CN208503133U - Hydraulic pilot valve - Google Patents

Abstract

The utility model provides a kind of hydraulic pilot valve, including handle, connector, boss wheel, universal shaft, multiple hydraulic stems, guide valve blocks, and clamping plate, described connector one end connects the handle, one end of the universal shaft connects the other end of the connector and the boss wheel is fixed between the universal shaft and the connector, the other end of the universal shaft is connected on the guide valve blocks, the multiple hydraulic stem is respectively placed in the pilot hole of the guide valve blocks, each hydraulic stem is connected with reset spring, each hydraulic stem includes tappet part and rod set, the rod set is placed on outside the tappet part, the rod set is externally provided with radial stop collar, the clamping plate is fixed on the guide valve blocks, the clamping plate is equipped with to be led to for the end stretching of the tappet part and the first of the round cam contact Hole, the first through hole limit the rod set and stretch out the pilot hole.The utility model is not only easy to control, but also using reliable.

Description

Hydraulic pilot valve

Technical field

The utility model relates to a kind of mechanical pilot valve more particularly to a kind of hydraulic pilot valves.

Background technique

This part intends to provides for the utility model embodiment stated in claim and its in specific embodiment Background or context, the content of description herein recognize it is the prior art not because not being included in this part.

Pilot valve is widely used in Hydraulic Field.But current pilot valve controls inconvenient, when use, is unreliable.

Utility model content

In consideration of it, it is necessary to provide a kind of hydraulic pilot valve, it is not only easy to control, but also using reliable.

The utility model provides a kind of hydraulic pilot valve, including handle, connector, boss wheel, universal shaft, multiple hydraulic Bar, guide valve blocks and clamping plate, described connector one end connect the handle, and one end of the universal shaft connects the company The boss wheel is simultaneously fixed between the universal shaft and the connector by the other end of fitting, the universal shaft it is another End is connected on the guide valve blocks, and the multiple hydraulic stem is respectively placed in the pilot hole of the guide valve blocks, each described Hydraulic stem is connected with reset spring, and each hydraulic stem includes tappet part and rod set, and the rod set is placed on the tappet part Outside, the rod set is externally provided with radial stop collar, and the clamping plate is fixed on the guide valve blocks, and the clamping plate is equipped with The first through hole with the round cam contact is stretched out for the end of the tappet part, the first through hole limits the rod set and stretches out The pilot hole.

Further, the rod set is fixed in the pilot hole, and the rod set is externally provided with the first sealing ring.

Further, the tappet part includes hydraulic tappet and piston, and the piston is set in the rod set, described hydraulic Tappet is connect with the piston, the head end of the piston and the round cam contact, is equipped with the second sealing ring, institute in the rod set The second sealing ring is stated to contact with the side wall of the piston.

Further, the hydraulic stem further includes spring mountings, and the spring mountings are set to the close of the rod set One end of the hydraulic tappet, the hydraulic tappet pass through the spring mountings and connect with the piston, and the piston supports The spring mountings, one end of the reset spring connect the spring mountings and are sheathed on outside the hydraulic tappet, institute The other end for stating reset spring supports in the pilot hole.

Further, it is equipped with third sealing ring at the spring mountings and the rod set contact position, the third is close Seal is contacted with the side wall of the piston.

Further, the spring mountings are equipped with groove close to one end of the rod set, the piston close to described One end of hydraulic tappet is set in the groove, and one end close to the hydraulic tappet of the piston is equipped with avoiding hollow groove, described The end of hydraulic tappet is set in the avoiding hollow groove.

It further, further include fixed plate, the fixed plate is fixed on the guide valve blocks, and the fixed plate is equipped with The second through-hole with the round cam contact is stretched out for the end of the tappet part, the fixed plate is used for the hydraulic pilot Valve is fixed on other mechanically.

Further, several notches are offered on the fixed plate and the corresponding position of the clamping plate, it is described Several notches are used to the hydraulic pilot valve being clamped on other mechanically.

Further, the end of the tappet part and the round cam contact is arc-shaped.

It further, further include dust cover, the dust cover at least covers on the connector, the boss wheel, described ten thousand To outside axis.

Compared to the prior art, the utility model has the beneficial effects that the utility model during installation, by clamping plate by bar Set is limited in guide valve blocks, and rod set provides more structurally sound slide-and-guide for tappet part, hydraulic more stable, avoids tappet part Be detached from the contact of boss wheel, improve the use reliability of hydraulic pilot valve, in addition, pass through regulation handle, boss can be driven The inclination of wheel realizes different hydraulic adjustings so as to controlling to different hydraulic stems.

