CN104454780A - Oil cylinder with mechanical locking function and hydraulic system - Google Patents
Oil cylinder with mechanical locking function and hydraulic system Download PDFInfo
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- CN104454780A CN104454780A CN201410570461.2A CN201410570461A CN104454780A CN 104454780 A CN104454780 A CN 104454780A CN 201410570461 A CN201410570461 A CN 201410570461A CN 104454780 A CN104454780 A CN 104454780A
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- piston rod
- cylinder
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- 239000012530 fluid Substances 0.000 claims description 37
- 238000009434 installation Methods 0.000 claims description 9
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 5
- 230000006835 compression Effects 0.000 abstract description 4
- 238000007906 compression Methods 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 45
- 239000010720 hydraulic oil Substances 0.000 description 32
- 230000007423 decrease Effects 0.000 description 14
- 230000000694 effects Effects 0.000 description 4
- 230000003116 impacting effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000007373 indentation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000005483 Hooke's law Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- 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
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/26—Locking mechanisms
- F15B15/262—Locking mechanisms using friction, e.g. brake pads
-
- 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
- F15B15/20—Other details, e.g. assembly with regulating devices
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
An oil cylinder with the mechanical locking function comprises a cylinder barrel, a piston and a piston rod, wherein the piston is installed at the end, extending into the cylinder barrel, of the piston rod; the cylinder barrel is provided with a first end and a second end opposite to the first end; a rodless cavity is formed in the position, between the piston and the first end of the cylinder barrel, in the cylinder barrel; a rod cavity is formed in the position, between the piston and the second end of the cylinder barrel, in the cylinder barrel; a piston rod locking device is installed on the cylinder barrel in the radial direction of the cylinder barrel; the piston rod locking device comprises a sleeve, a locking pin and an elastic part; the sleeve is installed on the cylinder barrel in the radial direction of the cylinder barrel; the locking pin is installed in the sleeve and can slide along the sleeve; the first end of the locking pin penetrates through the cylinder barrel via the sleeve and extends into the rod cavity; the elastic part is installed in the sleeve and applies axial compression force to the second end of the locking pin; a locking groove is formed in the piston rod; when the piston rod extends out to enable the locking pin to align with the locking groove, the first end of the locking pin extends into the locking groove, so that the piston rod is locked at the extending-out position. The invention further provides a hydraulic system comprising the oil cylinder.
Description
Technical field
The present invention relates to technical field of hydraulic pressure, especially relate to and a kind ofly there is the oil cylinder of mechanical caging function and there is the hydraulic system of this oil cylinder.
Background technique
In the prior art, in order to keep the lift location of oil cylinder not decline, generally can increase hydraulic lock in hydraulic system, as shown in Figure 1, oil cylinder comprises cylinder head 10, cylinder barrel 20, piston 30, piston rod 40, guide sleeve 50 and cylinder cap 60.The first hydraulic fluid port 21 be communicated with rodless cavity is offered in one end of cylinder barrel 20, the second hydraulic fluid port 22 be communicated with rod chamber is offered at the other end of cylinder barrel 20, piston 30 is fixed on piston rod 40 by locking nut 31, move in cylinder barrel 20 under the promotion of oil pressure, cylinder cap 60 is located at the other end of cylinder barrel 20 away from cylinder head 10, arranges between the inwall that guide sleeve 50 is located at piston rod 40 and cylinder barrel 20 near cylinder cap 60.
During work, when hydraulic oil enters the rodless cavity in cylinder barrel 20 from the first hydraulic fluid port 21, promotion piston 30 and piston rod 40 move to the right, and the hydraulic oil in cylinder barrel 20 in rod chamber flows out from the second hydraulic fluid port 22, and piston rod 40 stretches out.When hydraulic oil enters the rod chamber in cylinder barrel 20 from the second hydraulic fluid port 22, promotion piston 30 and piston rod 40 move to the left, and the hydraulic oil in cylinder barrel 20 in rodless cavity flows out from the first hydraulic fluid port 21, and piston rod 40 shrinks.
