CN201206573Y

CN201206573Y - Pile pressing multiple-way valve

Info

Publication number: CN201206573Y
Application number: CNU2008200854134U
Authority: CN
Inventors: 梅张龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-04-18
Filing date: 2008-04-18
Publication date: 2009-03-11
Anticipated expiration: 2018-04-18

Abstract

The utility model discloses a pressed pile multi-way valve, which is formed by combining and connecting four valve bodies. A valve plug is arranged in the valve body. Respective passages of the valve bodies are communicated. The openings of the passages are sealed through O-shaped sealing rings. The internal structures of the valve bodies have the same nominal sizes. A check valve is arranged in the P position of an oil inlet. The check valve comprises a spring seat 10 of the check valve, a return spring 11 of the check valve, and a check valve plug 12. The utility model has the advantages of high reliability, high pressure resistance, long service life and high pile pressing speed.

Description

A kind of piling multi-way valve

Technical field

The utility model relates to a kind of multi-way valve that is used for Hydraulic System of Hydrostatic Pressure Pile Driver control, particularly a kind of piling multi-way valve that is used for the piling system.

Background technique

The problem that the like product of present domestic use exists mainly contains: valve body material is selected foundry goods for use, casting defects such as airhole is often arranged, below the working pressure 20MPa on the low side.If overpressure (〉=20MPa) multi-way valve leaks seriously, and working life is short.Oil circuit adopts conventional hydraulic principle; Same oil pump flow piling speed is slower.When operating load changed, the piling velocity variations was little.Oil pump electrical machinery can not permanent power work, inefficiency.

Summary of the invention

At the deficiency of above-mentioned technology, the utility model provides a kind of reliability height, withstand voltage height, long service life, the fireballing multi-way valve of piling.

In order to achieve the above object, technical solution adopted in the utility model is:

A kind of piling multi-way valve, be connected together by four valve bodies, spool is arranged in the valve body, passage between each valve body links to each other, and by the sealing mutually of O shape circle, each valve inner structure nominal size is identical between the passway between valve body and the valve body, filler opening p place is provided with one-way valve, one-way valve comprises check valve spring seat 10, one-way valve Returnning spring 11 and nonreturn valve core 12, and oil inlet P communicates with the aperture and the oil return inlet T of four multi-way valve.

The beneficial effects of the utility model: reliability height, withstand voltage height, long service life, piling speed are fast.

Description of drawings

Fig. 1. hydraulic schematic diagram of the present utility model.

Fig. 2. profile plan view of the present utility model.

Fig. 3. internal structure sectional view of the present utility model.

Fig. 4. the A-A of Fig. 3 is to view.

Fig. 5. the B-B of Fig. 3 is to view.

Fig. 6. the C-C of Fig. 3 is to view.

Fig. 7. the D-D upset view of Fig. 3.

Embodiment

See also Fig. 1-Fig. 7 its implementation process be described:

A kind of piling multi-way valve is connected together by four plate valves, and spool is arranged in the valve body, and the passage between each valve body links to each other, and by the sealing mutually of O shape circle, each valve inner structure nominal size is identical, is convenient to produce in batches between the passway of valve body.Filler opening p place is provided with one-way valve.Oil inlet P communicates with the P mouth of four multi-way valve, and the return opening of four multi-way valve communicates with oil return piece T.Oil inlet P communicates with four multi-way valve, and the oil return inlet T of four multi-way valve communicates with the oil return piece.The piling multi-way valve is provided with piling relief valve 27 and backhaul relief valve 28.Every plate valve all is connected with oil cylinder, the work of control oil cylinder.The piling multi-way valve is provided with piling relief valve 27 and backhaul relief valve 28.This piling multi-way valve, valve body raw material selection 40Cr steel forgings, machined flow, precision machining manufacturing.It is combined with the multi-way valve of control folder stake oil cylinder and secondary piling oil cylinder.Remote control mouth K1, K2, connecting thread are M12x1.25, the work of basic control system relief valve and off-load.P is a filler opening, and T is a return opening.For separately adjustable clamp stake pressure and piling pressure, ad hoc folder stake relief valve and piling relief valve.In order to prevent the multi-way valve variation in pressure in when commutation, pile clamping box sinks, and filler opening has been set up one-way valve.One-way valve comprises check