Detailed description of the invention

In order to illustrate more clearly of the utility model embodiment technical solution, will make below to required in embodiment description Attached drawing is briefly described, it should be appreciated that the accompanying drawings in the following description is some embodiments of the utility model, right For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings His attached drawing.

Fig. 1 is the decomposition diagram of the hydraulic pilot valve of the utility model.

Fig. 2 is the structural schematic diagram of a hydraulic stem.

Fig. 3 is the cross-sectional view of hydraulic stem.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment is obtained, the protection scope of the utility model is belonged to.It is understood that attached drawing is provided solely for referring to With illustrate to use, not be used to the utility model is limited.The connection relationship shown in attached drawing is intended merely to facilitate clearly Description, does not limit connection type.

It should be noted that it can be directly to when a component is considered as " connection " another component Another component, or may be simultaneously present component placed in the middle.Unless otherwise defined, all technology and science used herein Term has the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs.It should also be noted that, removing Non- separately to have specific regulation and limit, term " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be fixed connect It connects, may be a detachable connection, or be integrally connected；It can be mechanical connection, be also possible to be electrically connected, can be two members Connection inside part.For the ordinary skill in the art, it can understand that above-mentioned term is practical new at this with concrete condition Concrete meaning in type.Terminology used in the description of the utility model herein is intended merely to describe specifically to implement The purpose of example, it is not intended that in limitation the utility model.

It should also be noted that, the utility model description in, it should be noted that term " center ", "upper", "lower", The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "inner", "outside" be orientation based on the figure or Positional relationship is merely for convenience of describing the present invention and simplifying the description, rather than the device or member of indication or suggestion meaning Part must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention. In addition, term " first ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.

Please refer to Fig. 1.The utility model provides a kind of hydraulic pilot valve 100, including handle 1, connector 2, boss wheel 3, Universal shaft 4, multiple hydraulic stems 5, guide valve blocks 6 and clamping plate 7, described 2 one end of connector can pass through a spring catch 21 The handle 1 is connected, one end of the universal shaft 4 connects the other end of the connector 2 and the boss wheel 3 is fixed on institute It states between universal shaft 4 and the connector 2, the other end of the universal shaft 4 is connected on the guide valve blocks 6, Ke Yi The both ends of the universal shaft 4 are respectively set screw thread, the both ends of universal shaft 4 be threadedly attached in respectively the connector 2 and On the guide valve blocks 6.

Wherein, the multiple hydraulic stem 5 is respectively placed in the pilot hole 61 of the guide valve blocks 6, in the present embodiment, The universal shaft 4 is attached to the medium position of guide valve blocks 6, and the quantity of the hydraulic stem 5 can be 4, is uniformly arranged on guide In valve body 6, positioned at the lower surrounding of the universal shaft 4, each hydraulic stem 5 is connected with reset spring 50, and reset spring 50 is used In by the reset of hydraulic stem 5.

As shown in Fig. 2, each hydraulic stem 5 includes tappet part 51 and rod set 52, rod set 52 is sheathed on the tappet Outside part 51, tappet part 51 can be slided relative to rod set 52, and the rod set 52 is equipped with radial stop collar 521, the clamping plate 7 It is fixed on the guide valve blocks 6, the clamping plate 7 is equipped with end stretching and the boss wheel 3 for the tappet part 51 The first through hole 71 of contact, the first through hole 71 limits the stop collar 521 and stretches out the pilot hole 61, to limit institute It states rod set 52 and stretches out the pilot hole 61.

In the present embodiment, the end that the tappet part 51 is contacted with the boss wheel 3 is arc-shaped 53, is convenient for boss The sliding contact of wheel 3 and 51 end of tappet part is convenient to boss wheel 3 and pushes tappet part 51.

Rod set 52 is limited in guide valve blocks 6 by clamping plate 7, rod set 52 is that tappet part 51 provides more structurally sound cunning Action-oriented, it is hydraulic more stable, the disengaging of tappet part 51 and the contact of boss wheel 3 are avoided, the use for improving hydraulic pilot valve 100 can By property, in addition, by regulation handle 1 inclination of boss wheel 3 can be driven, so as to difference under the action of universal shaft 4 Hydraulic stem 5 control, realize different hydraulic adjustings.