When piston rod 40 reaches correct position and is loaded with load and needs to remain on this extended position, in order to ensure the invariant position of piston rod 40, be and ensure that the lift location of oil cylinder does not decline, prior art generally on the first hydraulic fluid port 21 connect a hydraulic lock 70 is set, first hydraulic fluid port 21 seals by hydraulic lock 70, cut off the path that the hydraulic oil in cylinder barrel 20 in rodless cavity discharges, make hydraulic oil can not flow out cylinder barrel 20 from the first hydraulic fluid port 21, thus reach the object ensureing that the lift location of oil cylinder does not decline.
But, keep the lift location of oil cylinder not decline by hydraulic lock 70 and have following deficiency, first: the sealing means of existing hydraulic lock 70 is mechanical seal, zero leakage can not be accomplished, thus when oil cylinder is in the working state needing to keep lift location, along with the prolongation of time, also have hydraulic oil and flow out from the first hydraulic fluid port 21, cause the decline of oil cylinder lift location.Second: although think that hydraulic oil cannot be compressed in the ordinary course of things, but in a practical situation, if oil cylinder stops, when needing to increase load to oil cylinder, hydraulic oil has certain decrement under an increased pressure, even if this just makes oil cylinder in oil tight situation, the lift location of oil cylinder still can decline.
Summary of the invention
The object of the present invention is to provide and a kind ofly have the oil cylinder of mechanical caging function and have its hydraulic system, it can be avoided because hydraulic fluid leak or the hydraulic oil problem that caused the lift location of oil cylinder to decline by compressing.
The embodiment of the present invention provides a kind of oil cylinder with mechanical caging function, comprise cylinder barrel, piston, and piston rod, described piston is arranged on one end that described piston rod stretches into cylinder barrel, described cylinder barrel has relative first end and the second end, between described piston and the first end of described cylinder barrel, rodless cavity is formed in described cylinder barrel, between described piston and the second end of described cylinder barrel, rod chamber is formed in described cylinder barrel, radial direction along cylinder barrel on described cylinder barrel is provided with piston rod locking device, described piston rod locking device comprises sleeve, lock pin and elastic component, described sleeve is arranged on described cylinder barrel along the radial direction of described cylinder barrel, described lock pin to be installed in described sleeve and can to slide along described sleeve, the first end of described lock pin passes described cylinder barrel and stretches in described rod chamber in described sleeve, described elastic component is installed in described sleeve and to the second end of described lock pin and applies axial pressing force, described piston rod is provided with lock groove, described piston rod extend out to and makes described lock pin and described lock groove on time, the first end of described lock pin stretches in described lock groove and makes described piston rod be locked in this extended position.
Further, described piston rod locking device also comprises screw mandrel peace panel seat body, the top of described sleeve is provided with tapped hole, described screw mandrel is provided with screw thread, described screw mandrel and described tapped hole screw-thread fit and be located in described tapped hole, described elastic component is housed in the cavity formed between the top of described lock pin and the top of described sleeve, and described dull and stereotyped pedestal to be housed in described sleeve and between the bottom of described screw mandrel and the top of described elastic component.
Further, described lock pin comprises the top body of rod and the bottom body of rod, and the diameter of the described top body of rod is greater than the diameter of the described bottom body of rod, and the diameter of the described top body of rod equals the internal diameter of described sleeve, and the diameter of the described bottom body of rod is less than the internal diameter of described sleeve.
Further, described piston rod locking device also comprises the locking guide sleeve of hollow, and described locking guide sleeve is positioned at described sleeve and is set on the body of rod of described bottom.
Further, the described bottom body of rod radially protrudes and is provided with projection, and the external diameter of described projection is greater than the internal diameter of described locking guide sleeve, and described projection is positioned at the top of described guide sleeve and can be resisted against the top of described locking guide sleeve.
Further, described cylinder barrel is provided with the first hydraulic fluid port be communicated with described rodless cavity, and described sleeve is provided with the second hydraulic fluid port, and described second hydraulic fluid port is communicated with described rod chamber by the cavity of described sleeve inner.
Further, the bottom of described lock pin is provided with central oil passage vertically, and the bottom of described lock pin is radially provided with the logical hydraulic fluid port be communicated with described central oil passage, and described second hydraulic fluid port is communicated with described rod chamber by described logical hydraulic fluid port and described central oil passage.
Further, the first end of described cylinder barrel is provided with cylinder head, second end of described cylinder barrel is provided with cylinder cap, described cylinder cap protrudes the installation sleeve being provided with hollow, the bottom of described sleeve is connected with described installation sleeve, be fixed with base plate in described installation sleeve, described base plate is provided with perforation, and the first end of described lock pin stretches in described rod chamber through described perforation.