valve spring seat

10,8 shutoff of technology plug screw is arranged below the one-way valve Returnning spring 11, nonreturn valve core 12, one-way valve.Fixing between valve body and the valve body with 4 boom bolts 9.In order to improve piling speed, this piling multi-way valve master piling oil cylinder adopts the hydraulic differential principle, combines with two multi-way valve.When piling pressure is low (≤18MPa), pull multi-way valve handle 3 to the piling position, pull multi-way valve handle 4 to fast pressure position; Main piling oil cylinder epicoele this moment (rodless cavity) is when advancing pressure oil, and the oil of cavity of resorption (rod chamber) flows back to epicoele (rodless cavity) by multi-way valve, and epicoele has increased flow greatly like this, has improved piling speed.When system pressure slowly was increased to 18MPa, handle 4 was pulled and is pressed the position slowly, and the oil of main piling oil cylinder cavity of resorption flows back to fuel tank by multi-way valve, realizes normal piling.In order to prevent that speed from pressing lever operated error to cause main piling oil cylinder cavity of resorption pocketed oil, ad hoc cavity of resorption relief valve (backhaul relief valve) is placed restrictions on cavity of resorption maximum pressure 22MPa.For prevent multi-way valve in let out the commutation vibration of opening folder stake Pilot operated check valve and reducing major-minor piling oil cylinder, three control valves adopt " N " type slide-valve gears, are beneficial to release, reduce reversing impact.

Ask for an interview Fig. 1: P is a filler opening, and T is a return opening, and A1 mouth, B1 mouth connect folder stake cylinder rod chamber and rodless cavity respectively, folder stake relief valve adjustable clamp stake oil cylinder rodless cavity pressure; A2 mouth, B2 mouth connect secondary piling oil cylinder rodless cavity and rod chamber respectively; A3 mouth, B3 mouth connect main piling oil cylinder rodless cavity and rod chamber respectively, piling relief valve 27 is regulated piling pressure, the main piling cylinder rod chamber maximum pressure of backhaul relief valve 28 controls, folder stake relief valve 29 adjustable clamp stake pressure, oil-feed piece 13, K1 mouth and K2 mouth are arranged, K1, K2 mouth welding system master relief valve remote control mouth on the oil return piece 15 respectively.As can be seen, pine stake 36 control respectively by a folder stake oil cylinder 30, secondary piling oil cylinder 31, main piling oil cylinder 32 and folder stake 37, secondary piling 38 and pair push back journey 39, main piling 41 and propose stake 42 from schematic diagram, simultaneously, press slowly 43 and soon pressure 44 also link to each other with main piling 32.In addition, hydraulic control fuel outlet valve 33 links to each other with secondary piling oil cylinder 31, and hydraulic control fuel outlet valve 34 links to each other with main piling oil cylinder 32, and two stop valves 35 are arranged between main piling oil cylinder 32 and the main piling 41, and two stop valves 35 are arranged between secondary piling fuel tank 31 and the secondary piling 38.

