CN108019396B - The hydraulic cylinder of non-welding structure - Google Patents
The hydraulic cylinder of non-welding structure Download PDFInfo
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- CN108019396B CN108019396B CN201711419770.XA CN201711419770A CN108019396B CN 108019396 B CN108019396 B CN 108019396B CN 201711419770 A CN201711419770 A CN 201711419770A CN 108019396 B CN108019396 B CN 108019396B
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- piston rod
- hydraulic cylinder
- mounting base
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Classifications
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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
- 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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- 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
- F15B15/1447—Pistons; Piston to piston rod assemblies
- F15B15/1452—Piston sealings
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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
- 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
- F15B15/1457—Piston rods
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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
- F15B2215/00—Fluid-actuated devices for displacing a member from one position to another
- F15B2215/30—Constructional details thereof
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
The hydraulic cylinder of non-welding structure, the material of steel part in hydraulic cylinder is high-intensitive structural steel, including cylinder barrel, piston in cylinder barrel is set, the piston rod fastened in cylinder barrel with piston bush is protruded into one end, it is used to support that piston rod is axially disposed and guided bearing seat in cylinder barrel is protruded into one end, the pedestal of cylinder barrel rear end is set and covers the mounting base on guide support seat, characterized by further comprising locking swivel nuts, described locking swivel nut one end is circumferentially stuck on cylinder barrel, the other end is locked with mounting base screw, guided bearing seat is pressed on cylinder barrel by mounting base along axial direction, the pedestal and cylinder barrel rear end snap-fit.The hydraulic cylinder of non-welding structure of the invention, in the structural steel using high intensity, under the premise of mitigating hydraulic cylinder overall weight, it avoids welding high-intensitive structural steel, the reliability and safety of oil cylinder production are improved, production cost is reduced, shortens the production cycle.
Description
Technical field
The present invention relates to a kind of hydraulic cylinder is related to, it is a kind of hydraulic cylinder of non-welding structure, belongs to hydraulic cylinder system
Make technical field.
Background technique
The hydraulic cylinder that uses both at home and abroad at present, the cylinder body of oil cylinder, the overwhelming majority are welding structure, but welding structure
Steel are mild steel, such as 20 steel, Q235 steel, Q345 steel, although these mild steel weldabilities are good, intensity is low, is
Required stress is born, relatively thick, such oil cylinder heaviness the wall thickness of cylinder barrel and the thickness design on chassis must be just obtained,
In fact, the fields such as all mechanical engineering vehicles, railway engineering vehicle, ship are intended to support system hydraulic cylinder light weight
Change.In order to realize the lightweight of hydraulic cylinder, just must using high-intensitive structural steel, as far as possible the cylinder barrel wall thickness of reduction cylinder body and
Chassis thickness, to reduce the weight of hydraulic cylinder.And high-intensitive most of structural steel is nonweldable, individual high-intensitive knots
Structure steel (such as 30CrMo), though have certain solderability, before welding must preheating, postwelding must keep the temperature, preheat with the complex process of heat preservation,
Time-consuming, at high cost, and cannot eliminate since welding defect causes the hidden danger of safety accident.From production cycle, manufacturing cost, peace
Consider entirely with reliability, high-tensile structural steel is not suitable for using welding structure.
Summary of the invention
The present invention provides a kind of hydraulic cylinder of non-welding structure, using high-intensitive structural steel, mitigates hydraulic cylinder
It under the premise of overall weight, avoids welding high-intensitive structural steel, improves the reliability and safety of oil cylinder production, drop
Low production cost shortens the production cycle.
In order to achieve the above objectives the technical solution adopted by the present invention is that:
The hydraulic cylinder of non-welding structure, the material of the steel part in hydraulic cylinder are high-intensitive structural steel, packet
Include cylinder barrel, the piston that is arranged in cylinder barrel, one end protrude into the piston rod fastened in cylinder barrel with piston bush, are used to support piston rod
Guided bearing seat that axially disposed and one end is protruded into cylinder barrel is arranged in the pedestal of cylinder barrel rear end and covers on guide support seat
Mounting base, it is characterised in that further include locking swivel nut, described locking swivel nut one end is circumferentially stuck on cylinder barrel, the other end with
Mounting base screw locks, and guided bearing seat is pressed on cylinder barrel by mounting base along axial direction, the pedestal and cylinder barrel rear end
Snap-fit.
