CN109973461A - A kind of explosive-proof hydraulic executing agency - Google Patents
A kind of explosive-proof hydraulic executing agency Download PDFInfo
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- CN109973461A CN109973461A CN201910274036.1A CN201910274036A CN109973461A CN 109973461 A CN109973461 A CN 109973461A CN 201910274036 A CN201910274036 A CN 201910274036A CN 109973461 A CN109973461 A CN 109973461A
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- Prior art keywords
- cylinder body
- explosive
- executing agency
- proof
- molten metal
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1428—Cylinders
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Actuator (AREA)
Abstract
A kind of explosive-proof hydraulic executing agency, including cylinder body, piston rod, solenoid valve, explosion-proof shell, link block, lose heart, unloading port, it is characterized by: the cylinder body includes upper cylinder body, lower cylinder body, upper cylinder body has plunger shaft, oil discharge passage, the piston rod is slidably mounted in the plunger shaft, it is connected to the intercommunicating pore at the top of the plunger shaft, the oil outlet is connected at the top of the oil discharge passage, the lower curtate of the oil discharge passage is connected to the bottom of plunger shaft；The relevant regulations that explosive-proof hydraulic executing agency of the present invention meets in JB/T 10205-2010 " hydraulic cylinder technical conditions " are designed.The explosive-proof hydraulic executing agency that the present invention designs is mainly used for the stepless amount regulating system of reciprocating compressor, has the characteristics that small in size, easy for installation, running frequency is high, has explosion prevention function, is mass produced on the market；Meanwhile explosive-proof grade reaches Ex d IIB T4 Gb, stablizes security performance when improving work, increases physical life and maintenance time.
Description
Technical field
The present invention relates to a kind of oil cylinder equipment technical field more particularly to a kind of explosive-proof hydraulic executing agencies.
Background technique
Hydraulic actuating mechanism is that the directly proportional linear motion type of the pressure difference on power output and piston effective area and its both sides is held
Units, its function are that hydraulic energy is converted into mechanical energy, and the input quantity of hydraulic actuating mechanism is the flow and pressure of fluid,
Output is point-to-point speed and power, and the piston of hydraulic actuating mechanism can complete straight reciprocating motion, the straight-line displacement of output
It is limited, hydraulic actuating mechanism is the energy conversion device that hydraulic energy is converted to the mechanical energy of linear reciprocating motion.
In oil refining industry, the flow adjusting of reciprocating compressor is carried out, frequently with the mode of bypass reflux to match variation
Technical load.Bypass adjusts capable of the completing tolerance adjusting well of the task, but causes a large amount of wastes of electric energy.Reciprocating compression
Machine tolerance stepless regulating system solves the problems, such as this.It controls the movement of intake valve by intelligent Actuator, using prolonging
The mode of close later intake valve realizes the matching of compressor actual load and technical load.As special open 201084771,
Described in US005833209A etc., executing agency includes electromagnetic component, hydraulic unit and air inlet component.Execution unit also can refer to
Described in US20040091365A1 and US20150139835A1 etc..Oil cylinder currently on the market is when doing high energy movement in it
Portion can generate biggish pressure, have the risk of explosion in some cases, so that there are some potential safety problemss.
Summary of the invention
The object of the present invention is to provide a kind of explosive-proof hydraulic executing agencies, to improve the work of oil cylinder in the prior art
Efficiency and security and stability.Explosive-proof hydraulic executing agency of the present invention meets JB/T 10205-2010 " hydraulic cylinder technology item
Part " in relevant regulations be designed.
To achieve the goals above, the present invention provides a kind of explosive-proof hydraulic executing agency, including cylinder body 100, piston rod
200, solenoid valve 300, explosion-proof shell 400, link block 500, leakage port 600, unloading port 700, the cylinder body include upper cylinder body 111,
Lower cylinder body 121, upper cylinder body 111 have plunger shaft 113, oil discharge passage 114, and the piston rod 200 is slidably mounted in the work
It fills in chamber 113, the top of the plunger shaft 113 is connected to the intercommunicating pore 332, and the top of the oil discharge passage 114 is connected to institute
Oil outlet 112 is stated, the lower curtate of the oil discharge passage 114 is connected to the bottom of plunger shaft 113；The piston rod 200 is mounted on
In the plunger shaft 113 of cylinder body 111, upper cylinder body 111 is connect with lower cylinder body 121 by hex screw, has one to draw in lower cylinder body 121
Lead ring 122,122 sets of the guided rings form diversion trench 123, the diversion trench on the piston rod 200 and with the piston rod 200
123 one end is connected to a unloading port 700, and the other end is connected to the bottom of the plunger shaft 113；200 outside of piston rod
Face is equipped with annular groove 211, the inner sidewall composition oil seal area of the annular groove 211 and plunger shaft 113；
The lower section positioned at diversion trench 123 of the guided rings 122 is equipped with sealing ring 124, and the bottom of the lower cylinder body 121, which is equipped with, lets out
Port 600, leakage port 600 are located at the lower section of sealing ring 124；500 sets of the link block outsides in piston rod 200, the link block 500
Bottom be equipped with filler 511；Portion gas in air inlet component is flowed up from link block 500 and the gap of piston rod 200；It is close
Seal 124 limits the gas and moves up and it is discharged from leakage port 600；
300 component of solenoid valve includes high-speed switch valve 311, push rod 314, armature 315, cylinder 317, pressure cap 318, is opened at a high speed
Closing valve 311 includes spool 325 and valve chamber 326, and the both ends of the push rod 314 are provided with steel ball 321, and the steel ball 321 at both ends is all provided with
It is equipped with ball guide sleeve 312, one end ball guide sleeve 312 connects the open side of valve chamber 326, and side ball guide sleeve 312 is provided with lower ball
Seat 313, lower ball base 313 are fixed on straight pin 324 by O-ring seal 323；Cylinder 317 is set on the outside of the armature 315,
315 end of armature is provided with limited block 316, limited block 316 is connected by cross recessed countersunk head sscrew 322 with pressure cap 318, in institute
The outside for stating cylinder 317 is enclosed with coil block 318；When the spool 325 is to 326 medial movement of valve chamber, the height
Fast switch valve 311 separates fuel feed hole 331 and intercommunicating pore 332, and the spool 325 is to when moving on the outside of the valve chamber 326, the height
Fast switch valve 311 separates oil outlet 112 and intercommunicating pore 332.
