CN105922203B - A kind of hand-held hydraulic tools - Google Patents
A kind of hand-held hydraulic tools Download PDFInfo
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- CN105922203B CN105922203B CN201610464575.8A CN201610464575A CN105922203B CN 105922203 B CN105922203 B CN 105922203B CN 201610464575 A CN201610464575 A CN 201610464575A CN 105922203 B CN105922203 B CN 105922203B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
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Abstract
The invention provides a kind of hand-held hydraulic tools, belong to hydraulic tool technical field.It solves the problems, such as the complicated of existing Electric hydraulic tool.This hand-held hydraulic tools, hydraulic tool includes cylinder body, oil storage cylinder and hydraulic head, there is pressure release valve pocket in cylinder body, relief valve intracavitary is provided with the floating pressure releasing valve core that can be slided in relief valve intracavitary, floating pressure releasing valve core seals with pressure release valve pocket contact surface is divided into left chamber and right chamber room by pressure release valve pocket, oil inlet passage is to left chamber's unilaterally connected, there is the oil return line crossing fluid through-hole and connect right chamber room and drainback passage of the connection right chamber room with hydraulic cavities on cylinder body, have connection left chamber and right chamber room on floating pressure releasing valve core connects through hole, have on floating pressure releasing valve core and stretch into right chamber room and can block the block head of oil return line oil inlet, the elastic component for making block head depart from oil return line oil inlet can be acted on floating pressure releasing valve core by being additionally provided with right chamber room.
Description
Technical field
The invention belongs to hydraulic tool technical field, is related to a kind of hand-held hydraulic tools.
Background technology
Hand-held hydraulic tools are a kind of presently the most light hydraulic tools, one-hand operation, generally use rechargeable type
Design.Hand-held hydraulic tools can realize the functions such as cutting, crimping, possess the advantages of quick, light and handy, durable, be extensively received by the market.
Existing hand-held hydraulic tools, for example, Chinese patent【Application number 201210578428.5；Authorization Notice No.
CN103072124B】A kind of disclosed Electric hydraulic tool, including body and the hydraulic end on body, body is interior to be had
There are oil cylinder and shoe cream room, be connected between oil cylinder and shoe cream room by oil circuit, also having on body can be by the power in shoe cream room
Oil pressure enters in-oil cylinder pressing mechanism, and hydraulic end is located in oil cylinder, has what shoe cream room and oil cylinder were connected on body
Oil leak hole, also has the switch module that can act pressing mechanism when its unlatching on body, and switch module includes being connected in body
On switch and the handle that is hinged on body, handle around its hinged place swing after can be resisted against on switch, switch passes through wire
It is connected between pressing mechanism and power supply, has between switch module and oil leak hole when switch module unlatching can be by draining bore closure
Plug part, pressing mechanism is using plunger pump and can drive the motor of plunger pump work, and hydraulic end is card pressure head.
Above-mentioned Electric hydraulic tool controls plug part to open or block oil leak hole by handle, can more conveniently
Pressurize or pressure release are carried out to in-oil cylinder pressure oil.But Electric hydraulic tool the problem of existing is the installation of plug part
It is that installation cavity is opened up on Electric hydraulic tool body, and plug part should be located in the oil circuit of draining, it is external with this again
Handle be connected so that the complicated of Electric hydraulic tool, processing cost are higher.
The content of the invention
The purpose of the present invention is above mentioned problem be present for existing technology, it is proposed that a kind of hand-held hydraulic tools, this hair
The technical problem of bright solution is how to realize that oil-feed and the automatic switchover of draining make hand-held hydraulic tools structure more simple.
The purpose of the present invention can be realized by following technical proposal：A kind of hand-held hydraulic tools, the hydraulic tool bag
Include cylinder body, oil storage cylinder and hydraulic head, there are hydraulic cavities in the cylinder body, the hydraulic head on cylinder body and with
Hydraulic cavities are connected, and have connection oil storage cylinder and the oil inlet passage of hydraulic cavities in the cylinder body, are provided with and will can store up on the cylinder body
In-oil cylinder hydraulic oil be transported to by oil inlet passage drive hydraulic head to act in hydraulic cavities send oil machine structure, the cylinder body
Inside also there is connection oil storage cylinder and the drainback passage of hydraulic cavities, it is characterised in that there is pressure release valve pocket in the cylinder body, it is described to let out
Pressure valve intracavitary is provided with the floating pressure releasing valve core that can be slided in relief valve intracavitary, and the floating pressure releasing valve core connects with pressure release valve pocket
Pressure release valve pocket is divided into left chamber and right chamber room by contacting surface sealing, the oil inlet passage to left chamber's unilaterally connected, on the cylinder body
The oil return line crossed fluid through-hole and connect right chamber room and drainback passage with connection right chamber room with hydraulic cavities, the floating relief valve
There is connect through hole of the connection left chamber with right chamber room on core, have on the floating pressure releasing valve core and stretch into right chamber room and can seal
The block head of oil return line oil inlet is blocked up, being additionally provided with to act on floating pressure releasing valve core in the right chamber room departs from block head
The elastic component of oil return line oil inlet.