Preferably, the mounting base has external screw thread close to one end of cylinder barrel, and the one end for locking swivel nut has and installation
The internal screw thread that the external screw thread of seat one end matches, the other end for locking swivel nut have the circumferentially arranged and interior clamping to protrusion convex
Ring is provided with circumferentially arranged positioning groove on the outer wall of cylinder barrel front end, is embedded with outer fixed retaining ring in the positioning groove, outside
Fixed retaining ring is stretched out from positioning groove resists clamping bulge loop, is stuck in locking swivel nut one end circumferentially on cylinder barrel.
Preferably, " guided bearing seat is pressed on cylinder barrel by mounting base along axial direction " refers to has on the guide support seat
There is baffle ring that is circumferentially arranged and outwardly protruding, the baffle ring is clipped between cylinder barrel front end face and mounting base rear end face, locking
Swivel nut is locked with mounting base screw, is pressed on mounting base on cylinder barrel front end face baffle ring along axial direction.
Preferably, the piston is locked on the piston rod, and on the front end face and piston rod of piston by being threadedly engaged
Circular orientation step surface use metal threaded locking glue locking at piston thread cooperation against, piston rod.
Preferably, " pedestal and cylinder barrel rear end snap-fit " refers to is provided on the inner wall of the cylinder barrel rear end
Circumferentially arranged locating slot is embedded with interior fixed retaining ring in the locating slot, and interior fixed retaining ring is stretched out from locating slot, institute
The one end for the pedestal stated, which is protruded into cylinder barrel and sealed with cylinder barrel, to be cooperated, and pedestal, which protrudes on one end of cylinder barrel, to be had and interior fixed retaining ring
The annular step surface of cooperation, ring-shaped step are against on front side of interior fixed retaining ring, make pedestal and the clamping of cylinder barrel rear end.
Preferably, end washer is clamped between pedestal and the rear end face of cylinder barrel, the part that pedestal stretches out cylinder barrel was equipped with along week
To the standard axial direction retaining ring of setting, end washer and standard shaft block ring are against standard axial direction retaining ring is embedded in base outer wall
In annular groove
Preferably, the outer fixed ring washer and interior fixed retaining ring are two valve split structures, and by strong between two valves
Power gluing knot.
Preferably, the piston rod front end is in spherical cap shape, and is set with pushing tow joint cap sleeve, the pushing tow joint
Cap sleeve and piston rod front end are mobilizable mating spherical surfaces.
Preferably, the part that the piston rod stretches out cylinder barrel is cased with dust-prevention protecting jacket, described dust-prevention protecting jacket one end
It fixes on the piston rod, the other end is fixed in mounting base, and pushing tow joint cap sleeve is located at the front side of dust-prevention protecting jacket.
Preferably, the material of the piston rod is 42CrMo, and the surface of piston rod has high-frequency quenching hard chromium layers, and high
Frequency quenches 30 μm of thickness of hard chromium layers, and the material of hardness HV900~HV1100, surface roughness Ra 0.2, the cylinder barrel are
40Cr, inner wall surface roughness Ra 0.4.
The beneficial effects of the present invention are:
1, the hydraulic cylinder of non-welding structure of the invention, the material of the steel part in hydraulic cylinder are high-intensitive
Structural steel, wherein piston is fastened with piston rod one end set, and guide type shoe seat is pressed on cylinder barrel by mounting base, and piston rod is logical
Guided bearing seat to be crossed axially to support, mounting base is connected and fixed with cylinder barrel by locking swivel nut, and pedestal sealing is clamped on cylinder barrel rear end,
The connection of each component is all made of the connection structure of separable assembled in hydraulic cylinder, does not use welding structure, is using high intensity
Structural steel under the premise of mitigating hydraulic cylinder overall weight, avoids welding high-intensitive structural steel, improves oil cylinder production
Reliability and safety.
2, mounting base and locking swivel nut are cooperatively connected by screw, and piston rod is connect with piston by being threadedly engaged, and are locked
Swivel nut and cylinder barrel by outer fixed retaining ring clamping, reservation and cylinder barrel by interior fixed retaining ring, end washer and standard axial direction clamping,
Keep the package assembly of hydraulic cylinder simple, assembling difficulty is smaller, and intensity is lower, reduces hydraulic cylinder production cost, shortens its life
Produce the period.
