CN215786256U

CN215786256U - Multifunctional electric hydraulic pipe fitting machining tool

Info

Publication number: CN215786256U
Application number: CN202121710994.8U
Authority: CN
Inventors: 蒋友荣
Original assignee: Zhejiang Value Mechanical & Electrical Products Co ltd
Current assignee: Zhejiang Value Mechanical & Electrical Products Co ltd
Priority date: 2021-07-26
Filing date: 2021-07-26
Publication date: 2022-02-11
Anticipated expiration: 2031-07-26

Abstract

The utility model discloses a pipe fitting processing tool, which provides a multifunctional electric hydraulic pipe fitting processing tool which can be used for processing various types of pipe fittings, has good universality, saves time and labor for processing, is convenient to carry and use, and solves the technical problems that the pipe fitting processing tool in the prior art has single function, high use cost, common manual operation, time and labor waste in the processing process, low processing efficiency, no guarantee on product quality and the like, the pipe fitting processing tool comprises a body, and a feeding mechanism, a hydraulic mechanism and a driving mechanism which are arranged on the body, wherein the driving motor on the driving mechanism is electrically connected with a battery pack, the driving mechanism pushes a conical head in the feeding mechanism to move outwards through the hydraulic mechanism and then is matched with a pipe fitting chuck, the hydraulic mechanism comprises a plunger cavity and a pressure relief cavity which are communicated with the rear end part of the conical head, the plunger cavity and the pressure relief cavity are communicated with an oil storage ring which is covered outside the body, the wall strength of the oil storage ring close to the inlet of the plunger cavity is increased.

Description

Multifunctional electric hydraulic pipe fitting machining tool

Technical Field

The utility model relates to a pipe fitting machining tool, in particular to a multifunctional electric hydraulic pipe fitting machining tool which can be used for machining various types of pipe fittings, has good universality, saves time and labor in machining, is convenient to carry and use, and simultaneously has an oil storage ring in the structure which deforms in sequence, so that the flow resistance of hydraulic oil is reduced, and the oil absorption efficiency is improved.

Background

The existing pipe fitting processing tool has only single function such as a pipe expander, a pipe press and the like, the pipe expander can only be used for pipe expanding processing of pipe fittings, the pipe press can only be used for pipe pressing processing of pipe fittings, therefore, in order to meet the use requirements, a user needs to be equipped with various appliances, the use cost is high, storage and transportation are not convenient, meanwhile, the pipe fitting processing tool generally adopts a manual structure, namely, manual force application is needed during pipe fitting processing, the processing process is time-consuming and labor-consuming, the processing efficiency is low, and the product quality cannot be guaranteed.

Disclosure of Invention

The utility model mainly provides the multifunctional electric hydraulic pipe fitting processing tool which can be used for processing various pipe fittings, has good universality, saves time and labor in processing, is convenient to carry and use, and solves the technical problems that the pipe fitting processing tool in the prior art has single function, high use cost, general manual operation, time and labor wasting in the processing process, low processing efficiency, no guarantee on product quality and the like.

Another object of the utility model is to: the multifunctional electric hydraulic pipe fitting machining tool solves the technical problems that the oil storage ring corresponding to an oil suction port in the prior art can be preferentially deformed to reduce the drift diameter of a flow channel at the position, the flowing resistance of hydraulic oil is increased, and the oil suction efficiency is influenced

The technical problem of the utility model is mainly solved by the following technical scheme: the utility model provides a multi-functional electronic hydraulic pressure pipe fitting machining tool, includes the body and locates feed mechanism, hydraulic pressure mechanism and the actuating mechanism on the body, the last driving motor electricity of actuating mechanism links to each other the battery package, and actuating mechanism is mutually joined in marriage with the pipe fitting chuck after outwards moving through the conical head among the hydraulic pressure mechanism promotion feed mechanism again, and hydraulic pressure mechanism wherein is including the plunger chamber and the pressure release chamber of intercommunication tip behind the conical head, and plunger chamber and pressure release chamber are communicating and are covering the oil storage ring of dress outside this body, are close to the increase of oil storage ring wall strength of plunger chamber import. The driving mechanism pushes the conical head in the feeding mechanism to move outwards through the hydraulic mechanism under the driving of electric power so as to process the pipe fitting, and compared with a traditional manual pipe fitting processing tool, the pipe fitting processing tool is time-saving and labor-saving, high in processing efficiency, integrated in structure and convenient to carry and use; by replacing the pipe fitting chucks of different types and the cone heads matched with the pipe fitting chucks, the processing of various types of pipe fittings such as pipe expansion, pipe expansion and pipe pressing can be met, multiple functions are integrated, and the universality is good; the oil storage ring is an elastic rubber part with the middle part protruding outwards, so that the storage capacity of hydraulic oil can be increased, and the oil storage ring can be conveniently extruded and refueled; by improving the wall strength of the oil storage ring corresponding to the inlet of the plunger cavity, if the modes of increasing the thickness of the local wall surface of the oil storage ring, additionally arranging reinforcing ribs on the local wall surface, additionally arranging supporting pieces inside and the like are adopted, when oil is absorbed, the part with high wall surface strength of the oil storage ring has strong deformation resistance, so that negative pressure formed during oil absorption can be overcome, the part cannot deform or has small deformation amount, and the part far away from the inlet of the plunger cavity is relatively small in strength and is relatively easy to deform, so that the oil storage ring corresponding to the inlet of the plunger cavity is orderly deformed from far to near, the inlet of the plunger cavity is always kept smooth, hydraulic oil smoothly flows in the oil storage ring, the flow resistance is small, the oil absorption power consumption is low, and the oil absorption efficiency is improved.