The operation principle of this hand-held hydraulic tools is：Oil machine structure is sent in use, starting, the hydraulic oil in oil storage cylinder is passed through
Oil inlet passage is sent to the left chamber of pressure release valve pocket, the pressure rise of left chamber, and pressure, which is acted on floating pressure releasing valve core, makes floating
Pressure releasing valve core overcomes the elastic force of elastic component to be slided along pressure release valve pocket, the oil-feed of the block head closure oil return line of floating pressure releasing valve core
Mouthful, hydraulic oil can not enter drainback passage draining by oil return line；Meanwhile hydraulic oil enters the right side by connecting through hole from left chamber
Chamber, and hydraulic cavities drive hydraulic head action is flowed to by the fluid through-hole of crossing of right chamber room.After terminating, oil machine is sent in closing
Structure, oil inlet passage does not have hydraulic oil to enter left chamber, while the hydraulic oil in left chamber can not be also back in oil inlet passage, by
Connected in left chamber with right chamber room by connecting through hole, after left chamber's fuel cut-off, the pressure of hydraulic oil in left chamber and right chamber room
Power progressivelyes reach balance, and the restoring force of elastic component, which is acted on floating pressure releasing valve core, makes floating pressure releasing valve core be slided along pressure release valve pocket
Dynamic to reset, the oil inlet that block head departs from oil return line makes oil return line open-minded, and the hydraulic oil in hydraulic cavities can be by crossing fluid through-hole
Right chamber room is flowed back to, and is returned to by oil return line into drainback passage in shoe cream room, realizes oil return.
By setting pressure release valve pocket in cylinder body, the floating pressure releasing valve core of relief valve intracavitary is working this hand-held hydraulic tools
When entered the high pressure liquid force feed of left chamber from oil inlet passage and promote closure oil return line, the hydraulic pressure of relief valve intracavitary after end-of-job
Oil pressure reaches balance, and floating pressure releasing valve core resets under the restoring force effect of elastic component makes oil return line open-minded.The envelope of oil return line
It is stifled and open-minded, floating pressure releasing valve core is controlled in the motion of pressure release valve pocket by the hydraulic fluid pressure change of relief valve intracavitary,
The automatic switchover of oil-feed and oil return is realized, pressure release valve pocket is located in cylinder body and need not be communicated with the outside, without setting
The mechanical driving mechanism of floating pressure releasing valve core motion is driven, so that this hand-held hydraulic tools structure is more simple.
As a kind of scheme, in above-mentioned hand-held hydraulic tools, the pressure release valve pocket has what is opened towards hydraulic cavities
Installing port, has been connected through a screw thread oil return plug on the installing port, described to cross fluid through-hole and oil return line is respectively positioned on oil return plug
On.During assembling, floating pressure releasing valve core directly can load relief valve intracavitary from installing port, then oil return plug is arrived by screwed
Pressure release valve pocket is closed on installing port, and crosses fluid through-hole and oil return line and directly accomplishes in oil return plug processing in oil return plug,
Reduce the difficulty of processing and assembling.
In above-mentioned hand-held hydraulic tools, the oil return plug includes having externally threaded connecting portion and stretches into relief valve
The work department of intracavitary, there is annular oil guide groove on the outer peripheral face of the work department, the oil return line is in the bottom of annular oil guide groove
At least one oil-out, the drainback passage are connected with annular oil guide groove, also have and above-mentioned annular in the work department
Oil guide groove is adjacent and annular seal groove close to relief valve intracavitary portion, is provided with sealing ring in the annular seal groove.During oil return,
The hydraulic oil entered from the oil inlet of oil return line first can enter annular oil guide groove from the oil-out of oil return line, then be led by annular
Oil groove is entered in drainback passage, set annular oil guide groove directly connected with drainback passage relative to oil return line reduce cylinder body with
Position accuracy demand when oil return plug is assembled；Also, one end of annular oil guide groove is sealed by seal, other end screw thread is matched somebody with somebody
Conjunction also has sealing effectiveness, improves sealing, prevents the hydraulic fluid leak in annular oil guide groove.
It is described to cross straight hole of the fluid through-hole for insertion oil return plug both ends of the surface in above-mentioned hand-held hydraulic tools.Liquid is crossed to lead to
The structure in hole is simple, and processing is more easy.
