阅读说明：本技术 液压管件加工工具的泄压排气结构 (Pressure relief and exhaust structure of hydraulic pipe fitting machining tool ) 是由 蒋友荣 于 2021-07-26 设计创作，主要内容包括：本发明公开了一种液压管件加工工具,提供了一种结构简单,集手动泄压和手动排气加油功能于一体,从而实现快速泄压和排气加油的液压管件加工工具的泄压排气结构,解决了现有技术中存在的液压管件加工工具往往只具备单一的手动泄压功能,且手动泄压结构较为复杂,使用安全可靠性差等技术问题,它包括本体及设于本体上的泄压阀,泄压阀外的本体上罩装有贮油环,所述泄压阀阀芯的外侧端连接着弹性拨叉的一端,弹性拨叉的另一端向外延伸至贮油环的上方,轴向拉动弹性拨叉时,弹性拨叉带动阀芯向外滑动,径向按压贮油环上方的弹性拨叉端部时,弹性拨叉挤压贮油环向内凹陷。(The invention discloses a hydraulic pipe fitting machining tool, provides a tool which has a simple structure, integrates the functions of manual pressure relief and manual exhaust and oil filling, thereby realizing the pressure relief and exhaust structure of the hydraulic pipe processing tool for quickly relieving pressure, exhausting and oiling, solving the problem that the hydraulic pipe processing tool in the prior art only has a single manual pressure relief function, and the manual pressure relief structure is more complex, the use safety and reliability are poor, and the like, the manual pressure relief structure comprises a body and a pressure relief valve arranged on the body, an oil storage ring is covered on the body outside the pressure relief valve, the outer side end of the valve core of the pressure relief valve is connected with one end of an elastic shifting fork, the other end of the elastic shifting fork extends outwards to the upper part of the oil storage ring, when the elastic shifting fork is pulled axially, the elastic shifting fork drives the valve core to slide outwards, and when the end part of the elastic shifting fork above the oil storage ring is radially pressed, the elastic shifting fork extrudes the oil storage ring to inwards sink.)

1. The utility model provides a pressure release exhaust structure of hydraulic pipe fitting machining tool, includes body (1) and locates relief valve (2) on body (1), body (1) upper shield outside relief valve (2) is equipped with oil storage ring (3), its characterized in that: the outside end of the valve core (21) of the pressure relief valve (2) is connected with one end of an elastic shifting fork (4), the other end of the elastic shifting fork (4) extends outwards to the upper part of the oil storage ring (3), when the elastic shifting fork (4) is pulled axially, the elastic shifting fork (4) drives the valve core (21) to slide outwards, and when the end part of the elastic shifting fork (4) above the oil storage ring (3) is pressed radially, the elastic shifting fork (4) extrudes the oil storage ring (3) to be inwards sunken.

2. The pressure relief and exhaust structure of a hydraulic pipe machining tool according to claim 1, characterized in that: a shifting fork fulcrum (5) capable of supporting an elastic shifting fork (4) is arranged on a body (1) close to the valve core (21), and when the elastic shifting fork (4) outside the shifting fork fulcrum (5) is pushed axially, the elastic shifting fork (4) drives the valve core (21) to slide outwards.

3. The pressure relief and exhaust structure of a hydraulic pipe machining tool according to claim 1, characterized in that: the elastic shifting fork (4) is L-shaped, the end part of the elastic shifting fork (4) corresponding to the oil storage ring (3) is axially and slidably connected with one end of the limiting plate (7), and the other end of the limiting plate (7) is movably connected to the corresponding body (1).

4. The pressure relief and exhaust structure of a hydraulic pipe machining tool according to claim 1, characterized in that: the middle part of the elastic shifting fork (4) corresponding to the button (6) extends towards the direction of the valve core (21) to form an arc-shaped bulge (41), and the arc-shaped bulge (41) is close to the L-shaped elastic shifting fork (4) to rotate.