Preferably, the surface of the body in the oil storage ring extends downwards to form an annular oil storage groove, the annular oil storage groove is communicated with the oil filling port of the body through an oil filling channel, and the edge of the oil storage ring corresponding to the port in the oil filling channel extends downwards along the wall surface of the annular oil storage groove on the corresponding side to form an exhaust concave ring. When the hydraulic mechanism is leaked or the oil quality of the hydraulic oil changes and needs to be replaced, the oil filling port can be used for supplementing the hydraulic oil to the oil storage cavity through the oil filling port, or the deteriorated hydraulic oil is discharged out through the oil filling port and then new hydraulic oil is supplemented, when the oil is replaced, the oil filling port is opened downwards, the oil storage ring is pressed to discharge old hydraulic oil, when the hydraulic oil is supplemented, the oil filling port is upward, the elastic oil bottle is pressed inwards to ensure that the oil opening is downwards butted on the oil filling port, the oil storage ring is pressed downwards to discharge air into the oil bottle, the inwards concave part of the oil bottle is reset, air in a pipeline enters the bottom of the oil bottle, the oil bottle is squeezed, the hydraulic oil enters the oil storage cavity, wherein in the oil filling process, as the side edge of the oil storage ring corresponding to the inner port of the oil filling port extends downwards along the annular oil storage ring to form an exhaust concave ring, when the oil storage ring is pressed downwards, the exhaust concave ring close to the inner port of the oiling channel automatically clings to the wall surface of the annular oil storage groove, so that dead angles formed at the position can be eliminated, air in the dead angles can be eliminated, the generation of the exhaust dead angles is avoided, complete and thorough air exhaust is ensured, the performance of a pipe fitting machining tool is prevented from being influenced by the inclusion of air in a system, the structure is simple, the filling or the replacement of hydraulic oil is supplemented at any time according to the use requirement, and the normal use of the pipe fitting machining tool is ensured.

More preferably, an exhaust pressure plate capable of extruding the oil storage ring to deform inwards is arranged outside the oil storage ring corresponding to the inner port of the refueling passage, and when the exhaust pressure plate is pressed downwards, an air cavity formed at the top of the oil storage ring passes through the inner port of the refueling passage. According to the oil storage ring, the upper surface shape of the oil storage ring is kept consistent with the lower surface of the exhaust pressing plate when the oil storage ring is pressed downwards, and when the exhaust pressing plate is pressed downwards, the air cavity formed at the top of the oil storage ring passes through the exhaust port, so that the air in the air cavity can be completely discharged through the exhaust port, the air residue phenomenon cannot occur, the oil is filled in the exhaust process, the air cannot be mixed with the hydraulic system, and the use performance of a pipe fitting machining tool is ensured.

Preferably, the pressure release chamber is connected with a pressure release valve in a sliding manner, the outer side end of a valve core on the pressure release 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 elastic shifting fork above the oil storage ring is pressed radially, the elastic shifting fork extrudes the oil storage ring to be inwards concave. Through set up the elasticity shift fork at the outside end of relief valve case, the other end of elasticity shift fork extends to the top of oil storage ring again, only need outwards stimulate the elasticity shift fork along the case axial when needing manual pressure release, the elasticity shift fork drives the case and outwards opens the relief valve promptly, when needing the exhaust to refuel, can inwards press the other end of elasticity shift fork, the elasticity shift fork extrudees the oil storage ring promptly and inwards caves in, thereby realize that the exhaust refuels the function, because the elasticity shift fork is the elastic component, the automatic resilience of elasticity shift fork resets after the exhaust refuels, moreover, the steam generator is simple in structure, collect manual pressure release and manual exhaust refuels function in an organic whole, use labour saving and time saving, the quick pressure release and the exhaust of pipe fitting machining tool refuel, the operation process is safe and reliable.

Preferably, a pressure release valve is slidably connected in the pressure release cavity, the outer side end of a valve core on the pressure release valve is connected with the inner side end of a pressure release shifting fork, and the outer side end of the pressure release shifting fork is slidably connected to a shell outside the body. The pressure relief structure can be simplified, namely, the inner side end of the pressure relief shifting fork is connected with the outer side end of the valve core, the outer side end of the pressure relief shifting fork is connected to the shell outside the valve body in a sliding mode, manual pressure relief operation can be completed by sliding the pressure relief shifting fork outwards along the axial direction of the valve core during use, and the pressure relief structure is simple and convenient.

Preferably, a trigger member is arranged outside a valve core of the pressure relief valve in the pressure relief cavity, the trigger member is electrically connected with the control system, the trigger member is triggered when the valve core moves outwards, and the control system controls the machining tool of the multifunctional electric hydraulic pipe fitting to stop according to a trigger signal of the trigger member. The trigger component electrically connected with the control system is arranged outside the valve core of the pressure release valve, and the trigger component is triggered when the valve core moves outwards, so that the control system can automatically control the multifunctional electric hydraulic pipe fitting machining tool to stop according to the trigger signal of the trigger component.

Preferably, the plunger cavity and the pressure relief cavity are eccentrically arranged relative to the conical head, the surface, far away from the plunger cavity, of the oil storage ring forms a first tangent plane, the surface, far away from the pressure relief cavity, of the body forms a second tangent plane, and the inlet of the plunger cavity is located on the first tangent plane. The plunger cavity and the pressure relief cavity are arranged on the body in an eccentric manner, the surfaces of the body on the opposite sides of the plunger cavity and the pressure relief cavity are respectively cut to form a first section and a second section, the inlet of the plunger cavity is positioned on the first section, the size and the weight of the original whole machine can be reduced due to the formation of the first section and the second section, the structure of the whole machine is more compact, raw materials are saved, the carrying and processing are convenient, and meanwhile, the flow passage area outside the inlet of the plunger cavity is increased due to the two sections, so that the oil inlet resistance is reduced, the hydraulic oil is kept smooth when entering the plunger cavity, and the oil inlet efficiency is improved; the plunger cavity inlet, the plunger and the pressure release valve form a triangle, the gravity center of the body can be balanced, the feeding vibration is reduced, and the processing performance and quality of the pipe fitting are guaranteed.