Preferably, in above-mentioned hand-held hydraulic tools, the cylinder body uses split-type structural, the cylinder body include into
The operating cylinder of oil cylinder and inner hollow, it is described enter oil cylinder end there is cylindrical connector, the connector stretches into work
Make to make in oil cylinder to form the hydraulic cavities in operating cylinder, the installing port be located on the end face of connector and with above-mentioned hydraulic cavities
Be connected, it is described enter oil cylinder and operating cylinder be fixedly connected with.Such structure so that it is all more simple to enter oil cylinder and operating cylinder structure
It is single, and individually processed in link is manufactured, reduce difficulty of processing and processing cost；Installing port is located at the connection head end into oil cylinder
On face, during assembling, the assembling into the parts on oil cylinder can be first completed, then operating cylinder is connected with entering oil cylinder, is dropped significantly
Low assembly difficulty.
As further preferred, in above-mentioned hand-held hydraulic tools, it is described enter oil cylinder and operating cylinder can by screw thread
Tear connection open.By the way of releasable connection, operating cylinder can be pulled down in maintenance, it is convenient to pull down oil return plug to pressure release
The parts of valve pocket energy are changed.
Alternatively, in above-mentioned hand-held hydraulic tools, the cylinder body uses split-type structural, the cylinder body
There is cut-off portion including front-bank rotor housing and rear-bank rotor housing, in the front-bank rotor housing, the hydraulic cavities are located at the front portion in cut-off portion, it is described every
The rear portion in disconnected portion has cavity one, and the rear-bank rotor housing is anterior to be had and the one-to-one cavity of the above-mentioned location and shape of cavity one
Two, the front-bank rotor housing is fixedly connected with rear-bank rotor housing makes cavity one and cavity two be connected to form the pressure release valve pocket, and the liquid of crossing leads to
Hole and oil return line are respectively positioned in cut-off portion.
In above-mentioned hand-held hydraulic tools, the diameter of the floating pressure releasing valve core is less than the diameter of pressure release valve pocket, described
At least there are two butting sections to match with pressure release valve pocket shapes and sizes on floating pressure releasing valve core lateral surface, supported described in two
Gap between relying part forms the mounting groove of installation sealing ring, what the floating pressure releasing valve core lateral surface exported close to oil inlet passage
Lateral surface also has raised forced section.The butting section of floating pressure releasing valve core can contact with the inwall of pressure release valve pocket, by close
The sealing of left chamber and right chamber room is realized in seal, such structure both enable floating pressure releasing valve core in relief valve intracavitary swimmingly
Slide, in turn ensure that sealing；Hydraulic oil can act on thrust of the forced section increase to floating pressure releasing valve core；Butting section, by
Power portion and Oil Guide passage process on floating pressure releasing valve core so that the structure of pressure release valve pocket is more simple, reduces processing
Difficulty.
Also having preferably, in above-mentioned hand-held hydraulic tools, on the floating pressure releasing valve core can will be from close to entering
The hydraulic oil of oily channel outlet leads to the Oil Guide passage for the side that the forced section exports towards oil inlet passage.When floating relief valve
When core is located at initial position, the end of floating pressure releasing valve core is close to the outlet of oil inlet passage, and Oil Guide passage can be by oil-feed
The hydraulic oil in the exit of passage is guided on forced section so that the slip of floating pressure releasing valve core is more rapid and smooth during use.
In above-mentioned hand-held hydraulic tools, the floating pressure releasing valve core, which is located inside one end of left chamber, has installation
Hole, steel ball and back-moving spring is provided with the mounting hole, the spring-force driven dual of the back-moving spring enables steel ball on steel ball
Block the outlet of oil inlet passage.Steel ball and back-moving spring are installed in the mounting hole of floating pressure releasing valve core one end, processing and dress
With more convenient.
Preferably, in above-mentioned hand-held hydraulic tools, the back-moving spring is volute spring.Volute spring stress it
The part of ringlet can be locked into the part of great circle afterwards so that the volume of volute spring is smaller, is taken while elastic force is ensured
Space is smaller.
Compared with prior art, it is the advantages of this hand-held hydraulic tools, this hand-held hydraulic tools sets in cylinder body and let out
Pressure valve chamber, blocked back by being moved positioned at the floating pressure releasing valve core of relief valve intracavitary in oil-feed under the pressure effect of hydraulic oil
Oil circuit, floating pressure releasing valve core, which resets, during oil return makes oil return line open-minded, so as to realize the automatic switchover of oil-feed and oil return, makes this hand-held
Hydraulic tool structure is more simple.
Brief description of the drawings
Fig. 1 is the structural representation of this hand-held hydraulic tools.
Fig. 2 is the broken section structural representation that this hand-held hydraulic tools is entered under oil condition.
Fig. 3 is the partial enlarged drawing at A in Fig. 2.
Fig. 4 is the broken section structural representation that this hand-held hydraulic tools enters another angle under oil condition.
Fig. 5 is the partial enlarged drawing at B in Fig. 4.