As shown in Fig. 2, the rod set 52 is externally provided with the first sealing ring 522, the rod set 52 can also pass through the stop collar 521 and be fixed in the pilot hole 61, pass through the contact of rod set 52 and the first sealing ring 522 and pilot hole 61, Neng Gouti High leakproofness, when regulation handle 1 so that boss wheel 3 pushes tappet part 51, it can be ensured that hydraulic size.

As shown in Figures 2 and 3, the tappet part 51 includes hydraulic tappet 511 and piston 512, and the piston 512 is set to institute It states in rod set 52, the hydraulic tappet 511 is connect with the piston 512, and the head end of the piston 512 connects with the boss wheel 3 Touching, end are arc-shaped 53, and the second sealing ring 523, second sealing ring 523 and the piston are equipped in the rod set 52 512 side wall contact, can be avoided gap of the dust between rod set 52 and piston 512 and enters in rod set 52, influence piston 512 with the sliding reliability of rod set 52.

The hydraulic stem 5 further includes spring mountings 513, and the spring mountings 513 are set to the close of the rod set 52 One end of the hydraulic tappet 511, the hydraulic tappet 511 pass through the spring mountings 513 and connect with the piston 512, The piston 512 supports the spring mountings 513, wherein the lower end of the spring mountings 513 is equipped with spring positioning slot 5131, one end of the reset spring 50 connects the spring mountings 513 and is sheathed on outside the hydraulic tappet 511, specifically It may be provided in the spring positioning slot 5131, the other end of the reset spring 5 supports in the pilot hole 61.

When boss wheel 3 push piston 512 when, piston 512 can squeeze the reset spring 50 and drive it is described it is hydraulic very Bar 511 moves, and after the external force of control handle 1 is eliminated, reset spring 50 is returned to piston 512 and hydraulic tappet 511 just Beginning position.

The spring mountings 513 are sealed with third sealing ring 514, the third is equipped at 52 contact position of rod set Circle 514 is contacted with the side wall of the piston 512, between the salable spring mountings 513 of third sealing ring 514 and the rod set 52 Gap and piston 512 and rod set 52 between gap.

The spring mountings 513 close to one end of the rod set 52 be equipped with groove 5132, the piston 512 it is close One end of the hydraulic tappet 511 is set in the groove 5132, and the one of the close hydraulic tappet 511 of the piston 512 End is equipped with avoiding hollow groove 5121, and the end of the hydraulic tappet 511 is set in the avoiding hollow groove 5121, and groove 5132 can be with piston 512 cooperations, avoiding hollow groove 5121 can cooperate with hydraulic tappet 511, improve reliability when sliding, and avoiding hollow groove 5121 can Movement cushion space is provided for hydraulic tappet 511.

It, can be at the end close to the piston 512 of the hydraulic tappet 511 for convenience in the limit of hydraulic tappet 511 Portion is arranged a limited block 5111, the diameter of the limited block 511 be greater than on the spring mountings 513 for described hydraulic The diameter for the through-hole that tappet 511 passes through, limited block 5111 is limited to be detached from from the bottom surface of the groove 5132, can avoid institute It states hydraulic tappet 511 and is detached from the spring mountings 513.

For convenience in the installation of installation hydraulic tappet 511, the diameter of the limited block 5111 is solid no more than the spring Determine the diameter of the through-hole passed through for the hydraulic tappet 511 on part 513, such as can open up and limit in the groove 5132 The limited block 5111 of the sizable through-hole of block 5111,511 end of hydraulic tappet passes through the through-hole, then in hydraulic tappet 511 One card 515 of upper setting, the card 515 can be U-shaped card, and card 515 is sheathed on hydraulic tappet 511 and is located at the limit Between position block 5111 and 5132 bottom surface of groove, card 515 limits limited block 5111 and is pierced by and makes hydraulic from the bottom surface of groove 5132 Tappet 511 is detached from the spring mountings 513.

The hydraulic pilot valve 100 further includes fixed plate 8, and the fixed plate 8 is fixed on the guide valve blocks 6, described Fixed plate 8 is equipped with the second through-hole 81 contacted for the end stretching of the piston 512 with the boss wheel 3, the fixed plate 8 It for the hydraulic pilot valve 100 to be fixed on other mechanically, such as can be fixed in Manipulation of the machine, be convenient to hydraulic elder generation Pilot valve 100 is mounted on other mechanically.