Further, a kind of explosive-proof hydraulic executing agency, including cylinder body, piston rod 200, solenoid valve 300, explosion-proof shell 400,
Link block 500, leakage port 600, unloading port 700,
(1) the 111 preparation method specific steps of upper cylinder body in the cylinder body are as follows:
A1, molten metal processed, chemical component weight percentage in molten metal are as follows: C 0.35~0.42%, Mn 0.30~
0.60%, Si 0.20~0.45%, Cr 1.35~1.65%, Mo 0.15~0.25%, Al 0.70~1.10%, Cu trace~
0.30%, Ni trace~0.30%, P≤0.030%, S≤0.030%, surplus is aluminium and is inevitably mingled with matter；
When b1, molten metal are in 740~780 DEG C, take a certain amount of molten metal quickly, smoothly pour into preheated extruding
Casting mould type is intracavitary, quickly molds, and when formed punch is close to molten metal surface, is forced into 100~140 MPa, and pressure maintaining 40
Then~60 s move back mould, pickup, 111 blank of upper cylinder body；
C1, carry out quenched HRC28~35 to cylinder blank made of extrusion casint and be heat-treated, and to the plunger shaft of cylinder body 113 into
The processing of row surface carburization；
D1, phosphorating treatment, at normal temperature, by the blank in (c) step in the case where showing tremendous enthusiasm closure temperature is 280-320 DEG C, using phosphorus
Agent handles 15~20 min, workpiece Shot Blasting that treated；
(2) the preparation method specific steps of the piston rod 200 are as follows:
A2, molten metal processed, chemical component weight percentage in molten metal are as follows: C 0.8 ~ 0.9%, Mn 0.30~0.60%, Si
0.20 ~ 0.45%, Cr 3.80~4.40%, Mo 4.50~5.50%, W 5.50~6.75%, V 1.75~2.20%, Cu trace
~0.25%, Ni trace~0.25%, P≤0.030%, S≤0.030%, surplus is aluminium and is inevitably mingled with matter；
When b2, molten metal are in 850-890 DEG C, a certain amount of molten metal is taken quickly, smoothly to pour into preheated extruding casting
It is intracavitary to make mould type, quickly molds, when formed punch is close to molten metal surface, is forced into 100~140 MPa, and pressure maintaining 40~
Then 60 s move back mould, pickup, 200 blank of piston rod；
C2, blank is impregnated in hard alloy, so that hard alloy is adsorbed in blank surface with catalytic reduction method, be sintered with industry
Method, which adds to 1150~1200 DEG C, makes sintering cemented carbide firm connection on blank, is then ground to required size；
D2, phosphorating treatment, at normal temperature, by blank in the case where showing tremendous enthusiasm closure temperature is 540~560 DEG C, using bonderite processing 15
~20 min, workpiece Shot Blasting that treated
Further, a kind of explosive-proof hydraulic executing agency, the upper cylinder body 111 are provided with M6 threaded hole, and the M6 threaded hole is adopted
It is blocked with bolt and is polished after being welded.
Further, a kind of explosive-proof hydraulic executing agency, 300 high-speed switch valve 311 of solenoid valve are provided with spool 325
With valve chamber 326, spool 325 is arranged in valve chamber 326, and energization back valve core 325 moves left and right.
Further, a kind of explosive-proof hydraulic executing agency, the working frequency of 300 high-speed switch valve 311 of solenoid valve are 0
~30 Hz。
Further, a kind of explosive-proof hydraulic executing agency, the explosion-proof shell 400 are made using 2A12 aluminium alloy,
Treatment process: 1) black oxidation is carried out to surface, will deoil with the explosion-proof shell 400 after pickling in temperature is 126 ~ 142 DEG C of oxygen
55 ~ 75 min are impregnated in agent solution；2) antirust is coated with one layer of 204-1 antirust grease.
Further, a kind of explosive-proof hydraulic executing agency, the net volume in space is equipped with 22-26 in the explosion-proof shell 400
cm2, the filling heat-conductive silica gel in clear space in explosion-proof shell 400.
Further, a kind of explosive-proof hydraulic executing agency, the sealing ring 124 are to be combined using polytetrafluoroethylene (PTFE) with bronze
Material is made and is sealed.
Further, a kind of explosive-proof hydraulic executing agency, the temperature of the explosive-proof hydraulic executing agency in normal work
Range is -20 DEG C~80 DEG C.
Further, a kind of explosive-proof hydraulic executing agency, 511 material of filler that 500 bottom of link block is equipped with are glass
One of fine, carbon or bronze ptfe composite are a variety of.
The invention has the advantages that:
1, obtained explosive-proof hydraulic executing agency through the above technical solution, weight only has 10 kg, while realizing cylinder body blind hole
Bottom wall thickness is more than 3 mm, and load efficiency can reach 95.0%, substantial saved the consumption of the energy and reduces entreprise cost；
2, piston rod 200 and cylinder body fit clearance can reach 0.001 ~ 0.003 in the present invention, hence it is evident that be better than the prior art；
3, explosive-proof hydraulic executing agency of the present invention explosive-proof grade reaches Ex d IIB T4 Gb, stablizes safety when improving work
Can, increase physical life and maintenance time；
4, this explosive-proof hydraulic executing agency is mainly used for the stepless amount regulating system of reciprocating compressor, has small in size, installation
Conveniently, running frequency is high, has the characteristics that explosion prevention function, is mass produced on the market.