Fig. 6 is the broken section structural representation under this hand-held hydraulic tools oil return state.
Fig. 7 is the structural representation of the floating pressure releasing valve core of this hand-held hydraulic tools in embodiment one.
Fig. 8 is the structural representation of the oil return plug of this hand-held hydraulic tools.
Fig. 9 is the structural representation of the floating pressure releasing valve core of this hand-held hydraulic tools in example IV.
Figure 10 is the cross section structure diagram of the floating pressure releasing valve core of this hand-held hydraulic tools in example IV.
Figure 11 is the structural representation for entering oil cylinder of this hand-held hydraulic tools in embodiment one.
Figure 12 is the structural representation of the operating cylinder of this hand-held hydraulic tools in embodiment one.
In figure, 1, cylinder body；1a, enter oil cylinder；1a1, connector；1b, operating cylinder；2nd, hydraulic cavities；3rd, oil inlet passage；4th, return
Oily passage；5th, pressure release valve pocket；5a, left chamber；5b, right chamber room；5c, installing port；6th, floating pressure releasing valve core；6a, connection through hole；
6b, block head；6c, butting section；6d, mounting groove；6e, forced section；6f, Oil Guide passage；6g, mounting hole；7th, fluid through-hole is crossed；8th, return
Oil circuit；9th, elastic component；10th, oil return plug；10a, connecting portion；10b, work department；10c, annular oil guide groove；10d, ring packing
Groove；11st, sealing ring；12nd, steel ball；13rd, back-moving spring；14th, oil machine structure is sent；15th, oil storage cylinder；16th, hydraulic head.
Embodiment
It is the specific embodiment of the present invention and with reference to accompanying drawing below, technical scheme is further described,
But the present invention is not limited to these embodiments.
Embodiment one：
This hand-held hydraulic tools includes cylinder body 1, oil storage cylinder 15, hydraulic first 16, hydraulic cavities 2, oil inlet passage 3, oil return
Passage 4, send oil machine structure 14, pressure release valve pocket 5, excessively floating pressure releasing valve core 6, fluid through-hole 7, oil return line 8, connection through hole 6a, block head
6b and elastic component 9.
As depicted in figs. 1 and 2, hydraulic cavities 2 are located in cylinder body 1, and hydraulic first 16 is arranged on cylinder body 1 and and hydraulic cavities
2 are connected, and oil inlet passage 3 is used to the hydraulic oil in oil storage cylinder 15 being transported in hydraulic cavities 2, and drainback passage 4 is in hydraulic cavities 2
Hydraulic oil returns to the path of oil storage cylinder 15.As shown in Figure 1 and Figure 4, send oil machine structure 14 be arranged on cylinder body 1 for hydraulic oil in oil-feed
Conveying in passage 3 provides power, in the present embodiment, send oil machine structure 14 to drive the plunger of plunger motion by eccentric wheel for motor
Pump.In the production and manufacturing process of reality, oil machine structure 14 is sent to use other hydraulic pump structures such as gear pump.
As depicted in figs. 1 and 2, in the present embodiment, cylinder body 1 uses split-type structural, and cylinder body 1 is included into oil cylinder 1a and work
Oil cylinder 1b.As shown in figure 11, entering oil cylinder 1a ends has cylindrical connector 1a1.As shown in figure 12, in operating cylinder 1b
Portion is hollow.Connector 1a1, which is stretched into operating cylinder 1b, to be made to form hydraulic cavities 2 in operating cylinder 1b, enters oil cylinder 1a and operating cylinder
1b is fixedly connected with.Preferably, oil cylinder 1a and operating cylinder 1b are entered by screw thread releasable connection, using the side of releasable connection
Formula, operating cylinder 1b can be pulled down in maintenance, facilitate the maintenance to entering oil cylinder 1a.
As shown in Fig. 2, Fig. 3 and Figure 11, pressure release valve pocket 5 is located at into oil cylinder 1a, and pressure release valve pocket 5, which has, is located at connector
On 1a1 end face and relative to the installing port 5c that opens of the external world, enter after oil cylinder 1a connects with operating cylinder 1b, installing port 5c and liquid
Pressure chamber 2 is connected, and the size of floating pressure releasing valve core 6 is less than the size of pressure release valve pocket 5, floating pressure releasing valve core 6 is loaded pressure release
Valve pocket 5, the oil return plug 10 that installing port 5c is connected through a screw thread are blocked.As shown in fig. 7, the lateral surface of floating pressure releasing valve core 6
It is upper that there are two butting section 6c to match with the shapes and sizes of pressure release valve pocket 5, enable floating pressure releasing valve core 6 in pressure release valve pocket
Slided in 5.Gap between two butting section 6c forms the mounting groove 6d of installation sealing ring 11, floating pressure releasing valve core 6 and pressure release
The sealing of the contact surface of valve pocket 5 divides pressure release valve pocket 5 for left chamber 5a and right chamber room 5b.The lateral surface of floating pressure releasing valve core 6 is close to oil-feed
The lateral surface that passage 3 exports also has raised forced section 6e, and hydraulic oil can act on forced section 6e increases to floating pressure release
The thrust of valve element 6.
