CN111425474A - Lifting multi-way valve - Google Patents

Lifting multi-way valve Download PDF

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Publication number
CN111425474A
CN111425474A CN202010364199.1A CN202010364199A CN111425474A CN 111425474 A CN111425474 A CN 111425474A CN 202010364199 A CN202010364199 A CN 202010364199A CN 111425474 A CN111425474 A CN 111425474A
Authority
CN
China
Prior art keywords
lifting
way
valve
oil
reversing valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010364199.1A
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Chinese (zh)
Inventor
郑玉涛
黄建安
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hebei Huachun Hydraulic Automobile Parts Co ltd
Original Assignee
Hebei Huachun Hydraulic Automobile Parts Co ltd
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Publication date
Application filed by Hebei Huachun Hydraulic Automobile Parts Co ltd filed Critical Hebei Huachun Hydraulic Automobile Parts Co ltd
Priority to CN202010364199.1A priority Critical patent/CN111425474A/en
Publication of CN111425474A publication Critical patent/CN111425474A/en
Pending legal-status Critical Current

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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
    • F15B13/021—Valves for interconnecting the fluid chambers of an actuator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P7/00—Securing or covering of load on vehicles
    • B60P7/02—Covering of load
    • 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
    • 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
    • F15B13/023—Excess flow valves, e.g. for locking cylinders in case of hose burst
    • 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
    • F15B13/024—Pressure relief valves
    • 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
    • F15B13/027—Check valves
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/04—Construction of housing; Use of materials therefor of sliding valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
    • F16K31/1221—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston one side of the piston being spring-loaded

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Transportation (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

The invention belongs to a valve, in particular to a lifting multi-way valve which simultaneously controls a carriage lifting oil cylinder and a carriage top cover hydraulic sealing cover opener oil cylinder by utilizing a set of hydraulic power unit. The oil return device comprises a lifting reversing valve, a multi-way reversing valve and an oil return valve block, wherein an oil return channel arranged in the lifting reversing valve corresponds to an oil return channel, a first oil inlet channel and a second oil inlet channel in the multi-way reversing valve respectively, and sealing rings are arranged on the adjacent end faces of the lifting reversing valve, the multi-way reversing valve and the oil return valve block; the oil return channel and the second oil inlet channel of the multi-way reversing valve are communicated through an oil return valve block, and the lifting reversing valve, the multi-way reversing valve and the oil return valve block are in cross connection, fastening and matching through bolts. The invention effectively solves the problems of complex structure, high cost and the like in the prior art, and has the advantages of simplifying a hydraulic power system, convenient use and installation, low manufacturing cost, good use reliability and the like.

Description

Lifting multi-way valve
Technical Field
The invention belongs to a valve, in particular to a lifting multi-way valve which simultaneously controls a carriage lifting oil cylinder and a carriage top cover hydraulic sealing cover opener oil cylinder by utilizing a set of hydraulic power unit.
Background
At present, along with the stricter and stricter requirements on urban environmental protection, a plurality of urban dump trucks need to be covered with sealing devices on the road carriages to prevent secondary pollution, and because the carriages lift the telescopic multi-stage cylinders to lift the carriages weighing dozens of tons, the inner diameter of the multi-stage cylinders is large, the stroke of piston rods is long, and a high-pressure oil pump with large discharge capacity is needed as a power source. In contrast, since the hydraulic drive of the sealing device is less loaded than the lifting of the vehicle body, the hydraulic cylinder for driving the sealing device is small in inner diameter, short in stroke of the piston rod, and low in pressure. Based on the reasons, the existing dumper capping and sealing device adopts one set of independent electric hydraulic power unit to drive the hydraulic top cap sealing opener and the electric tarpaulin sealing cap. There are major problems in that: 1. because the independent electric hydraulic power unit adopts a power supply on an automobile battery, the battery can meet the required power requirement only by needing large current, the service life of the battery is shortened, and the large current is easy to generate sparks to burn out a circuit; 2. the storage battery is limited by the voltage and the current of the automobile, the integral output power of the storage battery is limited, the power of a hydraulic system is limited, the current requirement cannot be met, and accidents such as automobile spontaneous combustion and the like can be caused in serious cases; 3. the manufacturing cost is relatively high. And the other is to use a quantitative duplex pump as a power element. There are major problems in that: 1. because the flow of the quantitative double-link pump is preset and can not be adjusted, when the working condition in the running environment changes, the adaptability adjustment can not be carried out, and the matching performance is poor; 2. the quantitative duplex gear pump has high manufacturing cost and failure rate due to complex structure; 3. when one pump in the quantitative duplex pump is in a working state, the other pump is in a non-working state, but still carries out idle running to generate reactive loss, and the temperature rise of a working medium is caused while energy is wasted; 4. the double pump needs to be matched with two independent hydraulic systems, and has a complex structure and higher cost.