3, piston rod front end is in spherical cap shape, and mobilizable equipped with pushing tow joint cap sleeve, improves hydraulic cylinder support
The direction flexibility of stress, improves the practicability of hydraulic cylinder, can be widely used in mechanical engineering vehicle, railway engineering vehicle,
In the hydraulic support system in the fields such as ship.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the hydraulic cylinder of non-welding structure of the invention.
Fig. 2 is the enlarged diagram in Fig. 1 at A.
Fig. 3 is the structural schematic diagram of cylinder barrel.
Fig. 4 is the structural schematic diagram for locking swivel nut.
Fig. 5 is the structural schematic diagram of piston rod.
Specific embodiment
1 to 5 pair of the embodiment of the present invention elaborates with reference to the accompanying drawing.
The hydraulic cylinder of non-welding structure, the material of the steel part in hydraulic cylinder are high-intensitive structural steel, packet
Include cylinder barrel 1, the piston being arranged in cylinder barrel 12, one end protrude into cylinder barrel 1 with 2 sets of the piston piston rods 3 fastened, be used to support
Piston rod 3 is axially disposed and one end is protruded into cylinder barrel 1 guided bearing seat 4 is arranged in the pedestal 5 of 1 rear end of cylinder barrel and covers
Mounting base 6 on guide support seat 4, it is characterised in that further include locking swivel nut 7, described 7 one end of locking swivel nut is circumferentially blocked
On cylinder barrel 1, the other end is locked with 6 screw of mounting base, and guided bearing seat 4 is pressed on cylinder barrel 1 along axial direction by mounting base 6
On, the pedestal 5 and 1 rear end snap-fit of cylinder barrel.
As shown in Figure 1, piston 2 is locked in one end of piston rod 3 in hydraulic cylinder, piston rod 3 is axial by guide type shoe 4
To support, 6 sets of mounting base compress on guide type shoe 4, and by guide type shoe 4, and locking 7 one end of swivel nut is stuck on cylinder barrel 1, the other end
It is threadedly engaged locking with mounting base 6, hydraulic cylinder is fixedly mounted by mounting base 6, as common hydraulic cylinder, hydraulic oil
Rod chamber and rodless cavity in cylinder have oil passage, and between guide support seat 4 and piston rod 3, guide support seat 4
Between cylinder barrel 1, between cylinder barrel 1 and piston 2, between piston 2 and piston rod 3, between pedestal 5 and cylinder barrel 1 and guide support seat 4
It is respectively provided with sealing structure between mounting base 6, to guarantee the sealing performance of hydraulic cylinder, the material of the steel part in hydraulic cylinder
Matter is high-tensile structural steel, the wall thickness of cylinder barrel 1 and the thickness of pedestal 5 under the premise of proof strength, can be reduced, to mitigate liquid
The weight of compressing cylinder, and the connection of each component is all made of the connection structure of separable assembled in hydraulic cylinder, and welding is not used to tie
Structure can avoid welding high-intensitive structural steel, improve the reliability and safety of oil cylinder production.
Wherein, the mounting base 6 has external screw thread close to one end of cylinder barrel 1, and one end of locking swivel nut 7 has and installation
The internal screw thread that the external screw thread of 6 one end of seat matches, the other end of locking swivel nut 7 have the circumferentially arranged and interior clamping to protrusion
Bulge loop 71, is provided with circumferentially arranged positioning groove 1.1 on the outer wall of 1 front end of cylinder barrel, embedded with outer in the positioning groove 1.1
Fixed retaining ring 8, outer fixed retaining ring 8 is stretched out from positioning groove 1.1 resists clamping bulge loop 71, makes to lock 7 one end of swivel nut circumferentially
It is stuck on cylinder barrel 1.From figure 1 it appears that cylinder barrel 1 and locking swivel nut 7 pass through the outer fixed retaining ring 8 and card on 1 outer wall of cylinder barrel
Tight bulge loop 71 cooperates against and connects, and in alignment concavity slot 1.1, the material of outer fixed retaining ring 8 is the fixed retaining ring 8 in China and foreign countries
65Mn, material quenching heat treatment, upper and lower end face guarantee its flatness, by grinding in order to guarantee outer 8 energy of fixed retaining ring
Smoothly in insertion positioning groove 1.1, it sets outer fixed retaining ring 8 to the split structure of two valves, two valves are sequentially embedded positioning groove
In 1.1, bonding split can be carried out to two valves with seccotine to increase intensity.