Further, described piston rod is provided with lock sleeve, and described lock sleeve is fixed near described piston place on described piston rod, and described lock groove is located on described lock sleeve.
The embodiment of the present invention also provides a kind of hydraulic system, and described hydraulic system comprises the above-mentioned oil cylinder with mechanical caging function.
In the embodiment of the present invention, the piston rod of extended position is in by arranging piston rod locking device locking on the cylinder barrel of oil cylinder, prevent oil cylinder in the decline of lift location, hydraulic lock is set with the oil port at rodless cavity in prior art, bear load by the hydraulic oil in rodless cavity to compare, be mechanical lock fixed structure by piston rod locking device, become by lock pin to bear load but not hydraulic oil in rodless cavity is born, thus avoid the problems such as the leakage of hydraulic oil and hydraulic oil compression, reach the object keeping oil cylinder not decline in lift location.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to technological means of the present invention can be better understood, and can be implemented according to the content of specification, and can become apparent to allow above and other object of the present invention, feature and advantage, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, be described in detail as follows.
Accompanying drawing explanation
Fig. 1 is the structural representation of oil cylinder in prior art.
Fig. 2 is the structural representation of the oil cylinder in embodiments of the invention with mechanical caging function.
Fig. 3 is oil cylinder in Fig. 2 structural representation when remaining on locked position.
Fig. 4 is the partial enlargement structural representation in Fig. 3.
Embodiment
For further setting forth the present invention for the technological means reaching predetermined goal of the invention and take and effect, below in conjunction with accompanying drawing and preferred embodiment, it is as follows that the present invention is described in detail.
Fig. 2 is the structural representation of the oil cylinder in one embodiment of the present of invention with mechanical caging function, and as shown in Figure 2, this oil cylinder comprises cylinder head 100, cylinder barrel 200, cylinder cap 300, piston 400, piston rod 500, front earrings 600 and piston rod locking device 700.Piston 400 is arranged on one end that piston rod 500 stretches into cylinder barrel 200, cylinder barrel 200 has relative first end 201 and the second end 202, between piston 400 and the first end 201 of cylinder barrel 200, form rodless cavity 230 in cylinder barrel 200, in cylinder barrel 200, between piston 400 and the second end 202 of cylinder barrel 200, form rod chamber 240.Cylinder head 100 is fixed on the first end 201 of cylinder barrel 200, and cylinder head 100 can be welded on cylinder barrel 200, is locked on cylinder barrel 200 or makes one with cylinder barrel 200.Cylinder cap 300 is fixed on the second end 202 of cylinder barrel 200, and cylinder cap 300 can be welded on cylinder barrel 200, is locked on cylinder barrel 200 or makes one with cylinder barrel 200.The first end 201 of cylinder barrel 200 offers the first hydraulic fluid port 210 be communicated with rodless cavity 230, and the second end 202 of cylinder barrel 200 offers the second hydraulic fluid port 220 be communicated with rod chamber 240.Front earrings 600 is fixed on one end that piston rod 500 stretches out cylinder barrel 200.
Piston rod 500 is provided with lock groove 711, particularly, piston rod 500 is arranged with lock sleeve 710, and lock sleeve 710 is fixed on piston rod 500 near piston 400 position.Above-mentioned lock groove 711 is the groove formed on lock sleeve 710, but be not limited thereto, in other embodiments, lock sleeve 710 also can be the integrated component of piston rod 500, namely lock sleeve 710 is a part for piston rod 500, and lock groove 711 is the groove directly formed on piston rod 500.Lock sleeve 710 is formed with inclined-plane 712 on the end face away from piston 400.
Piston rod locking device 700 is arranged on cylinder barrel 200 along the radial direction of cylinder barrel 200, and piston rod locking device 700 closes on the second end 202 being arranged on cylinder barrel 200.Piston rod locking device 700 comprises sleeve 721, lock pin 722 and elastic component 726.Sleeve 721 is arranged on cylinder barrel 200 along the radial direction of cylinder barrel 200, lock pin 722 to be installed in sleeve 721 and can to slide up and down along sleeve 721, the first end (being bottom in figure) of lock pin 722 is passed down through cylinder barrel 200 and stretches in rod chamber 240 in sleeve 721, elastic component 726 is installed in sleeve 721 and to second end (being top in figure) of lock pin 722 and applies downward axial pressing force, puts in rod chamber 240 with backup lock pin 722.In the present embodiment, elastic component 726 is spring.