The applicant does not find the same or similar patent literature reports through search.
Disclosure of Invention
The invention aims to provide a lifting multi-way valve, in particular to a lifting multi-way valve which can simultaneously control a lifting device of a carriage of a dumper and a hydraulic top cover sealing opener of the dumper by using a set of hydraulic system, simplifies hydraulic power systems of the lifting device and the top cover sealing opener of the dumper, is convenient to use and install and reduces the manufacturing cost.
The overall technical concept of the invention is as follows:
the lifting multi-way valve comprises a lifting reversing valve, a multi-way reversing valve and an oil return valve block, wherein an oil return channel formed in the lifting reversing valve corresponds to an oil return channel, a first oil inlet channel and a second oil inlet channel in the multi-way reversing valve respectively, and sealing rings are arranged on the adjacent end faces of the lifting reversing valve, the multi-way reversing valve and the oil return valve block; wherein:
the oil return channel and the second oil inlet channel of the multi-way reversing valve are communicated through an oil return valve block, and the lifting reversing valve, the multi-way reversing valve and the oil return valve block are in cross connection, fastening and matching through bolts.
The specific technical concept of the invention is as follows:
the multi-way reversing valve is mainly used for controlling the work of a plurality of execution elements, and one or more execution elements can be selected according to the requirement; the optimized technical implementation means is that 2-10 multi-way reversing valves are arranged, adjacent multi-way reversing valves are overlapped, oil return channels, first oil inlet channels and second oil inlet channels in the adjacent multi-way reversing valves are correspondingly communicated respectively, and the oil return channels and the second oil inlet channels of the multi-way reversing valves at the tail ends are communicated through an oil return valve block.
The lifting reversing valve comprises a lifting reversing valve body, a lifting valve core, a lifting cylinder cover, a lifting gas piston, a lifting cylinder spacer bush, a lifting reset spring, an adjustable throttle valve, a pressure measuring seal plug, a lifting overflow valve, a multi-way overflow valve, an oil return channel, an oil return interface oil inlet interface and a lifting oil outlet; wherein:
the lifting valve core is axially arranged in the main hole of the lifting reversing valve body, the main hole of the lifting reversing valve body is axially and separately provided with a first sinking groove, a second sinking groove, a third sinking groove, a fourth sinking groove and a fifth sinking groove, the first sinking groove is communicated with the fifth sinking groove through an oil return channel, a reducing contraction portion which is axially and separately distributed on the lifting valve core corresponds to the second sinking groove, the third sinking groove, the fourth sinking groove and the fifth sinking groove, an oil inlet interface communicated with the third sinking groove is connected with an oil pump, and a lifting oil outlet connected with the fourth sinking groove is connected with a lifting oil cylinder.
In order to realize manual and pneumatic dual control of the lifting reversing valve body, the preferred technical implementation means is that the right end of a lifting valve core extends out of the lifting reversing valve body and forms an interface connected with a manual control device, the left end of the lifting valve core is fixed with a lifting air piston through a screw, the outer edge of the lifting air piston is in dynamic seal with the inner wall of a lifting air cylinder, the left end of the lifting air cylinder is in sealed assembly with a lifting air cylinder cover, a lifting control air port and a descending control air port are respectively communicated with the inner cavity of the lifting air cylinder on two sides of the lifting air piston, a lifting air cylinder spacer bush is radially arranged in the lifting air cylinder and is axially distributed on the right side of the lifting air piston at intervals, a lifting reset spring is sleeved on the surface of the lifting valve core between the reversing valve body and the lifting air cylinder spacer bush, and the side of the lifting.