Wherein, " guided bearing seat 4 is pressed on cylinder barrel 1 by mounting base 6 along axial direction " refers to the guide support seat 4
Upper to have baffle ring 41 that is circumferentially arranged and outwardly protruding, the baffle ring 41 is clipped in 1 front end face of cylinder barrel and 6 rear end face of mounting base
Between, locking swivel nut 7 is locked with 6 screw of mounting base, makes mounting base 6 that baffle ring 41 are pressed on 1 front end face of cylinder barrel along axial direction
On.As shown in Figure 1, baffle ring 41 is arranged between 6 rear end face of mounting base and the front end face of cylinder barrel 1, pass through the setting of baffle ring 41, edge
Axially position guided bearing seat 4 makes baffle ring 41 compress 1 front end face of cylinder barrel by the screw-threaded coupling of locking swivel nut 7 and mounting base 6,
Mounting base 6, guide support seat 4 and 1 three of cylinder barrel are fixed by the cooperation of locking swivel nut 7 and cylinder barrel 1 and mounting base 6 and connected
It connecing, connection structure is simple, and it is easy to assembly, it can effectively simplify the package assembly of oil cylinder.
Wherein, the piston 2 is locked on piston rod 3 by being threadedly engaged, and the front end face of piston 2 and piston rod 3
On circular orientation step surface 31 against, piston rod 3 and 2 place of being threadedly engaged of piston using metal threaded locking glue locking, piston
Bar 3 and the connection structure of piston 2 are simple, locking using locking at the place of being threadedly engaged, and piston rod 3 and piston 2 can be effectively prevent to send out
Life loosens, and improves bonding strength.
Wherein, " pedestal 5 and 1 rear end snap-fit of cylinder barrel " refers to is provided on the inner wall of 1 rear end of cylinder barrel
Circumferentially arranged locating slot 1.2, is embedded with interior fixed retaining ring 9 in the locating slot 1.2, and interior fixed retaining ring 9 is from locating slot
It is stretched out in 1.2, one end of the pedestal 5, which is protruded into cylinder barrel 1 and sealed with cylinder barrel 1, to be cooperated, and pedestal 5 protrudes into one end of cylinder barrel 1
It is upper that ring-shaped step 51 is against interior 9 front side of fixed retaining ring with the annular step surface 51 cooperated with interior fixed retaining ring 9, make pedestal 5 with
1 rear end clamping of cylinder barrel.
End washer 10 is clamped between pedestal 5 and the rear end face of cylinder barrel 1, pedestal 5 stretches out the part of cylinder barrel 1 equipped with circumferentially
The standard axial direction retaining ring 11 of setting, end washer 10 and standard shaft block ring 11 are against standard axial direction retaining ring 11 is embedded in pedestal 5
In the annular groove of outer wall.
As shown in Fig. 2, one end of pedestal 5 is extend into cylinder barrel 1, it is embedded in interior fixed retaining ring 9 on the inner wall of cylinder barrel 1, passes through
Ring-shaped step 51, against cooperation, pedestal 5 is located on cylinder barrel 1 with interior fixed retaining ring 9, wherein interior fixed retaining ring 9 is embedded in fixed
In the slot 1.2 of position, interior fixed 9 material of retaining ring is 65Mn, and material quenching heat treatment, upper and lower end face guarantees that it is flat by grinding
Face degree, in order to guarantee that interior fixed retaining ring 9 can be smoothly embedded in locating slot 1.2, inside and outside fixed retaining ring 9 is set as the split knot of two valves
Structure, two valves are sequentially embedded in locating slot 1.2, can carry out bonding split to two valves with seccotine to increase intensity.And in order to
Guarantee the structural stability between pedestal 5 and cylinder barrel 1, end washer 10 is clamped between pedestal 5 and the rear end face of cylinder barrel 1, leads to
The standard shaft block ring 11 on pedestal 5 is crossed, supports toward end washer 10, further pedestal 5 is clamped on cylinder barrel 1, improves pedestal 5
With the structural stability between cylinder barrel 1.Wherein standard axial direction retaining ring 11 is embedded in the annular groove of 5 outer wall of pedestal, standard axle
Also bonding spelling can be carried out to two valves with seccotine smoothly to install for two valve split structures with retaining ring 11 in order to increase intensity
It closes.