Preferably, a pre-O-ring and a post-O-ring are interposed between the plunger cavity and the plunger sliding engagement surface in the plunger cavity, and a gap is formed between the pre-O-ring and the post-O-ring. Through press from both sides before establishing between the sliding fit face in plunger and plunger chamber, two back O type circles, two O type circles have formed the stable support to the plunger promptly, the plunger can not take place to rock and scrape plunger intracavity wall phenomenon in the plunger intracavity promptly, the O type circle that is in the outside end simultaneously can strike off foreign matter such as dust on the plunger intracavity wall again, avoid the foreign matter adhesion to influence the leakproofness on the O type circle of medial extremity, further cause the oil leak phenomenon, moreover, the steam generator is simple in structure, the leakproofness is good, the effectual emergence of avoiding the oil leak phenomenon.

The feeding mechanism can only use one return spring, preferably, the feeding mechanism comprises a driving cavity on the body, the conical head is connected in the driving cavity in a sliding mode through a piston, the return spring and the power-assisted spring are sequentially sleeved outside the conical head from inside to outside, and when the conical head is fed forwards to the maximum stroke, the piston is arranged above the power-assisted spring and is in a compressed state. The power-assisted spring is sleeved at the front end of the outer side of the reset spring, the front section stroke of the conical head, the compression deformation of the reset spring at the inner side, the rear section stroke of the conical head, the reset spring and the power-assisted spring are simultaneously compressed and deformed, namely, a segmented compression spring mode is adopted, when the pipe fitting is machined, only the reset spring is compressed and deformed, and when the pipe fitting is machined, the power-assisted spring is simultaneously compressed and deformed, so that the conical head clamped on the expansion pipe head can be powerfully and quickly separated through the common restoring force of the reset spring and the power-assisted spring, compared with the method only using a single reset spring, the shearing stress of the reset spring is greatly reduced, the material and machining requirements on the spring can be reduced, the production cost is saved, the use reliability is improved, the service life of the spring is prolonged, the energy consumption of the driving piston is low, the piston is flexibly reset and quickly reacts, and the machining efficiency of the pipe fitting is improved; when processing simultaneously and reseing, adopt inside and outside dual spring support, the conical head advances, moves back stability good, and the energy-absorbing is effectual, reduces the conical head and rocks, and vibrations and noise reduce by a wide margin, not only do benefit to and guarantee processingquality, and can reduce conical head and piston wearing and tearing, extension pipe fitting machining tool's life.

More preferably, the outer ring surface corresponding to the inner end of the conical head extends outwards to form an annular boss, and the inner end of the return spring abuts against the outer end surface of the annular boss. The annular boss is connected to awl head medial extremity integral type, and the annular boss passes through the reset spring crimping on the outer terminal surface of piston, because the annular boss of awl head is in reset spring's pressure effect all the time down, and the awl head is firm crimping promptly on the piston end face, when needing to tear open and trade the awl head, demolish reset spring and can change, and the awl head location is simple, and is firm reliable, easy dismounting is swift when the maintenance is changed.

The driving mechanism can also adopt structures such as a planet wheel and a friction wheel, and preferably comprises a worm and gear assembly on the body of the outer side end of the plunger cavity, a worm in the worm and gear assembly is coaxially connected with the output end of a driving motor, the other end of the driving motor opposite to the worm is electrically connected with a battery pack, an eccentric wheel is arranged on a rotating shaft of the worm gear, and the eccentric wheel is mutually matched with the outer side end of the plunger connected in the plunger cavity in a sliding manner and drives the plunger to slide in the plunger cavity. The motor drives the worm, the worm drives the worm wheel, the worm wheel drives the eccentric wheel of coaxial setting to rotate (the worm wheel also can be replaced with helical gear), the eccentric wheel is mutually supported with the outside end of plunger, both mutually support the connected mode and can be through multiple connected modes such as outer annular butt, interior annular sliding connection, and keep rotating through the pivot and connect, the convex surface of eccentric wheel promotes the plunger and slides to the working chamber and realize feeding, when the convex surface of eccentric wheel is outside, the plunger outwards slides and resets, moreover, the steam generator is simple in structure, high in transmission efficiency, the operation is steady and reliable, the plunger and the motor output shaft cross arrangement, make the complete machine be "7" font structure, compact and reasonable in space structure, and the pipe fitting processing who is particularly useful for narrow and small space.

Preferably, the body is covered with a shell, the ports at two sides of the oil storage ring are respectively clamped on the body in a sealing way through a clamp, the inner wall surface of the shell corresponding to the clamp is provided with an annular clamp groove, and the clamp is clamped in the clamp groove in a mutually matched way. The annular clamp groove is supported outside the clamp, so that on one hand, the vibration of the whole machine can be effectively reduced, and on the other hand, the annular clamp groove has a compression effect on the port of an oil storage ring and has an oil leakage prevention function; and the air at the port of the oil storage ring can be isolated through the annular clamp groove, so that the aging failure of the clamp is avoided.

More preferably, a switch counter bore is formed in the shell, and a start button is arranged in the counter bore. The starting button is hidden in the switch counter bore, so that the problem of abnormal starting caused by mistaken touch when the starting button is exposed can be avoided, and potential safety hazards are avoided.