Detailed description of the invention
Fig. 1 is the overall structure cross-sectional view of apparatus of the present invention；
Fig. 2 is the key part structure schematic diagram of Fig. 1；
Fig. 3 is the key part structure schematic diagram of Fig. 1；
Fig. 4 is partial enlargement diagram at the A of Fig. 3；
Fig. 5 is partial enlargement diagram at the B of Fig. 1；
Fig. 6 is the key part structure schematic diagram of Fig. 1；
Fig. 7 is partial enlargement diagram at the C of Fig. 6；
Description of symbols: 100 cylinder bodies, 111 upper cylinder bodies, 112 oil outlets, 113 plunger shafts, 114 oil discharge passages, 121 lower cylinder bodies,
122 guided rings, 123 diversion trenches, 124 sealing rings, 200 piston rods, 211 annular grooves, 300 solenoid valves, 311 high-speed switch valves, 312
Ball guide sleeve, 313 lower ball bases, 314 push rods, 315 armature, 316 limited blocks, 317 cylinders, 318 coil blocks, 319 pressure caps, 321
Steel ball, 322 cross recessed countersunk head sscrews, 323 O-ring seals, 324 straight pins, 325 spools, 326 valve chambers, 331 fuel feed holes, 332
Intercommunicating pore, 400 explosion-proof shells, 500 link blocks, 511 fillers, 600 leakage ports, 700 unloading ports.
Specific embodiment
Embodiment 1
Explosive-proof hydraulic executing agency of the present invention meets the related rule in JB/T 10205-2010 " hydraulic cylinder technical conditions "
Surely it is designed.
To achieve the goals above, the present invention provides a kind of explosive-proof hydraulic executing agency, including cylinder body, piston rod 200, electricity
Magnet valve 300, explosion-proof shell 400, link block 500, leakage port 600, unloading port 700, the cylinder body include upper cylinder body 111, lower cylinder body
121, upper cylinder body 111 has plunger shaft 113, oil discharge passage 114, and the piston rod 200 is slidably mounted in the plunger shaft 113
Interior, the top of the plunger shaft 113 is connected to the intercommunicating pore 332, and the top of the oil discharge passage 114 is connected to the oil outlet
112, the lower curtate of the oil discharge passage 114 is connected to the bottom of plunger shaft 113；The piston rod 200 is mounted on upper cylinder body 111
In plunger shaft 113, upper cylinder body 111 is connect with lower cylinder body 121 by hex screw, has a guided rings 122 in lower cylinder body 121,
122 sets of the guided rings form diversion trench 123, one end of the diversion trench 123 on the piston rod 200 and with the piston rod 200
It is connected to a unloading port 700, the other end is connected to the bottom of the plunger shaft 113；200 lateral surface of piston rod is equipped with annular
The inner sidewall of slot 211, the annular groove 211 and plunger shaft 113 forms oil seal area；
The lower section positioned at diversion trench 123 of the guided rings 122 is equipped with sealing ring 124, and the bottom of the lower cylinder body 121, which is equipped with, lets out
Port 600, leakage port 600 are located at the lower section of sealing ring 124；500 sets of the link block outsides in piston rod 200, the link block 500
Bottom be equipped with filler 511；Portion gas in air inlet component is flowed up from link block 500 and the gap of piston rod 200；It is close
Seal 124 limits the gas and moves up and it is discharged from leakage port 600；
300 component of solenoid valve includes high-speed switch valve 311, push rod 314, armature 315, cylinder 317, pressure cap 318, is opened at a high speed
Closing valve 311 includes spool 325 and valve chamber 326, and the both ends of the push rod 314 are provided with steel ball 321, and the steel ball 321 at both ends is all provided with
It is equipped with ball guide sleeve 312, one end ball guide sleeve 312 connects the open side of valve chamber 326, and side ball guide sleeve 312 is provided with lower ball
Seat 313, lower ball base 313 are fixed on straight pin 324 by O-ring seal 323；Cylinder 317 is set on the outside of the armature 315,
315 end of armature is provided with limited block 316, limited block 316 is connected by cross recessed countersunk head sscrew 322 with pressure cap 318, in institute
The outside for stating cylinder 317 is enclosed with coil block 318；When the spool 325 is to 326 medial movement of valve chamber, the height
Fast switch valve 311 separates fuel feed hole 331 and intercommunicating pore 332, and the spool 325 is to when moving on the outside of the valve chamber 326, the height
Fast switch valve 311 separates oil outlet 112 and intercommunicating pore 332.
Further, a kind of explosive-proof hydraulic executing agency, including cylinder body, piston rod 200, solenoid valve 300, explosion-proof shell 400,
Link block 500, leakage port 600, unloading port 700,
(1) the 111 preparation method specific steps of upper cylinder body in the cylinder body are as follows:
A1, molten metal processed, chemical component weight percentage in molten metal are as follows: C 0.35%, Mn 0.60%, Si 0.35%, Cr
1.65%, Mo 0.2%, Al 0.9%, Cu trace, Ni trace, P≤0.030%, S≤0.030%, surplus are aluminium and can not
What is avoided is mingled with matter；
When b1, molten metal are in 760 DEG C, take a certain amount of molten metal quickly, smoothly pour into preheated extrusion casint mould
Tool type is intracavitary, quickly molds, and when formed punch is close to molten metal surface, is forced into 120 MPa, and 60 s of pressure maintaining, then move back mould,
Pickup, 111 blank of upper cylinder body；
C1, carry out quenched HRC28~35 to cylinder blank made of extrusion casint and be heat-treated, and to the plunger shaft of cylinder body 113 into
The processing of row surface carburization；
D1, phosphorating treatment, at normal temperature, by the blank in (c) step in the case where showing tremendous enthusiasm closure temperature is 300 DEG C, using bonderite
15 min are handled, workpiece Shot Blasting that treated；
(2) the preparation method specific steps of the piston rod 200 are as follows:
A2, molten metal processed, chemical component weight percentage in molten metal are as follows: C 0.8%, Mn 0.60%, Si 0.35%, Cr
4.4%, Mo 5.0%, W 5.5%, V 2.20%, Cu trace, Ni trace, P≤0.030%, S≤0.030%, surplus are aluminium
And inevitably it is mingled with matter；
When b2, molten metal are in 850 DEG C, take a certain amount of molten metal quickly, smoothly pour into preheated extrusion casint mould
Tool type is intracavitary, quickly molds, and when formed punch is close to molten metal surface, is forced into 120 MPa, and 40 s of pressure maintaining, then move back mould,
Pickup, 200 blank of piston rod；
C2, blank is impregnated in hard alloy, so that hard alloy is adsorbed in blank surface with catalytic reduction method, be sintered with industry
Method, which adds to 1150 DEG C, makes sintering cemented carbide firm connection on blank, is then ground to required size；
D2, phosphorating treatment by blank in the case where showing tremendous enthusiasm closure temperature is 560 DEG C, handle 20 min using bonderite at normal temperature,
Workpiece Shot Blasting that treated
Further, a kind of explosive-proof hydraulic executing agency, the upper cylinder body 111 are provided with M6 threaded hole, and the M6 threaded hole is adopted
It is blocked with bolt and is polished after being welded.
