CN207131659U - Guide's integrated multipath valve - Google Patents

Abstract

A kind of guide's integrated multipath valve.Solve the problems, such as system hydraulic oil flow direction light load when each composite move of existing crane links and cause heavy duty slow in one's movements or even be failure to actuate.It includes valve body, multiple valve groups are provided with described valve body, valve rod is equipped with each valve group, each valve group is correspondingly arranged on a compensator, the oil inlet of the compensator is connected with the pressure oil circuit of valve group and its oil-out is connected with actuator port, and the feedback oil of actuator port is connected with the feedback hydraulic fluid port of compensator, and the different compensators feedback hydraulic fluid port in different valve groups is interconnected, described valve body is provided with oil return opening, and return check valve is provided with described oil return opening.The feedback hydraulic fluid port of different compensators is connected in the utility model, during composite move, the big feedback pressure oil of load pressure turns down the opening of other compensators, so that pressure oil is more assigned to the larger one end of load in the unit interval, realize pressure compensation, Product Safety height.

Description

Guide's integrated multipath valve

Technical field

It the utility model is related to a kind of banked direction control valves, and in particular to a kind of guide's integrated multipath valve.

Background technology

Present engineering machinery generally uses double pump, and its main purpose has two：One, in order to preferably realize the section of system Can, prevent from causing larger energy loss by single huge discharge oil pump oil-feed；Secondly, in order to realize more preferable operating characteristics, two Pump work preferably control and can act good composite performance and each dynamic by the break-make of converging valve among manual control more Operate the performances such as fine motion.Existing telescopic arm crane typically has following action by what banked direction control valves was controlled：Volume Raise, be luffing, flexible.And be frequently necessary to carry out composite move between elevator and luffing, elevator and flexible and elevator and elevator, therefore It is required that banked direction control valves has preferable flow saturation resistance function；Other crane hydraulic system is frequently with double pump fuel feeding, the fuel feeding Mode can realize oil-feed is lost less, single double pump of action switches etc..It is not provided with pressing substantially in existing crane hydraulic system Force compensating device, when system does composite move, the hydraulic oil of each hydraulic fluid port can not distribute according to need so that the action of underload can enter It is capable and heavy load slow in one's movements or even slack, operating efficiency is so not only reduced, also in the presence of certain potential safety hazard.

The content of the invention

The light load of system hydraulic oil flow direction causes during composite move linkage each for existing crane in solution background technology The problem of heavy duty is slow in one's movements or even is failure to actuate, the utility model provide a kind of guide's integrated multipath valve.

The technical solution of the utility model is：A kind of guide's integrated multipath valve, including valve body, it is provided with described valve body Multiple valve groups, valve rod are equipped with each valve group, each valve group is correspondingly arranged on a compensator, the oil inlet of the compensator It is connected with the pressure oil circuit of valve group and its oil-out is connected with actuator port, the feedback of the feedback oil and compensator of actuator port Hydraulic fluid port is connected, and the different compensators feedback hydraulic fluid port in different valve groups is interconnected, and described valve body is provided with oil return opening, described Oil return opening in be provided with return check valve.

As it is of the present utility model it is a kind of improve, be correspondingly arranged on overflow valve in each described valve group, described valve rod, Overflow valve and compensator, which correspond, to be set.

As further improvement of the utility model, the valve rod in different valve groups is set with overflow valve layering.

As further improvement of the utility model, described valve body uses casting integrated shaping.

As further improvement of the utility model, described compensator includes screw plug and compensating spool, described screw plug Counterbalance spring is provided between compensating spool, described counterbalance spring has movement tendency of the driving compensating spool close to valve rod.

As further improvement of the utility model, feedback cavity is formed between described screw plug and compensating spool.

As further improvement of the utility model, be communicated with hole on described compensating spool, described intercommunicating pore with The pressure oil circuit of valve group is connected, and described intercommunicating pore is engaged to form pressure chamber with valve interior wall.

As further improvement of the utility model, described return check valve includes block piece and oil return valve element, described Block piece and oil return valve element be all provided with valve body, the binding face of described oil return valve element and valve interior wall is the conical surface.