Preferably, a pressure release valve is slidably connected in the pressure release cavity, a valve sleeve on the pressure release valve is screwed in a port of the pressure release cavity, a jacking stud is arranged on the body corresponding to the valve sleeve, and the inner end of the jacking stud is arranged on the outer annular surface of the valve sleeve. The valve sleeve on the pressure relief valve is screwed and fixed in the cavity of the pressure relief valve through threads, the pressure relief pressure value of the pressure relief valve can be freely adjusted by screwing in or screwing out the valve sleeve, the structure is simple, the valve sleeve is convenient to assemble and disassemble, the valve sleeve is arranged at the top of the valve sleeve through the jacking stud on the side surface after the valve sleeve is adjusted in place so as to be locked, the valve sleeve is prevented from loosening, the positioning is reliable, and the disassembly and assembly are convenient.

Preferably, the pipe clamp comprises an expansion clamp, an expansion clamp and a pressing clamp. The pipe expanding chuck, the pipe expanding chuck and the pipe pressing chuck are respectively matched with the corresponding conical heads, and therefore the processing of pipe expanding, pipe expanding and pipe pressing can be met.

Therefore, the multifunctional electric hydraulic pipe fitting processing tool has the following advantages:

1. the portable structure is adopted, so that the pipe fitting is time-saving and labor-saving in processing and convenient to carry and use;

2. the oil storage ring at the inlet of the plunger cavity adopts a reinforced structural design, so that the inlet of the plunger cavity is always kept smooth, and the oil absorption efficiency is improved;

3. the hydraulic oil can be replaced and filled by self without disassembling the shell of the whole machine, the damage to parts is avoided, the operation is simple, and the skill requirement is extremely low; when hydraulic oil is filled, dead angles of exhaust can be automatically removed, and the service performance of the pipe fitting machining tool is ensured;

4. the plunger cavity and the pressure relief cavity are eccentrically arranged relative to the conical head, so that the weight is light and the damping effect is good;

5. the conical head adopts a double-spring design, so that the shearing stress of the return spring is greatly reduced, the production cost is saved, and the service life of the return spring is prolonged;

6. the whole machine is in a 7-shaped structure, has compact and reasonable space structure, and is particularly suitable for processing pipe fittings in narrow space;

7. the control system can automatically control the multifunctional electric hydraulic pipe fitting machining tool to stop according to the touch signal of the trigger component without manual pressure relief, and the multifunctional electric hydraulic pipe fitting machining tool is convenient to use, safe and reliable;

8. the automatic control system monitors the whole process of the feeding mechanism, the hydraulic mechanism, the driving mechanism and the power supply unit through temperature, current and voltage and operation time monitoring, and is stopped in time when abnormal conditions occur, so that the safety and the automation degree are high.

Description of the drawings:

FIG. 1 is an exploded view of the multi-function electro-hydraulic pipe machining tool of the present invention;

fig. 2 is a partial sectional view of the hydraulic mechanism of the present invention;

fig. 3 is another partial sectional view of the hydraulic mechanism of the present invention;

FIG. 4 is a schematic view of the structure of the elastic fork of the present invention;

FIG. 5 is a partial transverse cross-sectional view of the present invention;

FIG. 6 is a schematic structural view of a trigger member in the present invention in a first embodiment;

FIG. 7 is a schematic structural view of a trigger member in a second embodiment of the present invention;

FIG. 8 is a schematic structural view of a trigger member in the present invention in a third embodiment;

FIG. 9 is a schematic structural view of a trigger member in the present invention in a fourth embodiment;

FIG. 10 is a schematic view of the installation of the plunger of the present invention;

FIG. 11 is a schematic illustration of the installation of a pressure relief valve according to the present invention;

FIG. 12 is a schematic view of the feed mechanism of the present invention;

FIG. 13 is a schematic view of the installation of the cone head of the present invention;

FIG. 14 is a schematic structural view of a drive mechanism in a fifth embodiment of the present invention;

FIG. 15 is a schematic structural view of a drive mechanism in a sixth embodiment of the present invention;

fig. 16 is a schematic configuration diagram of a drive mechanism in the seventh embodiment of the present invention.

In the figure, a body 1, a first cut surface 11, a second cut surface 12, a rear O-ring 5, a front O-ring 6, a shell 7, a switch counter bore 71, a clamp 8, a battery pack 9, an annular clamp groove 10, a start button 13, a control system 14, an exhaust pressure plate 15, a longitudinal slide rail 151, a longitudinal slide rail groove 152, an arc-shaped groove 153, an air cavity 16, a tightening stud 17, a trigger member 18, an elastic sheet 181, a first elastic conductor 182, a second elastic conductor 183, a first insulator 184, a conductor 185, a second insulator 186, a shifting fork fulcrum 19, a pipe clamp 20, a conical head 21, an annular boss 211, a driving cavity 22, a power assisting cavity 221, a piston 23, a sunken groove 231, a return spring 24, a power assisting spring 25, a spring seat 26, a conical head cover ring 27, a baffle ring 28, a sliding sleeve 29, a plunger cavity 31, a pressure relief cavity 32, an oil storage ring 33, an exhaust concave ring 331, an annular oil storage groove 34, an oil filling channel 35, a filling oil, a fuel tank, a fuel, The oil filling port 36, the plunger 37, the oil suction one-way valve 371, the transverse rotating shaft 372, the pressure relief valve 38, the valve core 381, the valve sleeve 382, the clamping head groove 383, the elastic shifting fork 391, the U-shaped retaining ring 393, the limiting plate 390, the pressure relief shifting fork 392, the worm wheel 41, the worm 42, the rotating shaft 43, the driving motor 44, the eccentric wheel 45 and the balance weight 46.