The oil inlet channel in the lifting reversing valve comprises a first oil inlet channel which is communicated with a lifting oil inlet cavity body arranged on the lifting reversing valve body and passes through a sealing surface of a built-in pressure compensation regulating valve; the lifting reversing valve body is provided with a pressure measuring sealing plug communicated with the inner cavity of the lifting oil inlet cavity, and the right end of the lifting oil inlet cavity is provided with a lifting overflow valve; the second oil inlet channel is communicated with the third sinking groove through the third sinking groove and the lifting reversing valve body, correspondingly communicated with the second oil inlet channel arranged on the multi-way reversing valve to the oil return valve block and communicated with the oil return channel, and the right end of the multi-way oil inlet cavity is provided with a multi-way overflow valve and a locking nut arranged at the tail end of the throttle valve core.
The preferable structure design of the multi-way reversing valve is that the multi-way reversing valve comprises a multi-way reversing valve body, a multi-way valve core, a multi-way cylinder cover, a multi-way air piston, a multi-way cylinder spacer bush, a multi-way reset spring, a first one-way throttle valve, a second one-way throttle valve, a first oil outlet port, a second oil outlet port, an oil outlet channel, an oil return channel and a first oil inlet channel; wherein:
the multipath valve core is axially arranged in the main hole of the multipath reversing valve body, the left end of the multipath valve core is fixed with the multipath air piston through a screw, the outer edge of the multipath air piston is in dynamic seal with the inner wall of the multipath air cylinder, the left end of the multipath air cylinder is provided with a multipath air cylinder cover in a sealing way, a multipath first control air port and a multipath second control air port are respectively communicated with the multipath air cylinder inner cavities at two sides of the multipath air piston, a multipath air cylinder spacer bush is radially arranged in the multipath air cylinder and is axially distributed at the right side of the multipath air piston at intervals, a multipath reset spring is sleeved on the surface of the multipath valve core between the multipath reversing valve body and the multipath air cylinder spacer, the oil return channel is arranged in the multi-way reversing valve body, and the first one-way throttle valve and the second one-way throttle valve are respectively arranged in the oil outlet channels on the left side and the right side of the multi-way reversing valve body and control the conduction and the throttling of hydraulic oil in the oil outlet channels.
The right end of the multi-way valve core extends out of the multi-way reversing valve body and forms an interface connected with a manual control device.
The invention works as follows:
1. parking in carriage
When all the control valves are in a middle position state, after the power takeoff is started, oil supplied by the oil pump enters the multi-path oil inlet cavity through the oil inlet interface and the second oil inlet channel, one part of the oil directly enters the oil return channel through the adjustable throttle valve, the other part of the oil directly enters the oil return channel through the second oil inlet channel arranged in the multi-path reversing valve body, a cavity formed in the oil return valve block, the oil return channels on two sides and the oil return tank behind the oil return interface, and the hydraulic system is in a middle position unloading.
2. Carriage lifting
The air is supplied to the lifting control air port through the control air valve, the lifting air piston is pushed to drive the lifting valve core to move rightwards, the second sinking groove and the third sinking groove are in a closed state under the action of a shoulder of the lifting valve core, meanwhile, the third sinking groove and the fourth sinking groove are in a conducting state, and hydraulic oil of the oil inlet connector enters the fourth sinking groove.
3. Carriage descending
The air supply is carried out to the descending control air port through the control air valve, the lifting air piston is pushed to drive the lifting valve core to move leftwards, the second sinking groove and the third sinking groove are in a conduction state under the action of a shoulder of the lifting valve core, meanwhile, the fourth sinking groove and the fifth sinking groove are in a conduction state, the oil pump oil supply enters the multi-path oil inlet cavity through the oil inlet interface and the second oil inlet channel, the oil cylinder returns the oil tank after passing through the cavity formed in the oil return valve block and the second oil inlet channel arranged in the multi-path reversing valve body, the oil return channels on two sides and the oil return interface, meanwhile, the oil cylinder returns the hydraulic oil, and the carriage begins to descend after passing through the lifting oil outlet interface, the fourth sinking groove, the fifth sinking groove, the oil.