Further, a kind of explosive-proof hydraulic executing agency, 300 high-speed switch valve 311 of solenoid valve are provided with spool 325
With valve chamber 326, spool 325 is arranged in valve chamber 326, and energization back valve core 325 moves left and right.
Further, the working frequency of a kind of explosive-proof hydraulic executing agency, 300 high-speed switch valve 311 of solenoid valve is
30 Hz。
Further, a kind of explosive-proof hydraulic executing agency, the explosion-proof shell 400 are made using 2A12 aluminium alloy,
Treatment process: 1) black oxidation is carried out to surface, will deoil with the explosion-proof shell 400 after pickling in temperature is 134 DEG C of oxidant
55 min are impregnated in solution；2) antirust is coated with one layer of 204-1 antirust grease.
Further, a kind of explosive-proof hydraulic executing agency, the net volume in space is 26 cm in the explosion-proof shell 4002,
Filling heat-conductive silica gel in clear space in explosion-proof shell 400.
Further, a kind of explosive-proof hydraulic executing agency, the sealing ring 124 are to be combined using polytetrafluoroethylene (PTFE) with bronze
Material is made and is sealed.
Further, a kind of explosive-proof hydraulic executing agency, the temperature of the explosive-proof hydraulic executing agency in normal work
Range is 80 DEG C.
Further, a kind of explosive-proof hydraulic executing agency, 511 material of filler that 500 bottom of link block is equipped with are blueness
Copper ptfe composite.
Embodiment 2
Remaining is specifically the same as embodiment 1
A kind of explosive-proof hydraulic executing agency, including cylinder body, piston rod 200, solenoid valve 300, explosion-proof shell 400, link block 500, let out
Port 600, unloading port 700,
(1) the 111 preparation method specific steps of upper cylinder body in the cylinder body are as follows:
A1, molten metal processed, chemical component weight percentage in molten metal are as follows: C 0.42%, Mn 0.30%, Si 0.20%, Cr
1.50%, Mo 0.25%, Al 0.70%, Cu 0.15%, Ni 0.15%, P≤0.030%, S≤0.030%, surplus be aluminium and
Inevitably it is mingled with matter；
When b1, molten metal are in 740 DEG C, take a certain amount of molten metal quickly, smoothly pour into preheated extrusion casint mould
Tool type is intracavitary, quickly molds, and when formed punch is close to molten metal surface, is forced into 140 MPa, and 50 s of pressure maintaining, then move back mould,
Pickup, 111 blank of upper cylinder body；
C1, carry out quenched HRC28~35 to cylinder blank made of extrusion casint and be heat-treated, and to the plunger shaft of cylinder body 113 into
The processing of row surface carburization；
D1, phosphorating treatment, at normal temperature, by the blank in (c) step in the case where showing tremendous enthusiasm closure temperature is 320 DEG C, using bonderite
20 min are handled, workpiece Shot Blasting that treated；
(2) the preparation method specific steps of the piston rod 200 are as follows:
A2, molten metal processed, chemical component weight percentage in molten metal are as follows: C 0.9%, Mn 0.45%, Si 0.20%, Cr
3.80%, Mo 5.50%, W 6.75%, V 2.00%, Cu 0.25%, Ni 0.25%, P≤0.030%, S≤0.030%, surplus
For aluminium and inevitably it is mingled with matter；
When b2, molten metal are in 870 DEG C, take a certain amount of molten metal quickly, smoothly pour into preheated extrusion casint mould
Tool type is intracavitary, quickly molds, and when formed punch is close to molten metal surface, is forced into 100 MPa, and 60 s of pressure maintaining, then move back mould,
Pickup, 200 blank of piston rod；
C2, blank is impregnated in hard alloy, so that hard alloy is adsorbed in blank surface with catalytic reduction method, be sintered with industry
Method, which adds to 1200 DEG C, makes sintering cemented carbide firm connection on blank, is then ground to required size；
D2, phosphorating treatment by blank in the case where showing tremendous enthusiasm closure temperature is 550 DEG C, handle 15 min using bonderite at normal temperature,
Workpiece Shot Blasting that treated
Further, a kind of explosive-proof hydraulic executing agency, the upper cylinder body 111 are provided with M6 threaded hole, and the M6 threaded hole is adopted
It is blocked with bolt and is polished after being welded.
Further, a kind of explosive-proof hydraulic executing agency, 300 high-speed switch valve 311 of solenoid valve are provided with spool 325
With valve chamber 326, spool 325 is arranged in valve chamber 326, and energization back valve core 325 moves left and right.