The specific implementation mode is as follows:

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

Example 1:

as shown in fig. 1, the multifunctional electric hydraulic pipe fitting processing tool of the present invention includes a casing 7 similar to a "7" shape and a body 1 located in the casing 7, the front end of the body 1 is provided with a feeding mechanism, the rear end is provided with a hydraulic mechanism, and the lower part of the rear end is provided with a driving mechanism, wherein the feeding mechanism includes a driving cavity 22 located at the front end of the body 1, a conical head cover ring 27 is screwed outside the port of the driving cavity 22, the conical head cover ring 27 is coaxially and butt-jointed with the pipe fitting chuck 20, the pipe fitting chuck 20 in this embodiment is an expanding pipe head, the conical head 21 is an expanding pipe conical head, the conical head 21 is slidably connected in the driving cavity 22 through a piston 23, the driving mechanism pushes the conical head 21 to move outside the conical head cover ring 27 through the hydraulic mechanism, pipe fitting processing is performed on the pipe fitting clamped in the expanding pipe fitting, as shown in fig. 13, the conical head 21 is externally sleeved with a return spring 24, the outer ring corresponding to the inner end of the conical head 21 coaxially and outwardly extends to form an annular boss 211, the annular boss 211 is mutually fitted and embedded in the corresponding sunk groove 231 on the outer end face of the piston 23, the outer end of the return spring 24 is abutted on the inner end face of the conical head cover ring 27, and the inner end is abutted between the outer end face of the annular boss 211 and the outer end face of the piston 23 through the spring seat 26. The hydraulic mechanism comprises a plunger cavity 31 and a pressure relief cavity 32 which are axially communicated with the rear end surface of the driving cavity 22 in parallel, an oil storage ring 33 is covered on the body 1 corresponding to the plunger cavity 31 and the pressure relief cavity 32, the oil storage ring 33 is a rubber piece with the middle part protruding outwards, for convenience of installation, the diameter of the outer port of the oil storage ring 33 is smaller than that of the inner port, two side ports of the oil storage ring 33 are respectively clamped on the body 1 in a sealing way through a clamp 8, in the embodiment, the clamp 8 is an O-shaped rubber ring, an annular clamp groove 10 is arranged on the inner wall surface of the shell 7 corresponding to the clamp 8, the clamp 8 is clamped in the clamp groove 10 in a mutual matching way, as shown in figure 10, the plunger cavity 31 is connected with the plunger 37 in a mutual matching way in a sliding way, a front O-ring 6 and a rear O-ring 5 are clamped between the sliding matching surfaces of the plunger cavity 31 and the plunger 37 in the plunger cavity 31, and the front O-ring 6 and the rear O-ring 5 are both embedded in installation grooves corresponding to the outer ring surface of the plunger 37 (the piston 23 in the embodiment, a double O-ring structure is also adopted), and a certain gap is formed between the front-mounted O-shaped ring 6 and the rear-mounted O-shaped ring 5. The pressure release chamber 32 is connected with the pressure release valve 38 in a mutually matched and sliding manner, the plunger chamber 31 is communicated in the oil storage ring 33 through the oil suction one-way valve 371, as shown in fig. 5, the plunger chamber 31 and the pressure release chamber 32 are eccentrically arranged relative to the conical head 21, the surface of the body 1 far away from the plunger chamber 31 in the oil storage ring 33 forms a first tangent plane 11, the surface of the body 1 far away from the pressure release chamber 32 forms a second tangent plane 12, the first tangent plane 11 is vertical to the second tangent plane 12 in the embodiment, the oil suction one-way valve 371 is positioned on the first tangent plane 11, the strength of the wall surface of the oil storage ring 33 close to the inlet of the oil suction one-way valve 371 is increased, in the embodiment, the wall surface strength of the oil storage ring 33 is increased by increasing the wall thickness, that is, the wall surface of the oil storage ring 33 is gradually increased from the opposite side of the oil suction one-way valve 371 to the inlet direction of the oil suction one-way valve 371, as shown in fig. 2, the surface of the body 1 in the oil storage ring 33 extends downwards to form an annular oil storage groove 34, the annular oil sump 34 is communicated with the oil filler port 36 of the body 1 through the oil filler passage 35, and the oil retainer ring 33 corresponding to the inner port of the oil filler passage 35 is formed with an exhaust recessed ring 331 extending downward along the wall surface of the annular oil sump 34 on the corresponding side. As shown in fig. 11, a valve sleeve 382 on the pressure relief valve 38 is screwed into an end of the pressure relief cavity 32, a tightening stud 17 is screwed vertically onto the body 1 corresponding to the valve sleeve 382, an inner end of the tightening stud 17 is arranged on an outer annular surface of the valve sleeve 382, an outer end of a valve core 381 corresponding to a middle portion of the pressure relief valve 38 forms an annular chuck groove 383, an inner end of a pressure relief shift fork 392 has a U-shaped open groove which is mutually clamped in the chuck groove 383, and an outer end of the pressure relief shift fork 392 extends horizontally outwards and is slidably connected in a mutually matched slide groove on the housing 7. As shown in fig. 6, a trigger member 18 is provided below the port of the pressure relief cavity 32, the trigger member 18 is electrically connected to the control system 14, the trigger member in this embodiment is a detection switch, a spring plate 181 is provided on the body 1 corresponding to the lower portion of the outer end of the valve core 381 (the spring plate 181 may also be directly fixed to the outer end of the valve core 381), the upper end of the spring plate 181 extends into a chuck groove 383 on the outer end of the valve core 381, the middle portion of the spring plate 181 extends outward to form an arc contact, the detection switch valve is fixed to the body 1 opposite to the arc contact, the arc contact and the detection switch have a gap, when the valve core 381 moves outward, the spring plate 181 is driven to deform and move outward, the arc contact triggers the detection switch, and the control system 14 controls the automatic stop of the multifunctional electro-hydraulic pipe fitting processing tool according to a trigger signal of the detection switch. As shown in fig. 3, an exhaust pressure plate 15 capable of pressing the oil storage ring 33 to deform inward is mounted outside the oil storage ring 33 corresponding to the inner port of the refueling passage 35, the exhaust pressure plate 15 is a U-shaped structure made of plastic, the U-shaped exhaust pressure plate 15 is clamped outside the oil storage ring 33 with its opening facing downward, the two open ends of the exhaust pressure plate 15 are slidably connected to the inner wall surface of the housing 7 through a longitudinal slide rail 151 and a longitudinal slide rail groove 152, wherein the longitudinal slide rail groove 152 is located on the outer side surface of the exhaust pressure plate 15, the longitudinal slide rail 151 is located on the inner wall surface of the housing 7, the inner port of the refueling passage 35 is located in the middle of the clamping port of the U-shaped exhaust pressure plate 15, the middle of the clamping port bottom surface of the exhaust pressure plate 15 corresponding to the inner port of the refueling passage 35 extends upward to form an arc-shaped groove 153, the top surface of the exhaust pressure plate 15 opposite to the arc-shaped groove 153 extends upward to form a boss-shaped pressing mark, when the exhaust pressure plate 15 is pressed downward, the air chamber 16 formed on top of the oil retainer 33 passes through the inner port of the oil filling passage 35. The driving mechanism comprises a worm and gear assembly fixed on the body 1 at the outer end of the plunger cavity 31, as shown in fig. 14, a worm 42 in the worm and gear assembly is connected with the output end of a driving motor 44, the other end of the driving motor 44 opposite to the worm 42 is electrically connected with the battery pack 9, a rotating shaft 43 of the worm wheel 41 is sleeved and fixed with an eccentric wheel 45, a bearing is sleeved and sleeved on the outer annular surface of the eccentric wheel 45, an annular balance block 46 is connected on the rotating shaft 43 close to the eccentric wheel 45, the balance block 46 is positioned between the worm wheel 41 and the eccentric wheel 45, the bearing on the outer annular surface of the eccentric wheel 45 is abutted against the outer end of the plunger 33, the radial middle plane of the bearing and the eccentric wheel 45 penetrates through the axial lead of the plunger 33, and the eccentric wheel 45 is matched with the outer end of the plunger 37 and drives the plunger 37 to slide towards the plunger cavity 31. In order to improve the safety and reliability of use, the shell 7 corresponding to the front side below the body extends inwards to form a switch counter bore 71, the starting button 13 electrically connected with the battery pack 9 and the driving motor 44 is installed in the counter bore 71, and the top surface of the starting button 13 is positioned in the counter bore 71.