As shown in Figures 2 and 3, left chamber 5a connects with oil inlet passage 3, and floating pressure releasing valve core 6 is located at the one of left chamber 5a
End is internal to have mounting hole 6g, and steel ball 12 and back-moving spring 13, the spring-force driven dual of back-moving spring 13 are provided with mounting hole 6g
Steel ball 12 is set to block the outlet of oil inlet passage 3 on steel ball 12.Preferably, back-moving spring 13 is volute spring, cone
The part of ringlet can be locked into the part of great circle after shape spring stress so that the volume of volute spring is smaller, is ensureing elastic force
While the space that takes it is smaller.
As shown in figure 8, oil return plug 10 includes having externally threaded connecting portion 10a and stretches into the work in pressure release valve pocket 5
Portion 10b, there is annular oil guide groove 10c on work department 10b outer peripheral face.As shown in Figure 4 and Figure 5, fluid through-hole 7 is crossed to block up positioned at oil return
On first 10 and right chamber room 5b and hydraulic cavities 2 are connected, and the quantity for crossing fluid through-hole 7 is two, each fluid through-hole 7 of crossing penetrates oil return
The both ends of the surface of plug 10；Oil return line 8 is located in oil return plug 10, and oil return line 8 is in annular oil guide groove 10c bottom at least one
Individual oil-out, drainback passage 4 are connected with annular oil guide groove 10c, also have on work department 10b adjacent with annular oil guide groove 10c
And it is provided with sealing ring 11 in the annular seal groove 10d inside pressure release valve pocket 5, annular seal groove 10d.
As shown in Figures 2 and 3, have connection left chamber 5a and right chamber room 5b's to connect through hole 6a on floating pressure releasing valve core 6,
Block head 6b is located at floating pressure releasing valve core 6 close to right chamber room 5b one end and stretches into right chamber room 5b, in the present embodiment, block head 6b
In cone, floating pressure releasing valve core 6, which slides, can make block head 6b end insert the oil inlet of oil return line 8, so as to block oil return line
8.Elastic component 9 is arranged in the 5b of right chamber room, and the one end of elastic component 9 is resisted against in oil return plug 10, and the other end is resisted against floating pressure release
On valve element 6, the elastic force of elastic component 9 makes the block head 6b on floating pressure releasing valve core 6 depart from the oil inlet of oil return line 8.Floating relief valve
Core 6 is arranged in pressure release valve pocket 5, and is moved in the pressure change of hydraulic oil, realizes the automatic switchover of oil-feed and oil return, relief valve
Chamber 5 does not connect with the external world, avoids the hydraulic fluid leak in pressure release valve pocket 5 so that this hand-held hydraulic tools is less likely to occur to leak
The failure of oil, use are more reliable.In the present embodiment, elastic component 9 is spring, in the production and manufacturing process of reality, elasticity
Part 9 can also use the flexible parts such as shell fragment.
The operation principle of this hand-held hydraulic tools is：Oil machine structure 14 is sent in use, starting, by the hydraulic oil in oil storage cylinder 15
It is transported in oil inlet passage 3, hydraulic pressure oil overhold is driven steel ball 12 and entered in the left chamber 5a of pressure release valve pocket 5, and drives floating relief valve
Core 6 overcomes the elastic force of elastic component 9 to be slided along pressure release valve pocket 5, the block head 6b of floating pressure releasing valve core 6 is blocked entering for oil return line 8
Hydraulic fluid port, as shown in Fig. 2 hydraulic oil can not enter the draining of drainback passage 4 by oil return line 8；Meanwhile hydraulic oil is by connecting through hole
6a enters right chamber room 5b from left chamber 5a, and flows to hydraulic cavities 2 by right chamber room 5b fluid through-hole 7 of crossing, and drives hydraulic
First 16 action.After terminating, oil machine structure 14 is sent in closing, and oil inlet passage 3 enters left chamber 5a without hydraulic oil, and steel ball 12 is multiple
Position spring 13 drives lower closure oil inlet passage 3, the hydraulic oil in left chamber 5a can not be back in oil inlet passage 3, due to a left side
Chamber 5a and right chamber room 5b are by connecting through hole 6a connections, and the pressure of hydraulic oil progressivelyes reach flat in left chamber 5a and right chamber room 5b
Weighing apparatus, floating pressure releasing valve core 6 reset in the presence of elastic component 9, and the oil inlet that block head 6b departs from oil return line 8 opens oil return line 8
It is logical, as shown in fig. 6, the hydraulic oil in hydraulic cavities 2 can flow back to right chamber room 5b by crossing fluid through-hole 7, and enter ring from oil return line 8
In shape oil guide groove 10c, and returned to by drainback passage 4 in shoe cream room, realize oil return.