5. The pressure relief and exhaust structure of a hydraulic pipe machining tool according to claim 1, characterized in that: the outer end of the button (6) extends towards the oil storage ring (3) to form a U-shaped retaining ring (61), and the end of the limiting plate (7) is inserted in the U-shaped retaining ring (61) in a sliding mode.

6. The pressure relief and exhaust structure of a hydraulic pipe machining tool according to claim 5, characterized in that: the inner wall surface of the U-shaped retaining ring (61) corresponding to the outer side surface of the limiting plate (7) extends outwards to form an inclined surface (611), and when the elastic shifting fork (4) is pushed axially to the limit position, the outer side surface of the limiting plate (7) is flatly attached to the inclined surface (611).

7. The pressure relief and exhaust structure of a hydraulic pipe machining tool according to claim 5, characterized in that: the end part of the elastic shifting fork (4) corresponding to the valve core (21) is provided with a U-shaped notch groove (42), the valve core (21) corresponding to the U-shaped notch groove (42) extends inwards to form an annular limiting groove (211), and the U-shaped notch groove (42) is clamped in the annular limiting groove (211).

8. The pressure relief and exhaust structure of a hydraulic pipe machining tool according to claim 7, characterized in that: and a gap (8) is reserved between the inner side surface of the elastic shifting fork (4) and the inner annular wall surface of the annular limiting groove (211).

9. The pressure relief and exhaust structure of a hydraulic pipe machining tool according to claim 1, characterized in that: and a button (6) is arranged at the end part of the elastic shifting fork (4) corresponding to the upper part of the oil storage ring (3).

Technical Field

The invention relates to a hydraulic pipe fitting machining tool, in particular to a pressure relief and exhaust structure of a hydraulic pipe fitting machining tool, which is simple in structure, integrates the functions of manual pressure relief and manual exhaust and oiling and realizes quick pressure relief and exhaust and oiling.

Background

The hydraulic system among the current hydraulic pipe fitting machining tool generally comprises relevant spare parts such as plunger, relief valve, oil feed check valve, and relief valve wherein often has automatic pressure release and two kinds of functions of manual pressure release concurrently, and manual pressure release structure often only possesses single manual pressure release function among the prior art, and the structure is comparatively complicated, uses fail safe nature poor.

Disclosure of Invention

The invention mainly provides the pressure relief and exhaust structure of the hydraulic pipe fitting machining tool, which is simple in structure and integrates the functions of manual pressure relief and manual exhaust and oil filling, so that the rapid pressure relief and exhaust and oil filling are realized, and the technical problems that the hydraulic pipe fitting machining tool in the prior art is often only provided with a single manual pressure relief function, the manual pressure relief structure is complex, the use safety and reliability are poor and the like are solved.

The technical problem of the invention is mainly solved by the following technical scheme: the utility model provides a pressure release exhaust structure of hydraulic pipe fitting machining tool, includes the body and locates the relief valve on the body, and the outer body upper shield of relief valve is equipped with oil storage ring, the one end of elasticity shift fork is being connected to the outside end of relief valve case, and the other end of elasticity shift fork outwards extends to the top of oil storage ring, and during axial pulling elasticity shift fork, elasticity shift fork drove the case and outwards slided, and when radially pressing the elasticity shift fork tip of oil storage ring top, elasticity shift fork extrusion oil storage ring inwards caves in. The elastic shifting fork is arranged at the outer side end of the valve core of the pressure relief valve, the other end of the elastic shifting fork extends to the upper side of the oil storage ring, when manual pressure relief is needed, the elastic shifting fork only needs to be pulled outwards along the axial direction of the valve core, the elastic shifting fork drives the valve core to open the pressure relief valve outwards, when exhaust refueling is needed, the other end of the elastic shifting fork can be pressed inwards, the elastic shifting fork extrudes the oil storage ring to be sunken inwards, the exhaust refueling function is achieved, the elastic shifting fork is an elastic part, the elastic shifting fork automatically rebounds and resets after the exhaust refueling is finished, the structure is simple, the manual pressure relief and manual exhaust refueling functions are integrated, time and labor are saved, quick pressure relief and exhaust refueling are achieved, and the operation process is safe and reliable.