When the hydraulic pressure-bearing type pipe fitting expansion device is used, the pipe fitting expansion head is firstly inserted into a pipe fitting port, the starting button 13 is pressed by fingers, the battery pack 9 supplies power to the driving motor 44 after the control system 14 detects that the requirements are met, the driving motor 44 starts to operate, the driving motor drives the worm 42 to rotate, the worm 42 drives the worm wheel 41 to rotate, the worm wheel 41 drives the eccentric wheel 45 to rotate through the rotating shaft 43, the eccentric wheel 45 is matched with the outer side end of the plunger 37, when the convex surface of the eccentric wheel 45 is in contact with the plunger 37, the plunger 37 is pushed to slide into the plunger cavity 31, and hydraulic oil in the compressed plunger cavity 31 enters the driving cavity 22 through the one-way valve. When the eccentric wheel 45 rotates out of the convex surface section, the plunger 37 slides outwards under the action of the plunger spring, negative pressure is formed in the plunger cavity 31, and hydraulic oil in the annular oil storage tank 34 is sucked into the plunger cavity 31 through the oil suction one-way valve 371. This process is repeated to continue the transfer of hydraulic oil to the drive chamber 22. The hydraulic oil in the driving cavity 22 pushes the piston 23 to move outwards, the piston 23 pushes the conical head 21 to move outwards, and the conical head 21 is contacted with the tube expansion head through the conical surface to push the tube expansion head to move outwards along the radial direction, so that the inner diameter of the end opening of the tube fitting is enlarged. When the pipe expansion head moves to the set position, the pipe expansion head cannot move outwards continuously, the hydraulic pressure in the driving cavity 22 continuously and rapidly rises, when the pressure rises to the opening pressure of the pressure release valve 38, the pressure release valve 38 is opened, and the driving motor 44 stops working. The pressure in the drive chamber 22 rapidly drops and the return spring 24 pushes the conical head 21 and the piston 23 inwards, discharging the hydraulic oil through the relief valve 38 into the annular oil sump 34. The tube expanding head moves inwards along the radial direction to reset under the action of the annular spring, and the pipe fitting is taken down to complete the tube expanding processing.

Example 2:

the pipe clamp 20 is coaxially installed in a butt joint manner on the cone cover ring 27, the pipe clamp 20 in this embodiment is an expanding cone, the cone 21 in this embodiment is an expanding cone, the pressure relief fork 392 in this embodiment is removed, as shown in fig. 4, one end of an L-shaped elastic fork 391 is slidably connected in a chuck groove 383, the end of the elastic fork 391 corresponding to the bottom surface of the chuck groove 383 is provided with a mutually matched U-shaped notch groove, the elastic fork 391 is mutually clamped in the chuck groove 383 through the U-shaped notch groove, a gap is provided between the inner side surface of the elastic fork 391 and the annular wall surface in the corresponding chuck groove 383, the other end of the elastic fork 391 is located above the oil storage ring 33, the body 1 close to the valve core 381 extends outwards to form a fork fulcrum 19 capable of supporting the elastic fork 391, the end of the elastic fork 391 corresponding to the oil storage ring 33 extends towards the oil storage ring 33 to form a U-shaped retainer ring 393, the opening of the U-shaped retainer ring 393 extends in a direction parallel to the oil storage ring 33, the one end of limiting plate 390 is inserted in the opening of the U-shaped retainer 393 in a sliding manner, the inner wall surface of the U-shaped retainer 393 corresponding to the outer side surface of the limiting plate 390 extends outwards to form an inclined surface, the other end of the limiting plate 390 is fixed on the corresponding body 1 through a screw, in order to facilitate the operation, an elastic shifting fork 391 is used, the end part of the elastic shifting fork 391 opposite to the U-shaped retainer 393 is provided with a button, and therefore when the elastic shifting fork 391 is pulled axially, the elastic shifting fork 391 drives the valve core 381 to slide outwards, and when the elastic shifting fork 391 above the oil storage ring 33 is pressed radially, the elastic shifting fork 391 extrudes the oil storage ring 33 to be sunken inwards. The rest is exactly the same as in example 1.

