CN206093078U - A check valve structure for connecting hydraulic retarber - Google Patents

Abstract

The utility model relates to a machine design makes the field, discloses a check valve structure for connecting hydraulic retarber, included the disk seat, case, spring guide the body and sealing member, through the configuration optimization of part, and case response hydraulic oil pressure variation, the drive spring is worked as the pressure differential and is made the check valve open enough guiding internal flexible removal the back and forth, and the rethread oil feed is said and is flowed in the working chamber behind the medium oil entering heat exchanger of the check valve of flowing through, through the check valve structure of rational design, disk seat threaded connection department is from the sealed recess in area, seals the screw thread, prevents that hydraulic oil from reserving through screw thread department, and the guide body adopts high frequency quenching process to handle, and hardness is high, and is wear -resisting.

Description

A kind of one-way valve structures for Retarder in parallel

Technical field

This utility model is related to Machine Design manufacture field, and particularly a kind of check valve for Retarder in parallel is tied Structure.

Background technology

For the downhill retardation of heavy truck, slowed down usually through automobile braking safety auxiliary device, the device Core component is hydraulic buffer, reduces can vehicle spindle speed by the hydraulic buffer, so as to reach downhill retardation Purpose.

At present, the hydraulic buffer mainly include grease chamber housing, respectively loaded on grease chamber housing both ends of the surface heat exchanger and Work cavity shell, wherein the cavity shell that works is provided with fuel feed hole, is equipped with line check valve in the fuel feed hole, the check valve is entering The circulation or cut-off of oil mass are capable of achieving in the presence of oil pressure.Wherein in fuel feed hole of the in line check valve loaded on work cavity shell Afterwards, in line check valve is close to fuel feed hole inwall, and oil mass cannot be lubricated in line check valve, and with use time Extend, because of the lubrication for not having lubricating oil, surface is likely to get rusty in line check valve, so as to affect making in line check valve Use effect.

The content of the invention

The purpose of this utility model is to provide a kind of one-way valve structures for Retarder in parallel, by entering oil pressure Power can be precisely controlled oil mass circulation and cut-off.

To realize above-mentioned technical purpose, above-mentioned technique effect is reached, the utility model discloses a kind of for fluid power in parallel The one-way valve structures of retarder, include valve seat, valve element, spring, guide body and sealing member, and valve seat is tied for step hex nut Structure, offers circular hole and sealed groove on valve seat, guide body is column type cylinder, and centre offers manhole, is installed on valve seat Circular hole in, sealing member is installed in the sealed groove of valve seat, and spring is nested with the outside of valve element, is installed on guiding internal.

Wherein, valve seat includes nut step and nut ring for step hex nut structure, and nut ring is arranged at nut platform On rank, connection is provided with sealed groove, and circular hole is offered in the middle part of nut ring, opens up fluted on the outside of circular hole.

Wherein, valve element includes one-level seat, two grades of seats and cylindrical bar, and is mutually combined to form two rank boss, spring one end It is nested on the outside of two grades of seats, one end is nested on the outside of the circular hole of valve seat nut ring in groove.

Wherein, guide body external diameter is identical with valve seat Circularhole diameter, and guide body internal diameter is identical with the cylinder shank diameter of valve element, draws Conductor is through quenching technology process.

This utility model has the advantages that：

1. structure optimization of this utility model by part, senses hydraulic fluid pressure change by valve element, drives spring to exist Guiding telescopic moving back and forth in vivo, when pressure differential opens check valve enough, flow through check valve Medium Oil enter heat exchanger after Working chamber is flowed into by oil input channel again.

2., through the one-way valve structures of appropriate design, valve seat threaded connection place carries sealed groove, screw thread is sealed, Hydraulic oil is prevented by reserving at screw thread, guide body adopts high-frequency quenching, hardness is high, wear-resisting.

Description of the drawings

Fig. 1 is structural representation of the present utility model.

Primary clustering symbol description:

1：Nut step, 2：Nut ring, 3：Sealed groove, 4：Circular hole, 5：Groove, 6：One-level seat, 7：Two grades of seats, 8：Cylinder Bar, 9：Spring, 10：Guide body, 11：Sealing member.

Specific embodiment

In order that the purpose of this utility model, technical scheme and advantage become more apparent, below in conjunction with accompanying drawing and enforcement Example, is further elaborated to this utility model.