Preferably, a shifting fork fulcrum capable of supporting the elastic shifting fork is arranged on the body close to the valve core, and when the elastic shifting fork outside the shifting fork fulcrum is pushed axially, the elastic shifting fork drives the valve core to slide outwards. Through set up the shift fork fulcrum on the body that is close to case one end, only need when needing manual pressure release inwards promote the dynamic elasticity shift fork in the shift fork fulcrum outside along the case axial, the elasticity shift fork uses the shift fork fulcrum to drive the case outwards to open the relief valve promptly as the fulcrum, owing to only need make the toper valve post of case front end leave the valve port slightly and can realize the pressure release, consequently not only convenient operation, labour saving and time saving through the lever principle, and can make overall structure design compacter reasonable again.

Preferably, the elastic shifting fork is L-shaped, the end part of the elastic shifting fork corresponding to the oil storage ring is axially and slidably connected with one end of the limiting plate, and the other end of the limiting plate is movably connected to the corresponding body. The L-shaped elastic shifting fork formed by bending along the profile of the whole machine maximally reduces the external dimension of the elastic shifting fork, so that the structure of the whole machine is more compact; through set up the limiting plate at elasticity shift fork tip, the other end swing joint of limiting plate is on the body again, when needs exhaust and refuel the operation, demolish the limiting plate again, can avoid making its extrusion oil storage ring because of the mistake touches the elasticity shift fork at non-exhaust refueling period, improved the fail safe nature who uses.

Preferably, the middle part of the elastic shifting fork corresponding to the button extends towards the valve core to form an arc-shaped bulge, and the arc-shaped bulge is close to the L-shaped elastic shifting fork corner. The arc-shaped bulge can improve the elasticity and the strength of the elastic shifting fork.

Preferably, the outer end of the button extends towards the oil storage ring to form a U-shaped retaining ring, and the end of the limiting plate is inserted in the U-shaped retaining ring in a sliding mode. The U-shaped retaining ring is convenient to fix the limiting plate, and a boss is formed on the inner side of the elastic shifting fork, so that the extrusion operation is facilitated.

More preferably, the inner wall surface of the U-shaped baffle ring corresponding to the outer side surface of the limit plate extends outwards to form an inclined surface, and when the elastic shifting fork is pushed axially to the limit position, the outer side surface of the limit plate is flatly attached to the inclined surface. The formation of the inclined plane can avoid the interference between the limiting plate and the elastic shifting fork when pushing and releasing pressure, thereby increasing the operation resistance.

More preferably, the end of the elastic shifting fork corresponding to the valve core is provided with a U-shaped notch groove, the valve core corresponding to the U-shaped notch groove extends inwards to form an annular limiting groove, and the U-shaped notch groove is clamped in the annular limiting groove. The elastic shifting fork is clamped in the annular limiting groove on the valve core through the U-shaped notch groove, and the fixing mode is simple.

More preferably, a gap is formed between the inner side surface of the elastic shifting fork and the inner annular wall surface of the annular limiting groove. The clearance of the inner side surface of the elastic shifting fork can prevent the valve core from driving the elastic shifting fork to move outwards in the axial direction when the pressure is released.

Preferably, a button is provided at an end of the elastic fork corresponding to the upper side of the oil retainer. The button is arranged at the end part of the elastic shifting fork above the oil storage ring, so that the operation of exhausting and oiling is facilitated.