Embodiment two：
Technical scheme in the present embodiment and the technical scheme in embodiment one are essentially identical, and difference is, this reality
Apply in example, cylinder body 1 uses monolithic construction.
Embodiment three：
Compared with the technical scheme in embodiment one, cylinder body 1 also uses split-type structural, and difference is, the present embodiment
In, it is not provided with installing port 5c and oil return plug 10.In order to which floating pressure releasing valve core 6 is loaded in pressure release valve pocket 5, cylinder body 1 is divided
For front-bank rotor housing and rear-bank rotor housing, front-bank rotor housing is interior to have cut-off portion, and hydraulic cavities 2 are located at the front portion in cut-off portion, the rear portion tool in cut-off portion
There is cavity one, rear-bank rotor housing is anterior to be had and the above-mentioned one-to-one cavity two of the location and shape of cavity one, front-bank rotor housing and rear-bank rotor housing
Being fixedly connected makes cavity one and cavity two be connected to form pressure release valve pocket 5, crosses fluid through-hole 7 and oil return line 8 is respectively positioned in cut-off portion.
Example IV：
Technical scheme in the present embodiment and the basic phase of technical scheme in embodiment one, embodiment two and embodiment three
Together, difference is, as shown in Figure 9 and Figure 10, in the present embodiment, on floating pressure releasing valve core 6 also have can will from close to enter
The hydraulic oil that oily passage 3 exports leads to the Oil Guide passage 6f for the side that the forced section 6e exports towards oil inlet passage 3.Work as floating
When pressure releasing valve core 6 is located at initial position, the end of floating pressure releasing valve core 6 is close to the outlet of oil inlet passage 3, and Oil Guide passage 6f
The hydraulic oil in the exit of oil inlet passage 3 can be guided on forced section 6e so that the slip of floating pressure releasing valve core 6 is more during use
To be rapid and smooth.During the manufacturing of reality, Oil Guide passage 6f can be penetrated directly from the outer wall of floating pressure releasing valve core 6 to be pacified
Fill hole 6g so that be directed to forced section 6e into the hydraulic oil in mounting hole 6g, reduce the pressure loss of hydraulic oil.
Specific embodiment described herein is only to spirit explanation for example of the invention.Technology belonging to the present invention is led
The technical staff in domain can be made various modifications or supplement to described specific embodiment or be replaced using similar mode
Generation, but without departing from the spiritual of the present invention or surmount scope defined in appended claims.
Although cylinder body 1 has more been used herein, has entered oil cylinder 1a, connector 1a1, operating cylinder 1b, hydraulic cavities 2, oil-feed
Passage 3, drainback passage 4, pressure release valve pocket 5, left chamber 5a, right chamber room 5b, installing port 5c, floating pressure releasing valve core 6, connection through hole
6a, block head 6b, butting section 6c, mounting groove 6d, forced section 6e, Oil Guide passage 6f, mounting hole 6g, cross fluid through-hole 7, oil return line 8,
Elastic component 9, oil return plug 10, connecting portion 10a, work department 10b, annular oil guide groove 10c, annular seal groove 10d, sealing ring 11,
Steel ball 12, back-moving spring 13, the terms such as oil machine structure 14 are sent, but be not precluded from the possibility using other terms.Use these arts
Language is used for the purpose of more easily describing and explaining the essence of the present invention；Being construed as any additional limitation is all
Disagreed with spirit of the present invention.
Claims (13)
1. a kind of hand-held hydraulic tools, the hydraulic tool includes cylinder body (1), oil storage cylinder (15) and hydraulic head (16), institute
Stating has hydraulic cavities (2) in cylinder body (1), the hydraulic head (16) is arranged on cylinder body (1) and is connected with hydraulic cavities (2),
There is connection oil storage cylinder (15) and the oil inlet passage (3) of hydraulic cavities (2) in the cylinder body (1), energy is provided with the cylinder body (1)
The hydraulic oil in oil storage cylinder (15) is transported into driving hydraulic head (16) in hydraulic cavities (2) by oil inlet passage (3) to act
Send oil machine structure (14), also there is connection oil storage cylinder (15) and the drainback passage (4) of hydraulic cavities (2), its spy in the cylinder body (1)
Sign is there is pressure release valve pocket (5) in the cylinder body (1), being provided with the pressure release valve pocket (5) can be in pressure release valve pocket (5)
The floating pressure releasing valve core (6) of interior slip, the floating pressure releasing valve core (6) are sealed pressure release valve pocket with pressure release valve pocket (5) contact surface
(5) it is divided into left chamber (5a) and right chamber room (5b), the oil inlet passage (3) arrives left chamber (5a) unilaterally connected, the cylinder body (1)
Above time crossed fluid through-hole (7) and connect right chamber room (5b) and drainback passage (4) with connection right chamber room (5b) with hydraulic cavities (2)
Oil circuit (8), have on the floating pressure releasing valve core (6) connection left chamber (5a) and right chamber room (5b's) to connect through hole (6a), institute
State to have on floating pressure releasing valve core (6) and stretch into right chamber room (5b) and can block the block head (6b) of oil return line (8) oil inlet, institute
Stating to be additionally provided with to act on floating pressure releasing valve core (6) in right chamber room (5b) makes block head (6b) depart from oil return line (8) oil-feed
Mouthful elastic component (9), the cylinder body (1) uses split-type structural, and the cylinder body (1) is included into oil cylinder (1a) and inner hollow
Operating cylinder (1b), it is described enter oil cylinder (1a) end there is cylindrical connector (1a1), the connector (1a1) is stretched into
Make in operating cylinder (1b) to form the hydraulic cavities (2) in operating cylinder (1b), it is described enter oil cylinder (1a) and operating cylinder (1b)
It is fixedly connected with.
