 6-1 is prevented from rotating, and further a locking function is achieved for.
Example 3: the gantry is lifted: at the moment, the valve core of the lifting reversing valve 5-3 is positioned at the right position, hydraulic oil flows to a port B1 of the multi-way valve 5 through a left oil way II 5-5, a one-way valve III 5-2 and the lifting reversing valve 5-3, is guided into a left oil way of the speed limiting valve 7, flows out of the speed limiting valve 7 through a one-way valve 7-1 and then enters the lifting oil cylinder 9 through a cut-off valve 8 to finish lifting action.
Example 4: descending the door frame: at the moment, the valve core of the lifting reversing valve 5-3 is in the left position, the lifting oil cylinder 9 descends under the action of gravity, hydraulic oil in the lifting oil cylinder 9 returns to the speed-limiting valve 7 through the stop valve 8, flows back to the multi-way valve 5 through the throttle valve II 7-2, and then flows back to the oil tank 1 through the lifting reversing valve 5-3 and the right oil way II 5-7.
Example 5: shifting the fork head to the left side: at the moment, a valve core of the side shifting reversing valve 5-4-1 is in a left position, hydraulic oil flows to an A2 port of the multi-way valve 5 through a left oil path II 5-5, a one-way valve III 5-2 and a side shifting reversing valve 5-4-1, is led into a V2 port of the side shifting hydraulic motor valve group 601, then flows to a V1 port of the side shifting hydraulic motor valve group 601 through a right oil path I6-2-8 and a one-way valve II 6-2-4 to drive the hydraulic motor 6-1 to rotate in the forward direction, then flows to a B2 port of the multi-way valve 5 through a left oil path I6-2-7 and a pressure reducing valve I6-2-6, and finally flows back to the oil tank 1 through a right oil path II 5-7 of the side shifting reversing valve 5-4-1 and the multi-way valve 5.
Example 6: the fork head rotates left: at the moment, a valve core of the rotary reversing valve 5-4-2 is positioned at a left position, hydraulic oil flows to an A3 port of the multi-way valve 5 through a left oil path II 5-5, a one-way valve III 5-2 and the rotary reversing valve 5-4-2, is guided into a V2 port of the rotary hydraulic motor valve group 602, then drives the hydraulic motor 6-1 to rotate in the forward direction through a right oil path I6-2-8 and the one-way valve II 6-2-4, then flows to a V1 port of the rotary hydraulic motor valve group 602 through a left oil path I6-2-7 and a pressure reducing valve I6-2-6, then flows back to a B3 port of the multi-way valve 5, and finally flows back to the oil tank 1 through the rotary reversing valve 5-4-2 and a right oil path II 5-7 of the multi-way.
Example 7: the fork head moves to the right side: at the moment, a valve core of the side shifting reversing valve 5-4-1 is in a right position, hydraulic oil flows to a port B2 of the multi-way valve 5 through a left oil path II 5-5, a one-way valve III 5-2 and the side shifting reversing valve 5-4-1, is led into a port V1 of the side shifting hydraulic motor valve group 601, then flows to a port V2 of the side shifting hydraulic motor valve group 601 through a left oil path 6-2-7I and a one-way valve I6-2-3 to drive the hydraulic motor 6-1 to rotate in the reverse direction, then flows back to a port A2 of the multi-way valve 5 through a right oil path I6-2-8 and a pressure reducing valve II 6-2-5, and finally flows back to the oil tank 1 through a right oil path II 5-7 of the side shifting reversing valve 5-4-1 and the multi-way valve.
Example 8: right rotation of the fork head: at the moment, a valve core of the rotary reversing valve 5-4-2 is positioned at the right position, hydraulic oil flows to a port B3 of the multi-way valve 5 through a left oil path II 5-5, a one-way valve III 5-2 and the rotary reversing valve 5-4-2, is led into a port V1 of the rotary hydraulic motor valve group 602, then drives the hydraulic motor 6-1 to rotate reversely through a left oil path 6-2-7I and the one-way valve I6-2-3, then flows to a port V2 of the rotary hydraulic motor valve group 602 through a right oil path I6-2-8 and a pressure reducing valve II 6-2-5, then flows back to a port A2 of the multi-way valve 5, and finally flows back to the oil tank 1 through the rotary reversing valve 5-4-2 and a right oil path II 5-7 of the multi-way valve 5.