4. Rear door opening and closing
The control air valve supplies air to the multi-path first control air port, the multi-path air piston is pushed to drive the multi-path valve core to move rightwards, the second oil inlet channel is sealed under the action of a shoulder of the multi-path valve core, the first oil inlet channel is communicated with the left oil outlet channel, the first one-way throttle valve is opened by hydraulic oil, the hydraulic oil enters the rodless cavity of the oil cylinder through the first oil outlet port, the cylinder rod is pushed to extend out, and the back door is driven to open. The hydraulic oil in the rod cavity of the synchronous oil cylinder is discharged, the second one-way throttle valve is closed through the second oil outlet port and the oil outlet channel on the right side, and the hydraulic oil is throttled by the throttle hole and then returns to the oil tank through the oil return channel. Otherwise, the control air valve supplies air to the multi-path second control air port, and the process is opposite to the process, so that the rear door is closed.
When the multi-way reversing valve works in any direction, the first oil inlet channel and the second oil inlet channel are respectively communicated with the lifting oil inlet cavity and the multi-way oil inlet cavity, hydraulic oil is returned to the oil tank through the flow-dividing unloading part of the adjustable throttle valve, the multi-way overflow valve keeps the set oil supply pressure, and oil is continuously supplied to the multi-way reversing valve through the first oil inlet channel.
Because the volumes of the rod cavity and the rodless cavity of the oil cylinder are different, the diameters of the orifices of the first throttling check valve and the second throttling check valve corresponding to the rod cavity and the rodless cavity of the oil cylinder are designed to be different, so that the extending and retracting speeds of the cylinder rod are controlled to be stable and consistent.
5. Roof working
The working principle of the reversing valve is the same as that of opening and closing of the back door, and if a plurality of controls exist, the number of the multi-way reversing valves with the same structure can be increased according to needs, and the working principle of the reversing valve is the same.
The applicant needs to state that:
in the description of the present invention, the terms "top", "lower", "surface", "inner", "left", "right", "axial", "radial", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of simplifying the description of the present invention, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
The invention has the substantive characteristics and the obvious technical progress that:
1. the hydraulic power system has the advantages of simplifying the hydraulic power system, being convenient to use and install, low in manufacturing cost and good in use reliability, and avoiding damage caused by overload of a storage battery and hidden danger of fire accidents caused by large current during working.
2. The structural design of the one-way throttle valve ensures that the telescopic speeds of the rod cavity and the rodless cavity of the oil cylinder are stable and consistent, and avoids the impact or vibration of an action execution element caused by load change.
3. The structural design of the adjustable throttle valve enables hydraulic shunting with large flow difference to be easily realized, partial flow of the overflow valve is unloaded, and therefore the multi-path overflow valve keeps set pressure, the failure rate of the multi-path overflow valve is reduced, and the service life of the multi-path overflow valve is prolonged.
4. Due to the structural design of the multi-path overflow valve, the oil temperature rise and the energy consumption caused by large-flow unloading are effectively avoided and reduced.
5. The lifting reversing valve and the multi-way reversing valve are designed in a double structure capable of realizing pneumatic and manual control, and the control mode is various and flexible.
6. The multi-way reversing valve adopts the structural design of an integrated valve core, the rigidity and the concentricity of the valve core are effectively ensured, and the valve core running blockage caused by insufficient rigidity or concentricity is prevented.
Drawings
Fig. 1 is a control schematic diagram of a hydraulic system according to the present invention.
Fig. 2 is an overall external view of the present invention.
Fig. 3 is a schematic view of the overall structure of the present invention.
Fig. 4 is a view from B-B of fig. 3.
Fig. 5 is a view in the direction of C-C of fig. 3.
Fig. 6 is a view from direction D-D of fig. 3.
Fig. 7 is a view from E-E of fig. 3.