Wherein, 3 front end of piston rod is in spherical cap shape, and is set with pushing tow joint cap sleeve 12, and the pushing tow closes
Saving cap sleeve 12 and 3 front end of piston rod is mobilizable mating spherical surfaces, i.e. 12 opposing pistons bar of pushing tow joint cap sleeve, 3 central axis can
Certain angle is deflected along any direction, the direction flexibility of hydraulic cylinder support stress is improved, improves the practicability of hydraulic cylinder,
It can be widely used in the hydraulic support systems in fields such as mechanical engineering vehicle, railway engineering vehicle, ship.
Wherein, the part that the piston rod 3 stretches out cylinder barrel 1 is cased with dust-prevention protecting jacket 13, the dust-prevention protecting jacket 13
One end is fixed on piston rod 13, and the other end is fixed in mounting base 6, before pushing tow joint cap sleeve 12 is located at dust-prevention protecting jacket 13
Side.It prevents dust from entering the destruction caused in the sealing structure of piston rod 3 to sealing structure, and protects exposed piston rod 3 not
It is wounded by the grains of sand and rubble splashing.
Wherein, the material of the piston rod 3 is 42CrMo, and the surface of piston rod 3 has high-frequency quenching hard chromium layers, and high
Frequency quenches 30 μm of thickness of hard chromium layers, and the material of hardness HV900~HV1100, surface roughness Ra 0.2, the cylinder barrel 1 are
40Cr, inner wall surface roughness Ra 0.4.To increase the intensity of hydraulic cylinder, and guarantee the sealing structure in hydraulic cylinder and work
The contact sealing effect of stopper rod 3 and cylinder barrel 1, improves the use reliability of oil cylinder.
The advantages of hydraulic cylinder of above-described non-welding structure, is:
1, it using high-intensitive structural steel, under the premise of mitigating hydraulic cylinder overall weight, avoids to high-intensitive knot
Structure steel is welded, and the reliability and safety of oil cylinder production are improved.
2, the package assembly of hydraulic cylinder is simple, and assembling difficulty is smaller, and intensity is lower, reduces hydraulic cylinder production cost,
Shorten its production cycle.
3, the direction flexibility for improving hydraulic cylinder support stress, improves the practicability of hydraulic cylinder, can be widely used in
In the hydraulic support systems in fields such as mechanical engineering vehicle, railway engineering vehicle, ship.
4, structural stability is strong, high sealing reliability, and use reliability is high.
It is completely described in conjunction with technical solution of the attached drawing to the embodiment of the present invention above, it should be noted that described
Embodiment be only a part of the embodiments of the present invention.Based on the embodiments of the present invention, those of ordinary skill in the art exist
Every other embodiment obtained under the premise of creative work is not made, shall fall within the protection scope of the present invention.
Claims (8)
1. the hydraulic cylinder of non-welding structure, the material of the steel part in hydraulic cylinder is high-intensitive structural steel, including
Cylinder barrel (1), setting are protruded into cylinder barrel (1) in the piston (2) in cylinder barrel (1), one end covers the piston rod fastened with piston (2)
(3), it is used to support piston rod (3) is axially disposed and one end is protruded into cylinder barrel (1) guided bearing seat (4), is arranged in cylinder barrel
(1) pedestal (5) of rear end and the mounting base (6) on guide support seat (4) is covered, it is characterised in that it further include locking swivel nut (7),
Described locking swivel nut (7) one end is circumferentially stuck on cylinder barrel (1), and the other end is locked with mounting base (6) screw, mounting base
(6) guided bearing seat (4) is pressed on cylinder barrel (1) along axial direction, the pedestal (5) and cylinder barrel (1) rear end snap-fit；
The mounting base (6) has external screw thread close to the one end of cylinder barrel (1), and one end of locking swivel nut (7) has and mounting base
(6) internal screw thread that the external screw thread of one end matches, the other end of locking swivel nut (7) have the circumferentially arranged and interior card to protrusion
Tight bulge loop (71) is provided with circumferentially arranged positioning groove (1.1), the positioning groove on the outer wall of cylinder barrel (1) front end
(1.1) outer fixed retaining ring (8) is embedded in, outer fixed retaining ring (8) is stretched out from positioning groove (1.1) resists clamping bulge loop (71),
It is stuck in locking swivel nut (7) one end circumferentially on cylinder barrel (1)；
With baffle ring (41) that is circumferentially arranged and outwardly protruding, the baffle ring (41) folder on the guide support seat (4)
Between cylinder barrel (1) front end face and mounting base (6) rear end face, locking swivel nut (7) is locked with mounting base (6) screw, makes to pacify
Baffle ring (41) is pressed on cylinder barrel (1) front end face by dress seat (6) along axial direction.