Further, a kind of explosive-proof hydraulic executing agency, the working frequency of 300 high-speed switch valve 311 of solenoid valve are 1
Hz。
Further, a kind of explosive-proof hydraulic executing agency, the explosion-proof shell 400 are made using 2A12 aluminium alloy,
Treatment process: 1) black oxidation is carried out to surface, will deoil with the explosion-proof shell 400 after pickling in temperature is 142 DEG C of oxidant
55 min are impregnated in solution；2) antirust is coated with one layer of 204-1 antirust grease.
Further, a kind of explosive-proof hydraulic executing agency, the net volume in space is 22 cm in the explosion-proof shell 4002,
Filling heat-conductive silica gel in clear space in explosion-proof shell 400.
Further, a kind of explosive-proof hydraulic executing agency, the sealing ring 124 are to be combined using polytetrafluoroethylene (PTFE) with bronze
Material is made and is sealed.
Further, a kind of explosive-proof hydraulic executing agency, the temperature of the explosive-proof hydraulic executing agency in normal work
Range is -20 DEG C.
Further, a kind of explosive-proof hydraulic executing agency, 511 material of filler that 500 bottom of link block is equipped with are glass
It is fine.
Embodiment 3
Remaining is specifically the same as embodiment 1
A kind of explosive-proof hydraulic executing agency, including cylinder body, piston rod 200, solenoid valve 300, explosion-proof shell 400, link block 500, let out
Port 600, unloading port 700,
(1) the 111 preparation method specific steps of upper cylinder body in the cylinder body are as follows:
A1, molten metal processed, chemical component weight percentage in molten metal are as follows: C 0.38%, Mn 0.45%, Si 0.45%, Cr
1.35%, Mo 0.15%, Al 1.10%, Cu 0.30%, Ni 0.30%, P≤0.030%, S≤0.030%, surplus be aluminium and
Inevitably it is mingled with matter；
When b1, molten metal are in 780 DEG C, take a certain amount of molten metal quickly, smoothly pour into preheated extrusion casint mould
Tool type is intracavitary, quickly molds, and when formed punch is close to molten metal surface, is forced into 100 MPa, and 40 s of pressure maintaining, then move back mould,
Pickup, 111 blank of upper cylinder body；
C1, carry out quenched HRC28~35 to cylinder blank made of extrusion casint and be heat-treated, and to the plunger shaft of cylinder body 113 into
The processing of row surface carburization；
D1, phosphorating treatment, at normal temperature, by the blank in (c) step in the case where showing tremendous enthusiasm closure temperature is 280 DEG C, using bonderite
18 min are handled, workpiece Shot Blasting that treated；
(2) the preparation method specific steps of the piston rod 200 are as follows:
A2, molten metal processed, chemical component weight percentage in molten metal are as follows: C 0.85%, Mn 0.30%, Si 0.45%, Cr
4.10%, Mo 4.50%, W 6.10%, V 1.75%, Cu 0.12%, Ni 0.12%, P≤0.030%, S≤0.030%, surplus
For aluminium and inevitably it is mingled with matter；
When b2, molten metal are in 890 DEG C, take a certain amount of molten metal quickly, smoothly pour into preheated extrusion casint mould
Tool type is intracavitary, quickly molds, and when formed punch is close to molten metal surface, is forced into 140 MPa, and 50 s of pressure maintaining, then move back mould,
Pickup, 200 blank of piston rod；
C2, blank is impregnated in hard alloy, so that hard alloy is adsorbed in blank surface with catalytic reduction method, be sintered with industry
Method, which adds to 1180 DEG C, makes sintering cemented carbide firm connection on blank, is then ground to required size；
D2, phosphorating treatment by blank in the case where showing tremendous enthusiasm closure temperature is 540 DEG C, handle 18 min using bonderite at normal temperature,
Workpiece Shot Blasting that treated
Further, a kind of explosive-proof hydraulic executing agency, the upper cylinder body 111 are provided with M6 threaded hole, and the M6 threaded hole is adopted
It is blocked with bolt and is polished after being welded.
Further, a kind of explosive-proof hydraulic executing agency, 300 high-speed switch valve 311 of solenoid valve are provided with spool 325
With valve chamber 326, spool 325 is arranged in valve chamber 326, and energization back valve core 325 moves left and right.
Further, the working frequency of a kind of explosive-proof hydraulic executing agency, 300 high-speed switch valve 311 of solenoid valve is
15 Hz。
Further, a kind of explosive-proof hydraulic executing agency, the explosion-proof shell 400 are made using 2A12 aluminium alloy,
Treatment process: 1) black oxidation is carried out to surface, will deoil with the explosion-proof shell 400 after pickling in temperature is 126 DEG C of oxidant
75 min are impregnated in solution；2) antirust is coated with one layer of 204-1 antirust grease.
Further, a kind of explosive-proof hydraulic executing agency, the net volume in space is equipped with 24 cm in the explosion-proof shell 4002,
The filling heat-conductive silica gel in clear space in explosion-proof shell 400.
Further, a kind of explosive-proof hydraulic executing agency, the sealing ring 124 are to be combined using polytetrafluoroethylene (PTFE) with bronze
Material is made and is sealed.
Further, a kind of explosive-proof hydraulic executing agency, the temperature of the explosive-proof hydraulic executing agency in normal work
Range is 50 DEG C.
Further, a kind of explosive-proof hydraulic executing agency, 511 material of filler that 500 bottom of link block is equipped with are glass
Fine and carbon composite material.