Therefore, the pressure relief and exhaust structure of the hydraulic pipe fitting machining tool has the following advantages: the elastic shifting fork is arranged at the outer side end of the valve core of the pressure relief valve, when manual pressure relief is needed, only the movable elastic shifting fork needs to be pulled outwards or pushed along the axial direction of the valve core, and when exhaust and refueling are needed, the other end of the elastic shifting fork is pressed inwards, so that the structure is simple, the manual pressure relief and manual exhaust and refueling functions are integrated, the operation is time-saving and labor-saving, the pressure relief and exhaust and refueling efficiency is high, and the process is safe and reliable; the exhaust oiling end of the elastic shifting fork is fixed on the body by arranging the limiting plate at the end part of the elastic shifting fork, the limiting plate is removed when the exhaust oiling is needed, the limiting plate can avoid mistakenly touching the elastic shifting fork in a non-exhaust oiling period to extrude an oil storage ring, and the use safety and reliability are improved.

Description of the drawings:

FIG. 1 is a cross-sectional view of a pressure relief vent structure of a hydraulic pipe machining tool of the present invention;

fig. 2 is an exploded view of the present invention.

The specific implementation mode is as follows:

the technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.

Example (b):

as shown in fig. 1 and 2, the pressure relief and exhaust structure of a hydraulic pipe fitting machining tool of the present invention includes a body 1 of the hydraulic pipe fitting machining tool and a pressure relief valve 2 installed on the body 1, an outer side end of a valve core 21 of the pressure relief valve 2 extends to the outside of the body 1, an oil storage ring 3 is covered on the body 1 at the outer side of the middle portion of the pressure relief valve 2, an end portion of the valve core 21 outside the body 1 extends inward to form an annular limiting groove 211, one end of an L-shaped elastic shifting fork 4 is slidably connected to the annular limiting groove 211, an end portion of the elastic shifting fork 4 corresponding to the bottom surface of the annular limiting groove 211 is provided with a U-shaped notch groove 42, the elastic shifting fork 4 is clamped in the annular limiting groove 211 in a mutual fit manner through the U-shaped notch groove 42, a gap 8 is formed between an inner side surface of the elastic shifting fork 4 and an inner annular wall surface of the corresponding annular limiting groove 211, the other end of the elastic shifting fork 4 is located above the oil storage ring 3, the body 1 close to the valve core 21 extends outward to form a fulcrum 5 capable of supporting the elastic shifting fork 4, the end part of the elastic shifting fork 4 corresponding to the oil storage ring 3 extends towards the oil storage ring 3 to form a U-shaped retaining ring 61, the extending direction of the opening of the U-shaped retaining ring 61 is parallel to the oil storage ring 3, one end of the limiting plate 7 is slidably inserted in the opening of the U-shaped retaining ring 61, the inner wall surface of the U-shaped retaining ring 61 corresponding to the outer side surface of the limiting plate 7 extends outwards to form an inclined surface 611, the other end of the limiting plate 7 is fixed on the corresponding body 1 through a screw, a button 6 is arranged at the end part of the elastic shifting fork 4 opposite to the U-shaped retaining ring 61, the inner end of the button 6 extends to the corner of the elastic shifting fork 4, the elastic shifting fork 4 corresponding to the button 6 extends towards the direction of the valve core 21 to form an arc-shaped bulge 41, and the arc-shaped bulge 41 is close to the corner of the L-shaped elastic shifting fork 4.

When manual pressure relief operation is carried out, the elastic shifting fork 4 close to the corner is pushed inwards along the axial direction, the elastic shifting fork 4 drives the valve core 21 to slide outwards, and when the elastic shifting fork 4 is pushed to the limit position along the axial direction, the outer side face of the limiting plate 7 is flatly attached to the inclined face 611.

When the air exhaust and oil filling operation is carried out, the button 6 is pressed inwards along the radial direction in a reciprocating mode, the elastic shifting fork 4 extrudes the oil storage ring 3 to be inwards sunken, and the elastic shifting fork 4 automatically resets after hands are released during pressing.

The specific embodiments described herein are merely illustrative of the principles of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.