As shown in figure 1, the utility model discloses a kind of one-way valve structures for Retarder in parallel, include valve Seat, valve element, spring 9, guide body 10 and sealing member 11, valve seat are step hex nut structure, and sealed groove 3 is offered on valve seat With circular hole 4, guide body 10 is column type cylinder, and centre offers manhole, be installed in the circular hole 4 of valve seat, and sealing member 11 is pacified In sealed groove 3 loaded on valve seat, spring 9 on the outside of valve element, is nested with, is installed in guide body 10.

Valve seat includes nut step 1 and nut ring 2 for step hex nut structure, and nut ring 2 is arranged at nut step 1 On, connection is provided with sealed groove 3, offers circular hole 4, fluted 5 are opened up on the outside of circular hole 4 in the middle part of nut ring 2.

Valve element includes 6, two grades of seats 7 of one-level seat and cylindrical bar 8, and is mutually combined to form two rank boss, and 9 one end of spring is embedding It is placed on the outside of two grades of seats 7, one end is nested in the groove 5 of valve seat nut ring 2.10 external diameter of guide body and 4 diameter phase of valve seat circular hole Together, 10 internal diameter of guide body is identical with 8 diameter of cylindrical bar of valve element, and guide body 10 is through quenching technology process.

Operation principle：

In the application one-way valve structures, valve seat carries hex-head nut, and in installation, it is also possible to position whole check valve knot Structure, valve seat threaded connection place are provided with sealed groove 3, and screw thread is sealed, and prevent hydraulic oil by reserving at screw thread, valve body Centre is provided with circular hole 4 for positioning valve element and spring 9, loads a guide body 10 in circular hole 4, and guide body 10 is quenched using high frequency Fire, hardness are high, wear-resisting, and check valve moves back and forth in guide body 10 with the reduction of spring 9, when retarder is started working moment, Closed check valve, its purpose closed are the work intracavity for preventing hydraulic oil from being formed from trapped fuel room by rotor and stator Oil road enters working chamber, because the work intracavity formed in the moment rotor started working and stator does not also form hydraulic pressure Oil pressure is poor, if hydraulic oil enters rotor from the oil road that trapped fuel room passes through the work intracavity formed with stator by rotor and determines The work intracavity formed by son cannot produce pressure differential, so as to be that retarder Medium Oil produces circulation, so now single Need to close to valve, after closed check valve, retarder medium enters stator oil input channel through grease chamber housing oil input channel by trapped fuel room Work intracavity that rotor and stator formed is entered back into afterwards so as to produce pressure differential, and pressure differential is opened check valve enough, flows through list Enter after heat exchanger again by oil input channel inflow work to the Medium Oil of valve, material is thus formed an one-way hydraulic line of oils and close Circulation, so as to being that constantly work makes automobile constantly slow down or constant speed to retarder.

The above, only this utility model preferably specific embodiment, but protection domain of the present utility model is not This is confined to, any those familiar with the art can be readily occurred in the technical scope that this utility model is disclosed Change or replacement, should all cover within protection domain of the present utility model.

Claims (4)

1. a kind of one-way valve structures for Retarder in parallel, it is characterised in that include valve seat, valve element, spring, guiding Body and sealing member, described valve seat is step hex nut structure, and circular hole and sealed groove, described guiding are offered on valve seat Body is column type cylinder, and centre offers manhole, be installed in the circular hole of valve seat, and described sealing member is installed on the close of valve seat In envelope groove, on the outside of described valve element, spring is nested with, is installed on guiding internal.

2. a kind of one-way valve structures for Retarder in parallel as claimed in claim 1, it is characterised in that：Described valve Seat includes nut step and nut ring for step hex nut structure, and described nut ring is arranged on nut step, is connected The place of connecing is provided with sealed groove, offers circular hole, open up fluted on the outside of circular hole in the middle part of described nut ring.

3. a kind of one-way valve structures for Retarder in parallel as claimed in claim 2, it is characterised in that：Described valve Core includes one-level seat, two grades of seats and cylindrical bar, and is mutually combined to form two rank boss, and described spring one end is nested in two grades Seat outside, one end is nested on the outside of the circular hole of valve seat nut ring in groove.

4. a kind of one-way valve structures for Retarder in parallel as claimed in claim 3, it is characterised in that：Described draws Conductor diameter is identical with valve seat Circularhole diameter, and guide body internal diameter is identical with the cylinder shank diameter of valve element, and described guide body is passed through Quenching technology process.