The reference numbers in the drawings are as follows:
1. an oil return valve block; 2. an oil return passage; 3. a bolt; 4. a seal ring; 5. a multi-way directional valve; 6. lifting the reversing valve; 7. an adjustable throttle valve; 8. an oil return interface; 9. an oil inlet interface; 10. a first oil inlet passage; 11. a pressure compensation regulating valve; 12. pressure measuring and sealing; 13. a second oil inlet passage; 14. lifting the control air port; 15. a descent control gas port; 16. a lifting cylinder; 17. lifting a reset spring; 18. a first sinking groove, 19 and a second sinking groove; 20. a third sink tank; 21. lifting the oil outlet; 22. a fifth sinking groove; 23. lifting the reversing valve body; 24. lifting the valve core; 25. lifting the cylinder head; 26. lifting the gas piston; 27. lifting the cylinder spacer bush; 28. a fourth sink tank; 29. locking the nut; 30. a throttle valve sleeve; 31. a throttle valve cartridge; 32. A throttle valve sleeve; 33. lifting the oil inlet cavity; 34. lifting the overflow valve; 35. a multi-way overflow valve; 36. a plurality of oil inlet cavities; 37. a plurality of first control air ports; 38. a plurality of second control air ports; 39. a plurality of paths of air cylinders; 40. a first one-way throttle valve; 41. a first oil outlet port; 42. a multi-way reversing valve body; 43. a second oil outlet port; 44. a second one-way throttle valve; 45. a plurality of valve cores; 46. a plurality of paths of cylinder heads; 47. a plurality of paths of air pistons; 48. a plurality of paths of cylinder spacer bushes; 49. a plurality of return springs; 50. an oil outlet channel.
Detailed Description
The present invention is further described with reference to the following examples, which should not be construed as limiting the scope of the present invention, but the scope of the present invention is defined by the appended claims, and any equivalent technical means may be substituted according to the present specification without departing from the scope of the present invention.
Examples
The overall structure of the embodiment is shown in the figure, and comprises a lifting reversing valve, a multi-way reversing valve and an oil return valve block, wherein an oil return channel 2 formed in the lifting reversing valve 6 corresponds to the oil return channel 2, a first oil inlet channel 10 and a second oil inlet channel 13 in the multi-way reversing valve 5 respectively, and sealing rings 4 are arranged on the adjacent end faces of the lifting reversing valve 6, the multi-way reversing valve 5 and the oil return valve block 1; wherein:
the multi-way reversing valve is 3, the adjacent multi-way reversing valves 5 are overlapped, the oil return channels 2, the first oil inlet channels 10 and the second oil inlet channels 13 in the adjacent multi-way reversing valves are correspondingly communicated respectively, the oil return channels 2 and the second oil inlet channels 13 of the multi-way reversing valves 5 located at the tail ends are communicated through the oil return valve block 1, and the lifting reversing valves 6, the multi-way reversing valves 5 and the oil return valve block 1 are in cross connection, fastening and matching through the bolts 3.
The lifting reversing valve 6 comprises a lifting reversing valve body 23, a lifting valve core 24, a lifting cylinder 16, a lifting cylinder cover 25, a lifting gas piston 26, a lifting cylinder spacer 27, a lifting reset spring 17, an adjustable throttle valve 7, a pressure measuring seal plug 12, a lifting overflow valve 4, a multi-way overflow valve 35, an oil return channel 2, an oil inlet interface 9 of an oil return interface 8 and a lifting oil outlet 21; wherein:
the lifting valve core 24 is axially arranged in a main hole of the lifting reversing valve body 23, the main hole of the lifting reversing valve body 23 is axially provided with a first sinking groove 18, a second sinking groove 19, a third sinking groove 20, a fourth sinking groove 28 and a fifth sinking groove 22 at intervals, the first sinking groove 18 is communicated with the fifth sinking groove 22 through an oil return channel 2, the reducing contraction parts which are axially distributed at intervals on the lifting valve core 24 correspond to the second sinking groove 19, the third sinking groove 20, the fourth sinking groove 28 and the fifth sinking groove 22, an oil inlet connector 9 communicated with the third sinking groove 20 is connected with an oil pump, and a lifting oil outlet 21 connected with the fourth sinking groove 28 is connected with a lifting oil cylinder.