Comparative example 4
Remaining is specifically the same as embodiment 1
A kind of explosive-proof hydraulic executing agency, including cylinder body, piston rod 200, solenoid valve 300, explosion-proof shell 400, link block 500, let out
Port 600, unloading port 700,
(1) the 111 preparation method specific steps of upper cylinder body in the cylinder body are as follows:
A1, molten metal processed, chemical component weight percentage in molten metal are as follows: C 0.50%, Mn 0.10%, Si 0.60%, Cr
1.00%, Mo 0.50%, Al 0.20%, Cu 0.50%, Ni 0.50%, P 0.10%, S 0.10%, surplus is for aluminium and unavoidably
Be mingled with matter；
When b1, molten metal are in 650 DEG C, take a certain amount of molten metal quickly, smoothly pour into preheated extrusion casint mould
Tool type is intracavitary, quickly molds, and when formed punch is close to molten metal surface, is forced into 100~180 MPa, and 20 s of pressure maintaining, then
Move back mould, pickup, 111 blank of upper cylinder body；
C1, carry out quenched HRC28~35 to cylinder blank made of extrusion casint and be heat-treated, and to the plunger shaft of cylinder body 113 into
The processing of row surface carburization；
D1, phosphorating treatment, at normal temperature, by the blank in (c) step in the case where showing tremendous enthusiasm closure temperature is 350 DEG C, using bonderite
30 min are handled, workpiece Shot Blasting that treated；
(2) the preparation method specific steps of the piston rod 200 are as follows:
A2, molten metal processed, chemical component weight percentage in molten metal are as follows: C 1.50%, Mn 0.90%, Si 0.10%, Cr
2.50%, Mo 6.50%, W 1.20%, V 3.50%, Cu 0.50%, Ni 0.50%, P 0.10%, S 0.10%, surplus is for aluminium and not
It is evitable to be mingled with matter；
When b2, molten metal are in 1100 DEG C, take a certain amount of molten metal quickly, smoothly pour into preheated extrusion casint
It in mold cavity, quickly molds, when formed punch is close to molten metal surface, is forced into 100~80 MPa, and 100 s of pressure maintaining, so
Retreat mould, pickup, 200 blank of piston rod；
C2, blank is impregnated in hard alloy, so that hard alloy is adsorbed in blank surface with catalytic reduction method, be sintered with industry
Method, which adds to 900 DEG C, makes sintering cemented carbide firm connection on blank, is then ground to required size；
D2, phosphorating treatment by blank in the case where showing tremendous enthusiasm closure temperature is 600 DEG C, handle 5 min using bonderite at normal temperature,
Workpiece Shot Blasting that treated.
Further, a kind of explosive-proof hydraulic executing agency, the explosion-proof shell 400 are made using 2A12 aluminium alloy,
Treatment process: 1) black oxidation is carried out to surface, will deoil with the explosion-proof shell 400 after pickling in temperature is 160 DEG C of oxidant
30 min are impregnated in solution；2) antirust is coated with one layer of 204-1 antirust grease.
Further, a kind of explosive-proof hydraulic executing agency, the temperature of the explosive-proof hydraulic executing agency in normal work
Range is 100 DEG C.
The technical effect table specific as follows for obtaining apparatus of the present invention by embodiment:
Load efficiency: it was calculated according to the operation in 1 year of 2000KW reciprocating compressor work 8400 hours.
By upper table data it is found that the load efficiency of embodiment 1 reaches 95%, weight 10kg, the load effect of embodiment 2
It is 10.4 kg that rate, which reaches 92.5%, weight, and the load efficiency of embodiment 3 reaches 94.3%, weight 10.3kg, compares embodiment
2-3 and comparative example 1, the technical effect of embodiment 1 are the most significant.
The several points that should finally illustrate are: firstly, in the description of the present application, it should be noted that unless otherwise prescribed and
It limits, term " installation ", " connected ", " connection " shall be understood in a broad sense, can be mechanical connection or electrical connection, be also possible to two
Connection inside element, can be directly connected, and "upper", "lower", "left", "right" etc. are only used for indicating relative positional relationship, when
The absolute position for being described object changes, then relative positional relationship may change；
Secondly: the present invention discloses in embodiment attached drawing, relates only to the structure being related to the embodiment of the present disclosure, and other structures can
With reference to being commonly designed, under not conflict situations, the same embodiment of the present invention and different embodiments be can be combined with each other；
Last: the routine operation in operation of the present invention step is well known to those skilled in the art, herein without repeating.More than
Technical solution of the present invention is described in detail in the embodiment described, it should be understood that the foregoing is merely tools of the invention
Body embodiment, is not intended to restrict the invention, all any modifications made in spirit of the invention, supplement or similar side
Formula substitution etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of explosive-proof hydraulic executing agency, including cylinder body (100), piston rod (200), solenoid valve (300), explosion-proof shell (400),
Link block (500), leakage port (600), unloading port (700), it is characterised in that: the cylinder body includes upper cylinder body (111), lower cylinder body
(121), upper cylinder body (111) has plunger shaft (113), oil discharge passage (114), and the piston rod (200) is slidably mounted in
In the plunger shaft (113), it is connected to the intercommunicating pore (332) at the top of the plunger shaft (113), the oil discharge passage (114)
Top is connected to the oil outlet (112), and the lower curtate of the oil discharge passage (114) is connected to the bottom of plunger shaft (113)；It is described
Piston rod (200) is mounted in the plunger shaft (113) of upper cylinder body (111), and upper cylinder body (111) and lower cylinder body (121) pass through hexagonal
Screw connection, lower cylinder body (121) is interior to have a guided rings (122), which covers on the piston rod (200) simultaneously
Diversion trench (123) are formed with the piston rod (200), one end of the diversion trench (123) is connected to a unloading port (700), the other end
It is connected to the bottom of the plunger shaft (113)；Piston rod (200) lateral surface is equipped with annular groove (211), the annular groove
(211) oil seal area is formed with the inner sidewall of plunger shaft (113)；
The lower section positioned at diversion trench (123) of the guided rings (122) is equipped with sealing ring (124), the bottom of the lower cylinder body (121)
Portion is equipped with leakage port (600), and leakage port (600) is located at the lower section of sealing ring (124)；Link block (500) is covered in piston rod (200)
Outside, the bottom of the link block (500) is equipped with filler (511)；Portion gas in air inlet component from link block (500) and is lived
The gap of stopper rod (200) flows up；Sealing ring (124) limits the gas and moves up and it is discharged from leakage port (600)；
Solenoid valve (300) component includes high-speed switch valve (311), push rod (314), armature (315), cylinder (317), pressure cap
(318), high-speed switch valve (311) is provided with spool (325) and valve chamber (326), and the both ends of the push rod (314) are provided with steel ball
(321), the steel ball (321) at both ends is provided with ball guide sleeve (312), and one end ball guide sleeve (312) connection valve chamber (326) is opened
Mouth side, side ball guide sleeve (312) are provided with lower ball base (313), and lower ball base (313) is fixed on circle by O-ring seal (323)
On pin (324)；Cylinder (317) are set on the outside of the armature (315), armature (315) end is provided with limited block (316),
Limited block (316) is connected by cross recessed countersunk head sscrew (322) with pressure cap (318), is enclosed on the outside of the cylinder (317)
Coil block (318)；When the spool (325) Xiang Suoshu valve chamber (326) medial movement, the high-speed switch valve (311) every
Break fuel feed hole (331) and intercommunicating pore (332), when mobile on the outside of spool (325) the Xiang Suoshu valve chamber (326), the high speed is opened
Close valve (311) partition oil outlet (112) and intercommunicating pore (332).