Wherein, several notches 9 are offered on the fixed plate 8 and the corresponding position of the clamping plate 7, if described Dry notch 9 is used to the hydraulic pilot valve 100 being clamped on other mechanically, during installation, can be first mechanical by other Fixed position is caught in notch 9, is then screwed fixed plate 8 again, is installed more convenient.

The hydraulic pilot valve 100 further includes dust cover 10, and 10 upper end of dust cover connects handle 1, and lower end connects pilot valve Body 6, the dust cover 10 at least cover on the connector 2, the boss wheel 3, outside the universal shaft 4, can prevent dust or Spot enters in guide valve blocks 6.

In the description and claims of this application, word "comprises/comprising" and word " have/including " and its become Shape, for the presence of specified stated feature, numerical value, step or component, but do not preclude the presence or addition of it is one or more its His feature, numerical value, step, component or their combination.

Some features of the utility model, it is clear to illustrate, it describes in various embodiments respectively, however, these are special Sign, which can also be incorporated into single embodiment, to be described.On the contrary, some features of the utility model, for simplicity, only single It is described in embodiment, however, these features can also be independent or be described in different embodiments in any suitable combination.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Made any modifications, equivalent replacements, and improvements etc., should all be included in the utility model within the spirit and principle of utility model Protection scope within.

Claims (10)

1. a kind of hydraulic pilot valve, which is characterized in that including handle, connector, boss wheel, universal shaft, multiple hydraulic stems, guide Valve body and clamping plate, described connector one end connect the handle, and one end of the universal shaft connects the another of the connector The boss wheel is simultaneously fixed between the universal shaft and the connector by one end, and the other end of the universal shaft is connected to On the guide valve blocks, the multiple hydraulic stem is respectively placed in the pilot hole of the guide valve blocks, and each hydraulic stem connects It is connected to reset spring, each hydraulic stem includes tappet part and rod set, and the rod set is placed on outside the tappet part, the bar Set is externally provided with radial stop collar, and the clamping plate is fixed on the guide valve blocks, and the clamping plate is equipped with to be endured for described The first through hole with the round cam contact is stretched out in the end of rod piece, and the first through hole limits the rod set and stretches out the guiding Hole.

2. hydraulic pilot valve according to claim 1, which is characterized in that the rod set is fixed in the pilot hole, institute It states rod set and is externally provided with the first sealing ring.

3. hydraulic pilot valve according to claim 1, which is characterized in that the tappet part includes hydraulic tappet and piston, The piston is set in the rod set, and the hydraulic tappet is connect with the piston, the head end of the piston and the boss wheel Contact, the rod set is interior to be equipped with the second sealing ring, and second sealing ring is contacted with the side wall of the piston.

4. hydraulic pilot valve according to claim 3, which is characterized in that the hydraulic stem further includes spring mountings, institute The one end close to the hydraulic tappet of spring mountings set on the rod set is stated, the hydraulic tappet passes through the spring and fixes Part is connect with the piston, and the piston supports the spring mountings, and it is solid that one end of the reset spring connects the spring Determine part and be sheathed on outside the hydraulic tappet, the other end of the reset spring supports in the pilot hole.

5. hydraulic pilot valve according to claim 4, which is characterized in that the spring mountings and the rod set contact position It sets place and is equipped with third sealing ring, the third sealing ring is contacted with the side wall of the piston.

6. hydraulic pilot valve according to claim 4, which is characterized in that the spring mountings close to the rod set one End is equipped with groove, and one end close to the hydraulic tappet of the piston is set in the groove, the piston close to described One end of hydraulic tappet is equipped with avoiding hollow groove, and the end of the hydraulic tappet is set in the avoiding hollow groove.

7. hydraulic pilot valve according to claim 1-6, which is characterized in that it further include fixed plate, the fixation Plate is fixed on the guide valve blocks, and the fixed plate is equipped with end stretching and the round cam contact for the tappet part The second through-hole, the fixed plate is used to the hydraulic pilot valve being fixed on other mechanically.

8. hydraulic pilot valve according to claim 7, which is characterized in that the fixed plate and the clamping plate are corresponding Position on offer several notches, several described notches are used to the hydraulic pilot valve being clamped on other mechanically.

9. hydraulic pilot valve according to claim 1-6, which is characterized in that the tappet part and the boss wheel The end of contact is arc-shaped.

10. hydraulic pilot valve according to claim 1-6, which is characterized in that it further include dust cover, it is described dust-proof Cover at least covers on the connector, the boss wheel, outside the universal shaft.