The right end of a lifting valve core 24 extends out of a lifting reversing valve body 23 and forms an interface connected with a manual control device, the left end of the lifting valve core 24 is fixed with a lifting air piston 26 through a screw, the outer edge of the lifting air piston 26 is in dynamic seal with the inner wall of a lifting air cylinder 16, the left end of the lifting air cylinder 16 is in sealing assembly with a lifting air cylinder cover 25, a lifting control air port 14 and a descending control air port 15 are respectively communicated with the inner cavities of the lifting air cylinders at two sides of the lifting air piston 26, a lifting air cylinder spacer sleeve 27 is radially arranged in the lifting air cylinder 16 and axially distributed at the right side of the lifting air piston 26 at intervals, a lifting reset spring 17 is sleeved on the surface of the lifting valve core 24 between the reversing valve body 23 and the lifting air cylinder spacer sleeve 27, and the side of the lifting reversing valve.
The oil inlet channel in the lifting reversing valve 6 comprises a first oil inlet channel 10 which is opened on a lifting oil inlet cavity 33 on the lifting reversing valve body 23 and is communicated with the lifting oil inlet cavity, and a sealing surface of a built-in pressure compensation regulating valve 11 is arranged; the lifting reversing valve body 23 is provided with a pressure measuring sealing plug 12 communicated with the inner cavity of the lifting oil inlet cavity 33, and the right end of the lifting oil inlet cavity 33 is provided with a lifting overflow valve 34; the second oil inlet channel 13 is communicated with the third sinking groove 20 through the lifting reversing valve body 6 through the third sinking groove 20, correspondingly communicated with the second oil inlet channel 13 arranged on the multi-way reversing valve 5 to the oil return valve block 1 and communicated with the oil return channel, and the right end of the multi-way oil inlet cavity 36 is provided with a multi-way overflow valve 3 and a locking nut 29 arranged at the tail end of the throttle valve core 31.
The multi-way reversing valve 5 comprises a multi-way reversing valve body 42, a multi-way valve core 45, a multi-way cylinder 39, a multi-way cylinder cover 46, a multi-way air piston 47, a multi-way cylinder spacer 48, a multi-way return spring 49, a first one-way throttle valve 40, a second one-way throttle valve 44, a first oil outlet port 41, a second oil outlet port 43, an oil outlet channel 50, an oil return channel 2 and a first oil inlet channel 10; wherein:
the multi-way valve core 45 is axially arranged in a main hole of the multi-way reversing valve body 42, the left end of the multi-way valve core 45 is fixed with a multi-way air piston 47 through a screw, the outer edge of the multi-way air piston 47 is in dynamic seal with the inner wall of the multi-way air cylinder 39, the left end of the multi-way air cylinder 39 is in seal assembly with a multi-way cylinder cover 46, a multi-way first control air port 37 and a multi-way second control air port 38 are respectively communicated with the inner cavities of the multi-way air cylinders 39 on two sides of the multi-way air piston 47, a multi-way cylinder spacer 48 is radially arranged in the multi-way air cylinder 39 and axially distributed on the right side of the multi-way air piston 47 at intervals, a multi-way reset spring 49 is sleeved on the surface of the multi-way valve core 45 between the multi-way reversing valve body 42 and the multi-way cylinder spacer, And the oil outlet channel 50 on the right side controls the conduction and the throttling of hydraulic oil in the oil outlet channel.
The right end of the multi-way valve core 45 extends out of the multi-way reversing valve body 42 and forms an interface connected with a manual control device.
The remainder being as described above.

Claims (8)

1. The lifting multi-way valve comprises a lifting reversing valve, a multi-way reversing valve and an oil return valve block, and is characterized in that an oil return channel (2) formed in the lifting reversing valve (6) corresponds to an oil return channel (2), a first oil inlet channel (10) and a second oil inlet channel (13) in the multi-way reversing valve (5) respectively, and sealing rings (4) are arranged on the adjacent end faces of the lifting reversing valve (6), the multi-way reversing valve (5) and the oil return valve block (1); wherein:
an oil return channel (2) and a second oil inlet channel (13) of the multi-way reversing valve (5) are communicated through an oil return valve block (1), and the lifting reversing valve (6), the multi-way reversing valve (5) and the oil return valve block (1) are in cross connection, fastening and matching through bolts (3).