2. a kind of explosive-proof hydraulic executing agency, including including cylinder body (100), piston rod (200), solenoid valve (300), explosion-proof shell
(400), link block (500), leakage port (600), unloading port (700), it is characterised in that:
(1) upper cylinder body (111) preparation method specific steps in the cylinder body are as follows:
A1, molten metal processed, chemical component weight percentage in molten metal are as follows: C 0.35~0.42%, Mn 0.30~
0.60%, Si 0.20~0.45%, Cr 1.35~1.65%, Mo 0.15~0.25%, Al 0.70~1.10%, Cu trace~
0.30%, Ni trace~0.30%, P≤0.03%, S≤0.03%, surplus is aluminium and is inevitably mingled with matter；
When b1, molten metal are in 740~780 DEG C, take a certain amount of molten metal quickly, smoothly pour into preheated extruding
Casting mould type is intracavitary, quickly molds, and when formed punch is close to molten metal surface, is forced into 100~140 MPa, and pressure maintaining 40
Then~60 s move back mould, pickup, 111 blank of upper cylinder body；
C1, carry out quenched HRC28~35 to cylinder blank made of extrusion casint and be heat-treated, and to the plunger shaft of cylinder body 113 into
The processing of row surface carburization；
D1, phosphorating treatment by the blank in (c1) step in the case where showing tremendous enthusiasm closure temperature is 280-320 DEG C, are used at normal temperature
Bonderite handles 15~20 min, workpiece Shot Blasting that treated；
(2) the preparation method specific steps of the piston rod (200) are as follows:
A2, molten metal processed, chemical component weight percentage in molten metal are as follows: C 0.8 ~ 0.9%, Mn 0.30~0.60%, Si
0.20 ~ 0.45%, Cr 3.80~4.40%, Mo 4.50~5.50%, W 5.50~6.75%, V 1.75~2.20%, Cu trace
~0.25%, Ni trace~0.25%, P≤0.03%, S≤0.03%, surplus is aluminium and is inevitably mingled with matter；
When b2, molten metal are in 850-890 DEG C, a certain amount of molten metal is taken quickly, smoothly to pour into preheated extruding casting
It is intracavitary to make mould type, quickly molds, when formed punch is close to molten metal surface, is forced into 100~140 MPa, and pressure maintaining 40~
Then 60 s move back mould, pickup, 200 blank of piston rod；
C2, (b2) blank is impregnated in hard alloy, so that hard alloy is adsorbed in blank surface with catalytic reduction method, with industry
Sintering process, which adds to 1150~1200 DEG C, makes sintering cemented carbide firm connection on blank, is then ground to required size；
D2, by step (c2) blank carry out phosphorating treatment, at normal temperature, by blank showing tremendous enthusiasm closure temperature be 540~560
At DEG C, 15~20 min, workpiece Shot Blasting that treated are handled using bonderite.
3. a kind of explosive-proof hydraulic executing agency according to claim 1 or 2, it is characterised in that: the upper cylinder body (111) sets
Be equipped with M6 threaded hole, the M6 threaded hole is blocked using bolt be welded after polish.
4. a kind of explosive-proof hydraulic executing agency according to claim 1, it is characterised in that: solenoid valve (300) high speed
Switch valve (311) is provided with spool (325) and valve chamber (326), and spool (325) setting is in valve chamber (326), energization back valve core
(325) it moves left and right.
5. a kind of explosive-proof hydraulic executing agency according to claim 1 or 4, it is characterised in that: the solenoid valve (300) is high
The working frequency of fast switch valve (311) is 0 ~ 30 Hz.
6. a kind of explosive-proof hydraulic executing agency according to claim 1, it is characterised in that: the explosion-proof shell (400) is to adopt
It is made with 2A12 aluminium alloy, carry out treatment process to surface: 1) black oxidation will deoil and the explosion-proof shell after pickling
(400) 55 ~ 75 min are impregnated in the oxidizing agent solution that temperature is 126 ~ 142 DEG C；2) antirust is coated with one layer of 204-1 antirust
Rouge.
7. a kind of explosive-proof hydraulic executing agency according to claim 1 or 6, it is characterised in that: in the explosion-proof shell (400)
The net volume in space is equipped with 22-26 cm2, the filling heat-conductive silica gel in explosion-proof shell (400) interior clear space.
8. a kind of explosive-proof hydraulic executing agency according to claim 1, it is characterised in that: the sealing ring (124) is to adopt
It is made and is sealed with bronze combined material with polytetrafluoroethylene (PTFE).
9. a kind of explosive-proof hydraulic executing agency according to claim 1 or 2, it is characterised in that: the explosive-proof hydraulic executes
The temperature range of mechanism in normal work is -20 DEG C~80 DEG C.