2. the hydraulic cylinder of non-welding structure according to claim 1, it is characterised in that the piston (2) passes through screw thread
Cooperation is locked on piston rod (3), and the circular orientation step surface (31) on the front end face of piston (2) and piston rod (3) against,
Piston rod (3) is locking using metal threaded locking glue with piston (2) place of being threadedly engaged.
3. the hydraulic cylinder of non-welding structure according to claim 1, it is characterised in that " pedestal (5) and cylinder barrel
(1) rear end snap-fit " refers to be provided with circumferentially arranged locating slot (1.2) on the inner wall of described cylinder barrel (1) rear end, described
Locating slot (1.2) in be embedded with interior fixed retaining ring (9), and interior fixed retaining ring (9) is stretched out from the locating slot (1.2), the bottom
One end of seat (5), which is protruded into cylinder barrel (1) and sealed with cylinder barrel (1), to be cooperated, pedestal (5) protrude on one end of cylinder barrel (1) have with
The annular step surface (51) of interior fixed retaining ring (9) cooperation, ring-shaped step (51) are against on front side of interior fixed retaining ring (9), make pedestal (5)
With cylinder barrel (1) rear end clamping.
4. the hydraulic cylinder of non-welding structure according to claim 3, it is characterised in that the pedestal (5) and cylinder barrel
(1) it is clamped between rear end face end washer (10), the part that pedestal (5) stretches out cylinder barrel (1) is equipped with circumferentially arranged standard
Axial retaining ring (11), end washer (10) and standard shaft block ring (11) are against standard axial direction retaining ring (11) is embedded in pedestal (5)
In the annular groove of outer wall.
5. the hydraulic cylinder of non-welding structure according to claim 3, it is characterised in that the outer fixed retaining ring (8) and
Interior fixed retaining ring (9) is two valve split structures, and passes through strength gluing knot between two valves.
6. the hydraulic cylinder of non-welding structure according to claim 1, it is characterised in that described piston rod (3) front end is in
Spherical cap shape, and it is set with pushing tow joint cap sleeve (12), the pushing tow joint cap sleeve (12) is that can live with piston rod (3) front end
Dynamic mating spherical surfaces.
7. the hydraulic cylinder of non-welding structure according to claim 6, it is characterised in that the piston rod (3) stretches out cylinder
The part of cylinder (1) is cased with dust-prevention protecting jacket (13), and the dust-prevention protecting jacket (13) one end is fixed on piston rod (13), another
End is fixed on mounting base (6), and pushing tow joint cap sleeve (12) is located at the front side of dust-prevention protecting jacket (13).
8. the hydraulic cylinder of non-welding structure according to claim 1, it is characterised in that the material of the piston rod (3)
For 42CrMo, the surface of piston rod (3) has high-frequency quenching hard chromium layers, and 30 μm of the thickness of high-frequency quenching hard chromium layers, hardness
HV900~HV1100, surface roughness Ra 0.2, the material of the cylinder barrel (1) are 40Cr, inner wall surface roughness Ra 0.4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711419770.XA CN108019396B (en) | 2017-12-25 | 2017-12-25 | The hydraulic cylinder of non-welding structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711419770.XA CN108019396B (en) | 2017-12-25 | 2017-12-25 | The hydraulic cylinder of non-welding structure |
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| Publication Number | Publication Date |
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| CN108019396A CN108019396A (en) | 2018-05-11 |
| CN108019396B true CN108019396B (en) | 2019-11-08 |
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| CN108019396A (en) | 2018-05-11 |
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Effective date of registration: 20180509 Address after: 412001 Tianxin gate, Tianxin of Shi Feng District, Zhuzhou, Hunan Applicant after: Hunan Liancheng rail equipment Co., Ltd. Address before: 412001 Tianxin gate in Shi Feng District, Zhuzhou, Hunan Applicant before: Liancheng Group Vibration Absorber Co., Ltd., Zhuzhou |
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