2. The lifting multi-way valve according to claim 1, wherein the number of the multi-way reversing valves is 2-10, the adjacent multi-way reversing valves (5) are stacked, the oil return channels (2), the first oil inlet channels (10) and the second oil inlet channels (13) in the adjacent multi-way reversing valves are correspondingly communicated with each other, and the oil return channels (2) and the second oil inlet channels (13) of the multi-way reversing valves (5) at the tail ends are communicated with each other through the oil return valve block (1).
3. The lifting multi-way valve according to claim 1, characterized in that the lifting reversing valve (6) comprises a lifting reversing valve body (23), a lifting valve core (24), a lifting cylinder (16), a lifting cylinder cover (25), a lifting gas piston (26), a lifting cylinder spacer bush (27), a lifting reset spring (17), an adjustable throttle valve (7), a pressure measuring seal plug (12), a lifting overflow valve (34), a multi-way overflow valve (35), an oil return channel (2), an oil return interface (8), an oil inlet interface (9) and a lifting oil outlet (21); wherein:
the lifting valve core (24) is axially arranged in a main hole of the lifting reversing valve body (23), a first sinking groove (18), a second sinking groove (19), a third sinking groove (20), a fourth sinking groove (28) and a fifth sinking groove (22) are axially arranged in the main hole of the lifting reversing valve body (23) at intervals, the first sinking groove (18) is communicated with the fifth sinking groove (22) through an oil return channel (2), a reducing contraction portion which is axially distributed on the lifting valve core (24) at intervals is communicated with the second sinking groove (19), the third sinking groove (20), the fourth sinking groove (28) and the fifth sinking groove (22), an oil inlet interface (9) communicated with the third sinking groove (20) is connected with an oil pump, and a lifting oil outlet (21) connected with the fourth sinking groove (28) is connected with a lifting oil cylinder.
4. The lifting multi-way valve according to claim 3, characterized in that the right end of the lifting valve core (24) extends out of the lifting reversing valve body (23) and forms an interface connected with a manual control device, the left end of the lifting valve core (24) is fixed with the lifting air piston (26) through screws, the outer edge of the lifting air piston (26) is in dynamic seal with the inner wall of the lifting air cylinder (16), the left end of the lifting air cylinder (16) is provided with a lifting air cylinder cover (25) in a sealing manner, the lifting control air ports (14) and the descending control air ports (15) are respectively communicated with the lifting air cylinder inner cavities at two sides of the lifting air piston (26), the lifting air cylinder spacer (27) is arranged in the lifting air cylinder (16) along the radial direction and axially distributed on the right side of the lifting air piston (26) at intervals, the lifting reset spring (17) is sleeved on the surface of the lifting valve core (24) between the reversing valve body (23) and the, an oil return interface (8) communicated with the oil return channel (2) is arranged on the side surface of the lifting reversing valve body (23) and is connected with an oil tank.
5. The lifting multi-way valve according to claim 3 or 4, characterized in that the oil inlet channels in the lifting reversing valve (6) comprise a first oil inlet channel (10) and a second oil inlet channel (13), an oil inlet interface (9) of the first oil inlet channel (10) is communicated with a lifting oil inlet cavity (33) arranged on the lifting reversing valve body (23) through a third sinking groove (20), and is correspondingly communicated with the first oil inlet channel (10) arranged in the multi-way reversing valve (5) to the sealing surface of the oil return valve block (1) through a built-in pressure compensation regulating valve (11); the lifting reversing valve body (23) is provided with a pressure measuring sealing plug (12) communicated with the inner cavity of the lifting oil inlet cavity (33), and the right end of the lifting oil inlet cavity (33) is provided with a lifting overflow valve (34); the second oil inlet channel (13) is communicated with the multi-path oil inlet cavity (36) through a third sinking groove (20) and a second sinking groove (19) communicated with the third sinking groove (20) through a main hole of the lifting reversing valve body (23), the second oil inlet channel (13) correspondingly communicated with the multi-path reversing valve (5) is communicated with the oil return valve block (1) and communicated with the oil return channel, a multi-path overflow valve (35) is arranged at the right end of the multi-path oil inlet cavity (36), an adjustable throttle valve (7) is arranged at the left end of the multi-path oil inlet cavity (36), and the fourth sinking groove (28) is connected with a lifting oil outlet connector (21).