As further improvement of the utility model, described oil return valve element is provided with sealing, and described sealing is in Inverted Y-shaped, and the outer surface of sealing is arc surface.

The beneficial effects of the utility model are, size is opened by compensator, can quickly establish oil pressure during work so that be System pressure is established to load pressure, and speed governing effect is good, while can complete pressure release by compensator after the completion of work, can also Pressure release is carried out by the valve rod on valve body, serves good effect for lifting composite move and the switching of single double pump, this practicality is new The feedback hydraulic fluid port of compensator is connected in different valve groups in type, during composite move, feedback pressure caused by the big one end of load pressure Power oil turns down the opening of other compensators, so that pressure oil is more assigned to the larger one end of load in the unit interval, it is real Existing pressure compensation, properties of product are stable, safe, and the setting of return check valve is too fast when to prevent oil return, avoids Car body is shaken.The utility model also has simple in construction, is swift in motion, regulation is reliable, easy to process, and service life length etc. is excellent Point.

Brief description of the drawings

Accompanying drawing 1 is the structural representation of the utility model embodiment.

Accompanying drawing 2 is the left view structural representation of accompanying drawing 1.

Accompanying drawing 3 is the half section structure diagram at valve seat 2 in the utility model embodiment.

Accompanying drawing 4 is the structural representation at the oil return opening 11 of valve body 1 in the utility model embodiment.

In figure, 1, valve body；11st, oil return opening；2nd, valve group；3rd, valve rod；4th, compensator；41st, screw plug；42nd, compensating spool；43、 Counterbalance spring；44th, feedback cavity；45th, intercommunicating pore；46th, pressure chamber；47th, hydraulic fluid port is fed back；5th, return check valve；51st, block piece；52、 Oil return valve element；53rd, sealing；6th, overflow valve.

Embodiment

The utility model embodiment is described further below in conjunction with the accompanying drawings：

As shown in Fig. 1 combinations Fig. 2,3,4, a kind of guide's integrated multipath valve, including valve body 1, it is provided with described valve body 1 Multiple valve groups 2, valve rod 3 are equipped with each valve group 2, each valve group 2 is correspondingly arranged on a compensator 4, the compensator 4 Oil inlet is connected with the pressure oil circuit of valve group 2 and its oil-out is connected with actuator port, feedback oil and the compensation of actuator port The feedback hydraulic fluid port 47 of device 4 is connected, and the different compensators 4 in different valve groups 2 feed back hydraulic fluid port 47 and are interconnected, described valve body 1 Oil return opening 11 is provided with, return check valve 5 is provided with described oil return opening 11.The utility model is opened big by compensator It is small, oil pressure can be quickly established during work so that system pressure is established to load pressure, and speed governing effect is good, while is completed in work After pressure release can be completed by compensator, pressure release can also be carried out by valve rod on valve body, for lifting composite move and Dan Shuan Pump switching serves good effect, and the feedback hydraulic fluid port of compensator is connected in different valve groups in the utility model, composite move When, feedback pressure oil caused by the big one end of load pressure turns down the opening of other compensators, so that unit interval internal pressure More be assigned to of power oil loads larger one end, realizes compensation function, properties of product are stable, safe, return check valve Set too fast when to prevent oil return, avoid car body from shaking.The utility model also have it is simple in construction, be swift in motion, regulation can Lean on, easy to process, the advantages that service life is long.In the utility model, valve rod generally has four, corresponds to the master of crane respectively Volume, secondary volume, luffing, stretch.

It is correspondingly arranged on overflow valve 6 in each described valve group 2, a pair of described valve rod 3, overflow valve 6 and compensator 4 one It should set.Such structure make it that each valve group security performance is high, and product stability is good.

Valve rod 3 in different valve groups 2 is set with the layering of overflow valve 6.Specifically, described valve body 1 is using casting integrated Shaping.Such structure make it that product structure is simple, easy to process, rationally distributed, is easy to pipeline connection so that system can be quick Response, while it is easy to staff to overhaul.