10. a kind of explosive-proof hydraulic executing agency according to claim 1, it is characterised in that: link block (500) bottom
Filler (511) material being equipped with is one of glass, carbon or bronze ptfe composite or a variety of.
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| CN201910274036.1A CN109973461B (en) | 2019-04-08 | 2019-04-08 | Explosion-proof hydraulic actuator |
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| CN201910274036.1A CN109973461B (en) | 2019-04-08 | 2019-04-08 | Explosion-proof hydraulic actuator |
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Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001153109A (en) * | 1999-11-26 | 2001-06-08 | Hitachi Constr Mach Co Ltd | Hydraulic cylinder |
| EP1316733A1 (en) * | 2001-11-30 | 2003-06-04 | Simeoni S.R.L. | Hydraulic piston-cylinder unit |
| CN2748679Y (en) * | 2004-12-09 | 2005-12-28 | 中日合资上海太平洋机电制造有限公司 | Explosion-proof device for hydraulic cylinder |
| CN201568404U (en) * | 2009-12-07 | 2010-09-01 | 湖北三江航天万山特种车辆有限公司 | Hydraulic pipeline two-way anti-explosion valve |
| CN201963996U (en) * | 2010-12-31 | 2011-09-07 | 中国航天科技集团公司第六研究院第十一研究所 | Dual-position three-way high-speed switching electromagnetic valve |
| CN202251222U (en) * | 2011-10-14 | 2012-05-30 | 沈阳矿山机械有限公司 | Anti-explosion hydrocylinder for tunnelling machine |
| CN202646234U (en) * | 2011-12-13 | 2013-01-02 | 信义超薄玻璃(东莞)有限公司 | Hydraulic current-limiting safe explosion-proof valve |
| CN102962425A (en) * | 2012-10-25 | 2013-03-13 | 安徽蓝博旺机械集团振邺机械有限公司 | Preparation method of oblique oil cylinder body |
| CN102965581A (en) * | 2012-10-25 | 2013-03-13 | 安徽蓝博旺机械集团精密液压件有限责任公司 | Preparation method of cylinder body of oil feed pump |
| CN103050218A (en) * | 2012-12-21 | 2013-04-17 | 浙江大学 | Parallel coil based high-response and high-thrust electromagnet |
| CN103410808A (en) * | 2013-07-17 | 2013-11-27 | 丽水中德石化设备有限公司 | Intrinsic safety type fire-proof and explosion-proof electro-hydraulic actuator and control method thereof |
| CN105821294A (en) * | 2016-03-29 | 2016-08-03 | 中原内配集团股份有限公司 | High-damping and high-performance alloy cylinder sleeve and preparation technology thereof |
| CN207777747U (en) * | 2017-12-29 | 2018-08-28 | 武汉理工大学 | A kind of pilot-operated type high-speed large-flow solenoid valve |
| CN208221243U (en) * | 2018-03-12 | 2018-12-11 | 洪寅生 | A kind of explosion-proof device for hydraulic cylinder of band anticorrosive Au spool by force |
| CN109185252A (en) * | 2018-10-19 | 2019-01-11 | 江西资生科技有限公司 | Stepless air adjusting mechanism and piston compressor |
-
2019
- 2019-04-08 CN CN201910274036.1A patent/CN109973461B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001153109A (en) * | 1999-11-26 | 2001-06-08 | Hitachi Constr Mach Co Ltd | Hydraulic cylinder |
| EP1316733A1 (en) * | 2001-11-30 | 2003-06-04 | Simeoni S.R.L. | Hydraulic piston-cylinder unit |
| CN2748679Y (en) * | 2004-12-09 | 2005-12-28 | 中日合资上海太平洋机电制造有限公司 | Explosion-proof device for hydraulic cylinder |
| CN201568404U (en) * | 2009-12-07 | 2010-09-01 | 湖北三江航天万山特种车辆有限公司 | Hydraulic pipeline two-way anti-explosion valve |
| CN201963996U (en) * | 2010-12-31 | 2011-09-07 | 中国航天科技集团公司第六研究院第十一研究所 | Dual-position three-way high-speed switching electromagnetic valve |
| CN202251222U (en) * | 2011-10-14 | 2012-05-30 | 沈阳矿山机械有限公司 | Anti-explosion hydrocylinder for tunnelling machine |
| CN202646234U (en) * | 2011-12-13 | 2013-01-02 | 信义超薄玻璃(东莞)有限公司 | Hydraulic current-limiting safe explosion-proof valve |
| CN102962425A (en) * | 2012-10-25 | 2013-03-13 | 安徽蓝博旺机械集团振邺机械有限公司 | Preparation method of oblique oil cylinder body |
| CN102965581A (en) * | 2012-10-25 | 2013-03-13 | 安徽蓝博旺机械集团精密液压件有限责任公司 | Preparation method of cylinder body of oil feed pump |
| CN103050218A (en) * | 2012-12-21 | 2013-04-17 | 浙江大学 | Parallel coil based high-response and high-thrust electromagnet |
| CN103410808A (en) * | 2013-07-17 | 2013-11-27 | 丽水中德石化设备有限公司 | Intrinsic safety type fire-proof and explosion-proof electro-hydraulic actuator and control method thereof |
| CN105821294A (en) * | 2016-03-29 | 2016-08-03 | 中原内配集团股份有限公司 | High-damping and high-performance alloy cylinder sleeve and preparation technology thereof |
| CN207777747U (en) * | 2017-12-29 | 2018-08-28 | 武汉理工大学 | A kind of pilot-operated type high-speed large-flow solenoid valve |
| CN208221243U (en) * | 2018-03-12 | 2018-12-11 | 洪寅生 | A kind of explosion-proof device for hydraulic cylinder of band anticorrosive Au spool by force |
| CN109185252A (en) * | 2018-10-19 | 2019-01-11 | 江西资生科技有限公司 | Stepless air adjusting mechanism and piston compressor |
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|---|---|
| CN109973461B (en) | 2020-08-04 |
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