6. The lifting multiway valve as recited in claim 5, characterized in that the adjustable throttle valve (7) comprises a throttle valve sleeve (32), a throttle valve core (31) assembled in the inner cavity of the throttle valve sleeve (32) along the axial direction, and a lock nut (29) arranged at the tail end of the throttle valve core (31), wherein the front end cone of the throttle valve core (31) is coaxially assembled with the through hole of the throttle valve sleeve (32), and the taper of the front end cone of the throttle valve core (31) is less than 10 °.
7. The lifting multi-way valve according to claim 1 or 2, characterized in that the multi-way reversing valve (5) comprises a multi-way reversing valve body (42), a multi-way valve core (45), a multi-way cylinder (39), a multi-way cylinder cover (46), a multi-way air piston (47), a multi-way cylinder spacer (48), a multi-way return spring (49), a first one-way throttle valve (40), a second one-way throttle valve (44), a first oil outlet port (41), a second oil outlet port (43), an oil outlet channel (50), an oil return channel (2) and a first oil inlet channel (10); wherein:
the multi-way valve core (45) is axially arranged in a main hole of the multi-way reversing valve body (42), the left end of the multi-way valve core (45) is fixed with a multi-way air piston (47) through a screw, the outer edge of the multi-way air piston (47) is in dynamic seal with the inner wall of the multi-way air cylinder (39), the left end of the multi-way air cylinder (39) is hermetically assembled with a multi-way cylinder cover (46), a multi-way first control air port (37) and a multi-way second control air port (38) are respectively communicated with the inner cavities of the multi-way air cylinder (39) on the two sides of the multi-way air piston (47), a multi-way cylinder spacer sleeve (48) is radially arranged in the multi-way air cylinder (39) and axially distributed on the right side of the multi-way air piston (47) at intervals, a multi-way reset spring (49) is sleeved on the surface of the multi-way valve core, The oil return channel (2) is arranged in the multi-way reversing valve body (42), and the first one-way throttle valve (40) and the second one-way throttle valve (44) are respectively arranged in the oil outlet channels (50) on the left side and the right side of the multi-way reversing valve body (42) and control the conduction and the throttling of hydraulic oil in the oil outlet channels.
8. Lifting multi-way valve according to claim 7, characterized in that the right end of the multi-way spool (45) extends outside the multi-way selector valve body (42) and forms a connection to a manual control device.
CN202010364199.1A 2020-04-30 2020-04-30 Lifting multi-way valve Pending CN111425474A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010364199.1A CN111425474A (en) 2020-04-30 2020-04-30 Lifting multi-way valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010364199.1A CN111425474A (en) 2020-04-30 2020-04-30 Lifting multi-way valve

Publications (1)

Publication Number Publication Date
CN111425474A true CN111425474A (en) 2020-07-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010364199.1A Pending CN111425474A (en) 2020-04-30 2020-04-30 Lifting multi-way valve

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Country Link
CN (1) CN111425474A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112065802A (en) * 2020-09-29 2020-12-11 浙江海宏液压科技股份有限公司 Hydraulic lifting system
CN113719487A (en) * 2021-07-21 2021-11-30 北京中金泰达电液科技有限公司 Low-temperature hydraulic combined valve terminal
CN115182994A (en) * 2022-06-27 2022-10-14 陕西法士特齿轮有限责任公司 Interlocking integrated valve, gas circuit protection system and control method thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112065802A (en) * 2020-09-29 2020-12-11 浙江海宏液压科技股份有限公司 Hydraulic lifting system
CN113719487A (en) * 2021-07-21 2021-11-30 北京中金泰达电液科技有限公司 Low-temperature hydraulic combined valve terminal
CN113719487B (en) * 2021-07-21 2022-04-15 北京中金泰达电液科技有限公司 Low-temperature hydraulic combined valve terminal
CN115182994A (en) * 2022-06-27 2022-10-14 陕西法士特齿轮有限责任公司 Interlocking integrated valve, gas circuit protection system and control method thereof
CN115182994B (en) * 2022-06-27 2023-12-08 陕西法士特齿轮有限责任公司 Interlocking integrated valve, protection gas circuit system and control method of protection gas circuit system

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