Fig. 3 is oil cylinder in Fig. 2 structural representation when remaining on locked position, Fig. 4 is the partial enlargement structural representation in Fig. 3, please join shown in Fig. 3 and Fig. 4 simultaneously, when hydraulic oil enters rodless cavity 230 from the first hydraulic fluid port 210, promote piston 400 to move to right, now piston rod 500 stretches out, when the lock sleeve 710 on piston rod 500 moves to right to lock pin 722 position, inclined-plane 712 on lock sleeve 710 end face extrudes lock pin 722, lock pin 722 is made to overcome the impacting force of elastic component 726 towards indentation in sleeve 721, when piston 400 continues to move to right, piston rod 500 continues to stretch out, make lock pin 722 and the lock groove 711 on piston rod 500 on time, lock pin 722 is under the impacting force of elastic component 726 promotes, the bottom of lock pin 722 is stretched in lock groove 711, lock pin 722 engages mutually with piston rod 500, piston rod locking device 700 latching ram bar 500, piston rod 500 is made to be locked in this extended position, piston rod 500 can not move to rodless cavity 230 direction under the effect of load, by the position of piston rod locking device 700 fixed piston rod 500, prevent oil cylinder in the decline of lift location, because piston rod locking device 700 is mechanical lock fixed structure, do not adopt existing hydraulic lock, the problem being caused the lift location of oil cylinder to decline by compressing because of hydraulic fluid leak or hydraulic oil can be avoided.
Further, piston rod locking device 700 also comprises the peaceful panel seat body 730 of screw mandrel 723, the top of sleeve 721 is provided with tapped hole 7211, screw mandrel 723 is provided with screw thread, screw mandrel 723 and tapped hole 7211 screw-thread fit and be located in tapped hole 7211, one end of screw mandrel 723 (bottom) is made to be positioned at sleeve 721, the other end (top) of screw mandrel 723 is positioned at outside sleeve 721, elastic component 726 is housed in the cavity formed between the top of lock pin 722 and the top of sleeve 721, dull and stereotyped pedestal 730 to be housed in sleeve 721 and between the bottom of screw mandrel 723 and the top of elastic component 726, dull and stereotyped pedestal 730 can make one for individual components or with screw mandrel 723, screw mandrel 723 stretches out top outside sleeve 721 also can mounting nuts 725, nut 725 is convenient to screw screw mandrel 723, by screwing screw mandrel 723, screw mandrel 723 can be regulated to stretch into length in sleeve 721, and promote the decrement that dull and stereotyped pedestal 730 moves to change elastic component 726, thus the impacting force of adjustable elastic part 726 easily.
Further, piston rod locking device 700 also comprises the locking guide sleeve 724 of hollow, locking guide sleeve 724 is positioned at sleeve 721, in the present embodiment, lock pin 722 comprises the top body of rod 7221 and the bottom body of rod 7222, the diameter of the top body of rod 7221 is greater than the diameter of the bottom body of rod 7222, the diameter of the top body of rod 7221 equals the internal diameter of sleeve 721, the diameter of the bottom body of rod 7222 is less than the internal diameter of sleeve 721, the inwall of sleeve 721 is close to by the top body of rod 7221, make lock pin 722 under the effect of oil pressure and elastic component 726, while sleeve 721 slides, can prevent again hydraulic oil from entering in the cavity at elastic component 726 place, locking guide sleeve 724 is set on the bottom body of rod 7222, leading role can be provided to sliding up and down of lock pin 722, stressed support can also be provided to during lock pin 722 lock piston bar 500.In addition, the bottom body of rod 7222 radially also protrudes and is provided with projection 727, the external diameter of projection 727 is greater than the internal diameter of locking guide sleeve 724, projection 727 is positioned at the top of guide sleeve 724 and can be resisted against the top of locking guide sleeve 724, by projection 727 and locking guide sleeve 724 against, the extreme length in rod chamber 240 is stretched in the bottom that can limit lock pin 722, avoids the bottom of lock pin 722 excessively stretch in rod chamber 240 and interfere with piston rod 500.