Example 3:

the pipe clamp 20 is coaxially installed in a butt joint manner on the cone cover ring 27, the pipe clamp 20 in this embodiment is a pipe pressing head, the cone 21 is a pipe pressing cone, as shown in fig. 12, a baffle ring 28 is clamped between the inner end of the return spring 24 and the outer end face of the piston 23, the baffle ring 28 is sleeved on the cone 21 in a mutual matching manner, the inner ring face of the baffle ring 28 extends to the outer ring face of the cone 21, the outer ring face of the baffle ring 28 extends forwards along the outer ring face of the return spring 24 to form an L shape, the outer side of the front end of the return spring 24 is sleeved with a power spring 25, the rotation directions of the return spring 24 and the power spring 25 are opposite, the rigidity of the return spring 24 is smaller than that of the power spring 25, the power spring 25 is located in a power chamber 221 formed between the cone cover ring 27 and the port of the driving chamber 22, a sliding sleeve 29 is clamped between the power spring 25 and the return spring 24, the rear port of the sliding sleeve 29 extends outwards along the rear end face of the power spring 5 and is clamped between the rear end face of the port of the power spring 25 and the edge of the driving chamber 22, the outer ring surface of the front end part of the sliding sleeve 29 is connected with the inner ring surface of the cone head cover ring 27 corresponding to the front side of the boosting cavity 221 in a sliding mode, the front port of the sliding sleeve 29 extends inwards to the outside of the cone head 21 along the front end surface of the return spring 24, when the cone head 21 is fed forwards to 1/2-3/4 of the maximum stroke, the return spring 24 is in a compressed state, and when the cone head 21 is fed forwards to the maximum stroke, the boosting spring 25 is in a compressed state. The rest is exactly the same as in example 1 or 2.

Example 4:

as shown in fig. 7, the elastic sheet 181 in embodiment 1 is removed, the detection switch is directly fixed on the body 1 opposite to the outer end of the valve core 381, the outer end of the valve core 381 moves outwards to trigger the detection switch, and the control system 14 controls the automatic stop of the multifunctional electric hydraulic pipe machining tool according to the trigger signal of the detection switch. The rest is exactly the same as in example 3.

Example 5:

as shown in fig. 8, the trigger member 18 includes a first elastic conductor 182 and a second elastic conductor 183 electrically connected to the control system 14, the first elastic conductor 182 and the second elastic conductor 183 are arranged in parallel, upper ends of the first elastic conductor 182 and the second elastic conductor 183 are fixed to both sides of the first insulator 184, a lower end of the first elastic conductor 182 is located outside an end of the valve element 381, and the valve element 381 moves outward to bring a lower end of the first elastic conductor 182 into contact with the second elastic conductor 183. The rest is exactly the same as in example 3.

Example 6:

as shown in fig. 9, the trigger member 18 includes a conductive body 185 electrically connected to the control system 14, a lower end of the conductive body 185 is fixed to the corresponding body 1 below the spool 381 via a second insulator 186, an upper end extends to the outside of the end of the spool 381, the body 1 is also electrically connected to the control system 14, and the spool 381 abuts against the conductive body 185 when moving outward. The rest is exactly the same as in example 3.

Example 6:

as shown in fig. 15, the plunger 37 has an oval slide rail ring at its outer end, the slide rail ring is coplanar with the plunger 37, the long axis of the slide rail ring is perpendicular to the plunger 37, and the eccentric 45 is inserted into the central hole of the slide rail ring and is slidably connected to the inner annular surface of the slide rail ring. The rest is exactly the same as in example 1.

Example 7:

as shown in fig. 16, a transverse rotating shaft 372 is inserted and fixed at the outer end of the plunger 37, the transverse rotating shaft 372 is perpendicular to the plunger 37, and the transverse rotating shaft 372 is rotatably connected to the convex surface of the eccentric wheel 45. The rest is exactly the same as in example 1.

The specific embodiments described herein are merely illustrative of the principles of the utility model. 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 utility model as defined in the appended claims.

Claims

1. The utility model provides a multi-functional electronic hydraulic pressure pipe fitting machining tool, includes body (1) and locates feed mechanism, hydraulic pressure mechanism and actuating mechanism on body (1), its characterized in that: the driving motor (44) on the driving mechanism is electrically connected with the battery pack (9), the driving mechanism pushes the conical head (21) in the feeding mechanism to move outwards through the hydraulic mechanism and then is matched with the pipe fitting chuck (20), the hydraulic mechanism comprises a plunger cavity (31) and a pressure relief cavity (32) which are communicated with the rear end part of the conical head (21), the plunger cavity (31) and the pressure relief cavity (32) are communicated with an oil storage ring (33) which is covered outside the body (1), and the wall surface strength of the oil storage ring (33) close to the inlet of the plunger cavity (31) is increased.