Ask for an interview Fig. 2-Fig. 7: press valve rod 16 soon, piling valve rod 17, secondary piling valve rod 18 are separately positioned on fast pressure valve piece 23, and piling valve piece 24 is on the secondary piling valve piece 25.The fast valve rod 16 of pressing, piling valve rod 17, secondary piling valve rod 18, two of folder stake valve rod 19 all by hydrogenation nitrile rubber O type circle 14 and 7 sealings.Bonnet 20 is positioned at the top of above-mentioned valve rod, and front cover 26 is corresponding with bonnet 20.Steel ball Returnning spring 21 is arranged, locking ball 22 in the valve stem tip.System pressure oil overcomes P1, P2, the P3 mouth that spring force enters every plate valve by nonreturn valve core 12 behind the P mouth, P1, P2, P3 are oil circuit in parallel, and pressure equates.P mouth and P1, P2, P3 pressure differ just one-way valve Returnning spring pressure drop, and generally opening pressure is 0.05～0.1MPa, open pressure and can omit and disregard.Seal with NBR90 hardness nitrile rubber O type circle 5 between every plate valve, to prevent that seal ring from being washed out.Two of every plate valve valve rod is with HNBR70 hardness hydrogenation nitrile rubber O type circle 14 and 7 sealings, to increase wear-resisting increasing the service life.To change conveniently in order installing and removing, to adopt the end seal circle to be contained on the valve rod, the head seal circle is contained in the valve body hole, and other adds dust ring 6 and prevents that rubbish, dust from entering valve body.When all operating handles (handle) when mediating, system's relief valve remote control mouth control oil enters from oil-feed piece K1 mouth, by two apertures on 4 multi-way valve valve rods, goes out from oil return piece K2 mouth and connects other multi-way valve remote control mouth or oil sump tank, system unloaded.When pulling the 1st operating handle (handle), valve rod cuts off the oil circuit of aperture, and the remote control mouth is cut off system's relief valve and boosts.Pressure oil P1 enters the A1 mouth, and the B1 mouth enters oil return inlet T or the P1 mouth enters the B1 mouth, and the A1 mouth enters oil return inlet T, and a realization folder stake oil cylinder unclamps or clamps, because of a folder stake relief valve pressure hydraulic fluid port communicates with the B1 mouth.So when the B1 mouth entered pressure oil, folder stake relief valve can be regulated the B1 mouth pressure.

When pulling the 2nd operating handle (handle), valve rod cuts off the oil circuit of aperture equally, and system's relief valve boosts, and pressure oil P2 enters the A2 mouth, and the B2 mouth enters oil return inlet T, or the P2 mouth enters the B2 mouth, and the A2 mouth enters oil return inlet T, realizes that secondary piling oil cylinder descends or rises.

The rising of main piling oil cylinder and the Joystick 3 and 4 simultaneously that descends.Handle 3 draws forward during fast the pressure, and handle 4 is toward pusher.Such two valve rods all cut off the oil circuit of aperture on the valve rod, main relief valve boosts, P3 pressure oil enters the A3 mouth, enter the piling oil cylinder rodless cavity simultaneously, and communicate by valve rod 16 shoulders and B3 mouth, piling cylinder rod chamber oil enters main piling oil cylinder rodless cavity by B3 mouth and valve rod 16 shoulders through the A3 mouth like this, forms differential connection and improves piling speed.When system pressure rise to 〉=during 15MPa, operating handle 4 draws forward, the B3 mouth communicates with oil return inlet T like this, main piling cylinder rod chamber oil enters oil return inlet T by the B3 mouth, realizes normal piling.Just operating handle 4 is shifted onto the neutral position if realize proposing stake (or backhaul), toward pusher, make operating handle 3 P3 pressure oil enter the B3 mouth, enter main piling cylinder rod chamber simultaneously, main piling oil cylinder rodless cavity oil communicates by A3 mouth and oil return inlet T, realizes backhaul.Because of the piling relief valve is connected in parallel on the A3 mouth, so just can regulate piling pressure size.The backhaul relief valve is connected in parallel on the B3 mouth, just can regulate and carry stake (or backhaul) pressure.

Claims

1, a kind of piling multi-way valve is connected together by four valve bodies, and spool is arranged in the valve body, passage between each valve body links to each other, by the sealing mutually of O shape circle, each valve inner structure nominal size is identical, it is characterized in that between the passway between valve body and the valve body, filler opening (p) locates to be provided with one-way valve, one-way valve comprises check valve spring seat (10), one-way valve Returnning spring (11) and nonreturn valve core (12), and filler opening (P) communicates with the aperture and the return opening (T) of four multi-way valve.

2, a kind of piling multi-way valve according to claim 1 is characterized in that every plate valve all is connected with oil cylinder, the work of control oil cylinder.

3, a kind of piling multi-way valve according to claim 1 is characterized in that, the piling multi-way valve is provided with piling relief valve (27) and backhaul relief valve (28).