Described compensator 4 includes screw plug 41 and compensating spool 42, is provided between described screw plug 41 and compensating spool 42 Counterbalance spring 43, described counterbalance spring 43 have movement tendency of the driving compensating spool 42 close to valve rod 3.Specifically, institute Feedback cavity 44 is formed between the screw plug 41 and compensating spool 42 stated.In particular, it is communicated with described compensating spool 42 Hole 45, described intercommunicating pore 45 are connected with the pressure oil circuit of valve group 2, and described intercommunicating pore 45 is engaged shape with the inwall of valve body 1 Into pressure chamber 46.The setting of feedback cavity and pressure chamber, the pressure at compensating spool both ends can be compared, so that load Feedback pressure oil caused by the big one end of pressure turns down the opening of other compensators, so that pressure oil is more in the unit interval It is assigned to and loads larger one end, realizes compensation function, properties of product are stable, safe.

Described return check valve 5 includes block piece 51 and oil return valve element 52, described block piece 51 and oil return valve element 52 In valve body 1, the binding face of described oil return valve element 52 and the inwall of valve body 1 is the conical surface.Specifically, described oil return valve Core 52 is provided with sealing 53, and described sealing 53 is in inverted Y-shaped, and the outer surface of sealing 53 is arc surface.Return The setting of oily check valve is too fast when to prevent oil return, avoids car body from shaking.Sealing surface is the conical surface so that return check valve seals Reliably.

Every technical staff's notice：Although the utility model describes according to above-mentioned embodiment, this The invention thought of utility model is not limited to that utility model, any repacking with inventive concept, will all include this specially In sharp scope of patent protection.

Claims (9)

1. a kind of guide's integrated multipath valve, including valve body（1）, it is characterised in that:Described valve body（1）On be provided with multiple valve groups （2）, each valve group（2）On be equipped with valve rod（3）, each valve group（2）It is correspondingly arranged on a compensator（4）, the compensator （4）Oil inlet and valve group（2）Pressure oil circuit be connected and its oil-out is connected with actuator port, the feedback of actuator port is oily With compensator（4）Feedback hydraulic fluid port（47）It is connected, different valve groups（2）On different compensators（4）Feed back hydraulic fluid port（47）Mutually Connection, described valve body（1）It is provided with oil return opening（11）, described oil return opening（11）Inside it is provided with return check valve（5）.

2. guide's integrated multipath valve according to claim 1, it is characterised in that each described valve group（2）On be correspondingly arranged There is overflow valve（6）, described valve rod（3）, overflow valve（6）And compensator（4）Correspond and set.

3. guide's integrated multipath valve according to claim 2, it is characterised in that different valve groups（2）On valve rod（3）With overflowing Flow valve（6）Layering is set.

4. guide's integrated multipath valve according to claim 1, it is characterised in that described valve body（1）Using it is casting integrated into Type.

5. guide's integrated multipath valve according to claim 1, it is characterised in that described compensator（4）Including screw plug（41） And compensating spool（42）, described screw plug（41）And compensating spool（42）Between be provided with counterbalance spring（43）, described compensation bullet Spring（43）With driving compensating spool（42）Close to valve rod（3）Movement tendency.

6. guide's integrated multipath valve according to claim 5, it is characterised in that described screw plug（41）And compensating spool （42）Between form feedback cavity（44）.

7. guide's integrated multipath valve according to claim 5, it is characterised in that described compensating spool（42）The company of being provided with Through hole（45）, described intercommunicating pore（45）With valve group（2）Pressure oil circuit be connected, described intercommunicating pore（45）With valve body（1） Inwall is engaged to form pressure chamber（46）.

8. guide's integrated multipath valve according to claim 1, it is characterised in that described return check valve（5）Including stopping Part（51）With oil return valve element（52）, described block piece（51）With oil return valve element（52）It is located at valve body（1）Interior, described oil return Valve element（52）With valve body（1）The binding face of inwall is the conical surface.

9. guide's integrated multipath valve according to claim 8, it is characterised in that described oil return valve element（52）It is provided with close Envelope portion（53）, described sealing（53）In inverted Y-shaped, and sealing（53）Outer surface be arc surface.