2. The multi-function electro-hydraulic pipe machining tool of claim 1, wherein: the surface of the body (1) in the oil storage ring (33) extends downwards to form an annular oil storage groove (34), the annular oil storage groove (34) is communicated with an oil filling port (36) of the body (1) through an oil filling channel (35), and the edge of the oil storage ring (33) corresponding to the inner port of the oil filling channel (35) extends downwards along the wall surface of the annular oil storage groove (34) on the corresponding side to form an exhaust concave ring (331).

3. The multi-function electro-hydraulic pipe machining tool of claim 2, wherein: an exhaust pressure plate (15) capable of extruding the oil storage ring (33) to deform inwards is arranged outside the oil storage ring (33) corresponding to the inner port of the oiling channel (35), and when the exhaust pressure plate (15) is pressed downwards, an air cavity (16) formed at the top of the oil storage ring (33) passes through the inner port of the oiling channel (35).

4. The multi-function electro-hydraulic pipe machining tool of claim 1, wherein: the pressure relief cavity (32) is connected with a pressure relief valve (38) in a sliding mode, the outer side end of a valve core (381) on the pressure relief valve (38) is connected with one end of an elastic shifting fork (391), the other end of the elastic shifting fork (391) extends outwards to the upper portion of the oil storage ring (33), when the elastic shifting fork (391) is pulled axially, the elastic shifting fork (391) drives the valve core (381) to slide outwards, and when the elastic shifting fork (391) above the oil storage ring (33) is pressed radially, the elastic shifting fork (391) extrudes the oil storage ring (33) to be sunken inwards.

5. The multi-function electro-hydraulic pipe machining tool of claim 1, wherein: the pressure relief cavity (32) is connected with a pressure relief valve (38) in a sliding mode, the outer end of a valve core (381) on the pressure relief valve (38) is connected with the inner end of a pressure relief shifting fork (392), and the outer end of the pressure relief shifting fork (392) is connected to a shell (7) outside the body (1) in a sliding mode.

6. The multi-function electro-hydraulic pipe machining tool of claim 1, wherein: a trigger member (18) is arranged outside a valve core (381) of a pressure relief valve (38) in the pressure relief cavity (32), the trigger member (18) is electrically connected with the control system (14), the trigger member (18) is triggered when the valve core (381) moves outwards, and the control system (14) controls the multifunctional electric hydraulic pipe machining tool to stop according to a trigger signal of the trigger member.

7. The multi-function electro-hydraulic pipe machining tool of claim 1, wherein: the plunger cavity (31) and the pressure relief cavity (32) are eccentrically arranged relative to the conical head (21), a first tangent plane (11) is formed on the surface of the body (1) far away from the plunger cavity (31) in the oil storage ring (33), a second tangent plane (12) is formed on the surface of the body (1) far away from the pressure relief cavity (32), and an inlet of the plunger cavity (31) is located on the first tangent plane (11).

8. The multi-function electro-hydraulic pipe machining tool of claim 1, wherein: a front O-shaped ring (6) and a rear O-shaped ring (5) are clamped between the plunger cavity (31) and the sliding matching surface of the plunger (37) in the plunger cavity (31), and a gap is formed between the front O-shaped ring (6) and the rear O-shaped ring (5).

9. The multi-function electro-hydraulic pipe machining tool of claim 1, wherein: the feeding mechanism comprises a driving cavity (22) on the body (1), the conical head (21) is connected in the driving cavity (22) in a sliding mode through a piston (23), a return spring (24) and an assisting spring (25) are sequentially sleeved outside the conical head (21) from inside to outside, and when the conical head (21) is fed forwards to the maximum stroke, the piston (23) is arranged on the assisting spring (25) in a top mode and is in a compression state.

10. The multi-function electro-hydraulic tubing tool of claim 9, wherein: the outer ring surface corresponding to the inner side end of the conical head (21) extends outwards to form an annular boss (211), and the inner side end of the reset spring (24) is abutted to the outer end surface of the annular boss (211).

11. The multi-function electro-hydraulic pipe machining tool of claim 1, wherein: the driving mechanism comprises a worm and gear assembly on a plunger cavity (31) outer side end body (1), a worm (42) in the worm and gear assembly is coaxially connected with an output end of a driving motor (44), the other end of the driving motor (44) opposite to the worm (42) is electrically connected with a battery pack (9), an eccentric wheel (45) is arranged on a rotating shaft (43) of a worm wheel (41), and the eccentric wheel (45) is matched with the outer side end of a plunger (37) which is slidably connected in the plunger cavity (31) and drives the plunger (37) to slide in the plunger cavity (31).

12. The multi-function electro-hydraulic pipe machining tool of claim 1, wherein: the oil storage ring is characterized in that a shell (7) is arranged outside the body (1), ports on two sides of the oil storage ring (33) are tightly clamped on the body (1) through a clamp (8) respectively, an annular clamp groove (10) is formed in the inner wall surface of the shell (7) corresponding to the clamp (8), and the clamp (8) is clamped in the clamp groove (10) in an interfitting mode.

13. The multi-function electro-hydraulic tubing tool of claim 12, wherein: a switch counter bore (71) is formed in the shell (7), and a starting button (13) is arranged in the counter bore (71).

14. The multi-function electro-hydraulic pipe machining tool of claim 1, wherein: the pressure relief valve (38) is connected in the pressure relief cavity (32) in a sliding mode, a valve sleeve (382) on the pressure relief valve (38) is screwed in a port of the pressure relief cavity (32), a jacking stud (17) is arranged on the body (1) corresponding to the valve sleeve (382), and the inner side end of the jacking stud (17) is arranged on the outer annular surface of the valve sleeve (382).

15. The multi-function electro-hydraulic pipe machining tool of claim 1, wherein: the pipe fitting chuck (20) comprises a pipe expanding chuck, a pipe expanding chuck and a pipe pressing chuck.