2. hand-held hydraulic tools according to claim 1, it is characterised in that the pressure release valve pocket (5) has towards hydraulic pressure
The installing port (5c) that chamber (2) is opened, oil return plug (10) is connected through a screw thread on the installing port (5c), it is described to cross fluid through-hole
(7) it is respectively positioned on oil return line (8) in oil return plug (10).
3. hand-held hydraulic tools according to claim 2, it is characterised in that the oil return plug (10) includes having outer spiral shell
The connecting portion (10a) of line and the work department (10b) stretched into pressure release valve pocket (5), have on the outer peripheral face of the work department (10b)
Annular oil guide groove (10c), the oil return line (8) is at least one oil-out of the bottom of annular oil guide groove (10c), the oil return
Passage (4) is connected with annular oil guide groove (10c), also has and above-mentioned annular oil guide groove (10c) phase on the work department (10b)
The internal annular seal groove (10d) of adjacent and close pressure release valve pocket (5), the annular seal groove (10d) is interior to be provided with sealing ring
(11)。
4. hand-held hydraulic tools according to claim 2, it is characterised in that the fluid through-hole (7) of crossing blocks up for insertion oil return
The straight hole of head (10) both ends of the surface.
5. the hand-held hydraulic tools according to any one of claim 2 to 4, it is characterised in that installing port (5c) position
It is connected on connector (1a1) end face and with above-mentioned hydraulic cavities (2).
6. hand-held hydraulic tools according to claim 5, it is characterised in that it is described enter oil cylinder (1a) and operating cylinder (1b)
Pass through screw thread releasable connection.
7. hand-held hydraulic tools according to any one of claim 1 to 4, it is characterised in that the floating pressure releasing valve core
(6) diameter is less than the internal diameter of pressure release valve pocket (5), at least has two and pressure release on floating pressure releasing valve core (6) lateral surface
The butting section (6c) that valve pocket (5) shapes and sizes match, the gap between two butting sections (6c) form installation sealing
The mounting groove (6d) of (11) is enclosed, floating pressure releasing valve core (6) lateral surface also has close to the lateral surface that oil inlet passage (3) exports
Raised forced section (6e).
8. hand-held hydraulic tools according to claim 7, it is characterised in that also have on the floating pressure releasing valve core (6)
Hydraulic oil from close oil inlet passage (3) outlet can be led to the side that the forced section (6e) exports towards oil inlet passage (3)
Oil Guide passage (6f).
9. hand-held hydraulic tools according to any one of claim 1 to 4, it is characterised in that the floating pressure releasing valve core
(6) there is mounting hole (6g) inside one end of left chamber (5a), steel ball (12) is provided with the mounting hole (6g) and is answered
Position spring (13), the spring-force driven dual of the back-moving spring (13) make steel ball (12) to block oil inlet passage on steel ball (12)
(3) outlet.