In the process of the fork rotation or the side shift of the above embodiments 5 to 8, the hydraulic oil drives the hydraulic motor 6-1 to rotate, so that the pressure loss is caused, the oil pressure at the oil inlet end of the side shift hydraulic motor valve bank 601 or the rotary hydraulic motor valve bank 602 is greater than the oil pressure at the oil inlet end of the pressure reducing valve i 6-2-6 or the pressure reducing valve ii 6-2-5, a pressure difference is formed, and further, the valve element of the pressure reducing valve i 6-2-6 or the pressure reducing valve ii 6-2-5 is pushed to move, so that the valve element is opened to form a loop.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a hydraulic system of three-way piling car, includes oil tank (1), hydraulic oil in oil tank (1) enters gear pump (4) after oil absorption filter (2), gear pump (4) are driven by motor (3), gear pump (4) are through the oil inlet P of oil outlet end with the leading-in multiple unit valve (5) of hydraulic oil, its characterized in that: the multi-way valve (5) comprises a lifting reversing valve (5-3), a side shifting reversing valve (5-4-1) and a rotary reversing valve (5-4-2), an oil port B1 of the lifting reversing valve (5-3) is connected with a lifting oil cylinder (9), oil ports A2 and B2 of the side shifting reversing valve (5-4-1) are respectively connected with oil ports V2 and V1 of a side shifting hydraulic motor valve group (601), oil ports A3 and B3 of the rotary reversing valve (5-4-2) are respectively connected with oil ports V2 and V1 of a rotary hydraulic motor valve group (602), and the middle positions of the side shifting reversing valve (5-4-1) and the rotary reversing valve (5-4-2) can be Y-shaped;
the lateral shifting hydraulic motor valve bank (601) and the rotating hydraulic motor valve bank (602) both comprise a hydraulic motor (6-1) and a valve block assembly (6-2), the valve block assembly (6-2) comprises a pressure reducing valve I (6-2-6) and a pressure reducing valve II (6-2-5) which are connected with oil ports, the pressure reducing valve I (6-2-6) is connected with the hydraulic motor (6-1) in series to form a loop through a left oil way I (6-2-7), the pressure reducing valve II (6-2-5) is connected with the hydraulic motor (6-1) in series to form a loop through a right oil way I (6-2-8), the pressure reducing valve I (6-2-6) is connected with a one-way valve I (6-2-3) in parallel, the pressure reducing valve II (6-2-5) is connected with a one-way valve II (6-2-4) in parallel, the hydraulic motor (6-1) is respectively connected with the overflow valve I (6-2-1) and the overflow valve II (6-2-2) in parallel;
oil outlets of the pressure reducing valve I (6-2-6) and the pressure reducing valve II (6-2-5) are connected with the multi-way valve (5), oil inlets of the check valve I (6-2-3) and the check valve II (6-2-4) are connected with the multi-way valve (5), and the overflow valve I (6-2-1) and the overflow valve II (6-2-2) are reversely connected in parallel.
2. The hydraulic system of a three-way stacker truck of claim 1, wherein: the middle position of the lifting reversing valve (5-3) can be in an O shape, a middle oil way II (5-6) is communicated and arranged in the lifting reversing valve (5-3), the side shifting reversing valve (5-4-1) and the rotary reversing valve (5-4-2), two ends of the middle oil way II (5-6) are respectively communicated with a left oil way II (5-5) and a right oil way II (5-7), the right oil way II (5-7) is communicated with the oil tank (1), oil inlets of the lifting reversing valve (5-3), the side shifting reversing valve (5-4-1) and the rotary reversing valve (5-4-2) are all provided with a one-way valve III (5-2), and an overflow valve III (5-1) is arranged between the right oil way II (5-7) and the middle oil way II (5-6).
3. The hydraulic system of a three-way stacker truck of claim 2, wherein: and a throttle valve I (5-8) is arranged on the intermediate oil way II (5-6), and the throttle valve I (5-8) is arranged in the lifting reversing valve (5-3).
4. The hydraulic system of a three-way stacker truck of claim 3, wherein: the multi-way valve (5) is communicated with the stop valve (8), the stop valve (8) is arranged at the oil inlet end of the lifting oil cylinder (9), a speed-limiting valve (7) is arranged between the multi-way valve (5) and the stop valve (8), and the speed-limiting valve (7) comprises a throttle valve II (7-2) and a check valve (7-1) which are connected in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911187464.7A CN111017822A (en) | 2019-11-28 | 2019-11-28 | Hydraulic system of three-way piling car |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911187464.7A CN111017822A (en) | 2019-11-28 | 2019-11-28 | Hydraulic system of three-way piling car |
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| CN111017822A true CN111017822A (en) | 2020-04-17 |
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| CN201911187464.7A Pending CN111017822A (en) | 2019-11-28 | 2019-11-28 | Hydraulic system of three-way piling car |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113404734A (en) * | 2021-07-28 | 2021-09-17 | 柳州柳工挖掘机有限公司 | Pile hammer rotary hydraulic system and pile hammer |
| CN114183416A (en) * | 2021-12-16 | 2022-03-15 | 杭叉集团股份有限公司 | Three-way stacking type forklift hydraulic system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US3875747A (en) * | 1972-04-14 | 1975-04-08 | Lancer Boss Ltd | Hydraulic control circuits |
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| US3875747A (en) * | 1972-04-14 | 1975-04-08 | Lancer Boss Ltd | Hydraulic control circuits |
| CN102076598A (en) * | 2008-04-30 | 2011-05-25 | 卡斯卡特公司 | Hydraulic valve circuit with damage-control override |
| CN202063682U (en) * | 2010-12-01 | 2011-12-07 | 泸州长起特种起重设备有限公司 | Conversion control loop of boom head oil way for telescopic boom forklift truck |
| CN103663296A (en) * | 2013-11-26 | 2014-03-26 | 西安交通大学 | Cylindrical-linear-motor-driven electro-hydraulic proportional directional screw-in multi-way cartridge valve for forklifts |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113404734A (en) * | 2021-07-28 | 2021-09-17 | 柳州柳工挖掘机有限公司 | Pile hammer rotary hydraulic system and pile hammer |
| CN113404734B (en) * | 2021-07-28 | 2022-08-05 | 柳州柳工挖掘机有限公司 | Pile hammer |
| CN114183416A (en) * | 2021-12-16 | 2022-03-15 | 杭叉集团股份有限公司 | Three-way stacking type forklift hydraulic system |
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Application publication date: 20200417 |