10. a kind of hand-held hydraulic tools, the hydraulic tool includes cylinder body (1), oil storage cylinder (15) and hydraulic head (16), institute
Stating has hydraulic cavities (2) in cylinder body (1), the hydraulic head (16) is arranged on cylinder body (1) and is connected with hydraulic cavities (2),
There is connection oil storage cylinder (15) and the oil inlet passage (3) of hydraulic cavities (2) in the cylinder body (1), energy is provided with the cylinder body (1)
The hydraulic oil in oil storage cylinder (15) is transported into driving hydraulic head (16) in hydraulic cavities (2) by oil inlet passage (3) to act
Send oil machine structure (14), also there is connection oil storage cylinder (15) and the drainback passage (4) of hydraulic cavities (2), its spy in the cylinder body (1)
Sign is there is pressure release valve pocket (5) in the cylinder body (1), being provided with the pressure release valve pocket (5) can be in pressure release valve pocket (5)
The floating pressure releasing valve core (6) of interior slip, the floating pressure releasing valve core (6) are sealed pressure release valve pocket with pressure release valve pocket (5) contact surface
(5) it is divided into left chamber (5a) and right chamber room (5b), the oil inlet passage (3) arrives left chamber (5a) unilaterally connected, the cylinder body (1)
Above time crossed fluid through-hole (7) and connect right chamber room (5b) and drainback passage (4) with connection right chamber room (5b) with hydraulic cavities (2)
Oil circuit (8), have on the floating pressure releasing valve core (6) connection left chamber (5a) and right chamber room (5b's) to connect through hole (6a), institute
State to have on floating pressure releasing valve core (6) and stretch into right chamber room (5b) and can block the block head (6b) of oil return line (8) oil inlet, institute
Stating to be additionally provided with to act on floating pressure releasing valve core (6) in right chamber room (5b) makes block head (6b) depart from oil return line (8) oil-feed
The elastic component (9) of mouth, the cylinder body (1) use split-type structural, and the cylinder body (1) includes front-bank rotor housing and rear-bank rotor housing, before described
There is cut-off portion in cylinder body, the hydraulic cavities (2) are located at the front portion in cut-off portion, and the rear portion in the cut-off portion has cavity one,
The rear-bank rotor housing is anterior have with the above-mentioned one-to-one cavity two of the location and shape of cavity one, the front-bank rotor housing and rear-bank rotor housing are consolidated
Fixed connection makes cavity one and cavity two is connected to form the pressure release valve pocket (5), described to cross fluid through-hole (7) and oil return line (8) equal position
In in cut-off portion.
11. hand-held hydraulic tools according to claim 10, it is characterised in that the diameter of the floating pressure releasing valve core (6)
Less than the internal diameter of pressure release valve pocket (5), at least there are two and pressure release valve pocket (5) shape on floating pressure releasing valve core (6) lateral surface
The butting section (6c) that shape and size match, the gap between two butting sections (6c) form the peace of installation sealing ring (11)
Tankage (6d), floating pressure releasing valve core (6) lateral surface also have raised stress close to the lateral surface that oil inlet passage (3) exports
Portion (6e).
12. hand-held hydraulic tools according to claim 11, it is characterised in that also have on the floating pressure releasing valve core (6)
The hydraulic oil from close oil inlet passage (3) outlet can be led to the forced section (6e) exports towards oil inlet passage (3) one by having
The Oil Guide passage (6f) of side.
13. hand-held hydraulic tools according to claim 10, it is characterised in that the floating pressure releasing valve core (6) is positioned at a left side
There is mounting hole (6g) inside one end of chamber (5a), steel ball (12) and back-moving spring are provided with the mounting hole (6g)
(13), the spring-force driven dual of the back-moving spring (13) makes steel ball (12) to block going out for oil inlet passage (3) on steel ball (12)
Mouthful.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610464575.8A CN105922203B (en) | 2016-06-21 | 2016-06-21 | A kind of hand-held hydraulic tools |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610464575.8A CN105922203B (en) | 2016-06-21 | 2016-06-21 | A kind of hand-held hydraulic tools |
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| CN105922203A CN105922203A (en) | 2016-09-07 |
| CN105922203B true CN105922203B (en) | 2018-04-10 |
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| CN201610464575.8A Active CN105922203B (en) | 2016-06-21 | 2016-06-21 | A kind of hand-held hydraulic tools |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106581879A (en) * | 2017-02-13 | 2017-04-26 | 杭州众铎消防科技有限公司 | Electric hydraulic device |
| CN110299679A (en) * | 2019-07-05 | 2019-10-01 | 中铁电气化局集团有限公司 | A kind of quick break wire device of pocket lithium electricity |
| CN116519235B (en) * | 2023-05-29 | 2023-11-14 | 佛山市顺德区佰旺金属制品有限公司 | Water heater relief valve and gas tightness check out test set thereof |
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| Publication number | Publication date |
|---|---|
| CN105922203A (en) | 2016-09-07 |
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Inventor after: Li Yubing Inventor after: Chen Ruifeng Inventor after: Han Langui Inventor after: Li Zhanmin Inventor after: An Xiaoxu Inventor after: Han Zhengtong Inventor after: Zhang Yi Inventor after: Zhou Zhenping Inventor before: Chen Ruifeng |
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Effective date of registration: 20180424 Address after: 100161 Fengtai intersection, Fengtai District, Beijing, Room 202, room 139 Patentee after: Zhongtie Electric Bureau Group Co., Ltd. Address before: Taizhou City, Zhejiang province 317605 Industrial Zone Shahe town Yuhuan County No. six Truman Patentee before: Chen Ruifeng |