In the present embodiment, the second above-mentioned hydraulic fluid port 220 is opened on the sidewall of sleeve 721, and the second hydraulic fluid port 220 is communicated with the rod chamber 240 in cylinder barrel 200 by the cavity of sleeve 721 inside.Diameter due to the bottom body of rod 7222 of lock pin 722 is less than the diameter of the top body of rod 7221, thus between the bottom body of rod 7222 of lock pin 722 and the sidewall of sleeve 721 and locking guide sleeve 724, forms one be convenient to hydraulic oil and be injected into communicated cavity rod chamber 240 from the second hydraulic fluid port 220.For the ease of the flowing of hydraulic oil between the second hydraulic fluid port 220 and rod chamber 240, the bottom body of rod 7222 is provided with central oil passage 728 vertically, simultaneously the radial direction of the bottom body of rod 7222 is provided with logical hydraulic fluid port 729, second hydraulic fluid port 220 that is communicated with central oil passage 728 by leading to hydraulic fluid port 729 and central oil passage 728 is communicated with rod chamber 240.
In the present embodiment, cylinder cap 300 protrudes the installation sleeve 301 being provided with hollow, the bottom of sleeve 721 is connected with installation sleeve 301, base plate 302 is fixed with in installation sleeve 301, base plate 302 is provided with perforation (figure does not mark), the diameter of perforation equals the diameter of the bottom of lock pin 722, and the bottom of lock pin 722 is stretched in rod chamber 240 through perforation.By making hydraulic oil pass in and out rod chamber 240 from central oil passage 728, and the be forced through base plate 302 of lock pin 722 when lock piston bar 500 is passed to cylinder barrel 200, makes the end of lock pin 722 can bear larger coupling mechanism force.
During cylinder efficient, hydraulic oil is pressed into rodless cavity 230 from the first hydraulic fluid port 210, promote piston 400 to move to right, hydraulic oil in rod chamber 240 is discharged by the second hydraulic fluid port 220 by the cavity in sleeve 721, when lock groove 711 moves to immediately below lock pin 722, lock pin 722 can be pushed down in lock groove 711 in the effect of elastic component 726, by piston rod locking device 700 lock piston bar 500 at extended position, prevent oil cylinder in the decline of lift location, the active force that now load applies can be born by the hydraulic oil by lock pin 722 but not in rodless cavity 230, therefore can save the hydraulic lock of conventional hydraulic oil cylinder and pressurizer and the leakage rate of hydraulic oil need not be considered, better reach the object keeping lift height.
When piston rod 500 needs to retract, hydraulic oil enters rod chamber 240 from the second hydraulic fluid port 220, pressure now in rod chamber 240 is P, if the cross-section area of lock pin 722 is S, the elasticity coefficient of elastic component 726 is k, according to Hooke's law P × S=kx, wherein x is the amount of deformation of elastic component 726, along with the pressure P in rod chamber 240 constantly increases, then the deformation quantity of elastic component 726 also becomes large, therefore the hydraulic oil in rod chamber 240 can promote lock pin 722 compression elastic piece 726 and move upward, now lock pin 722 will automatically disengage in indentation sleeve 721 from lock groove 711, piston rod locking device 700 contacts the locking to piston rod 500, then hydraulic oil promotion piston 400 moves to left, piston rod 500 is retracted.
In sum, by arranging piston rod locking device on the cylinder barrel of oil cylinder, locking is in the piston rod of extended position, prevent oil cylinder in the decline of lift location, hydraulic lock is set with the oil port at rodless cavity in prior art, bear load by the hydraulic oil in rodless cavity to compare, because piston rod locking device is mechanical lock fixed structure, the hydraulic oil of load by spring bolt but not in rodless cavity is born, thus avoid the problems such as the leakage of hydraulic oil and hydraulic oil compression, reach the object keeping oil cylinder not decline in lift location.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be do not depart from technical solution of the present invention content, according to any simple modification that technical spirit of the present invention is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (10)
1. one kind has the oil cylinder of mechanical caging function, comprise cylinder barrel (200), piston (400), and piston rod (500), described piston (400) is arranged on one end that described piston rod (500) stretches into cylinder barrel (200), described cylinder barrel (200) has relative first end (201) and the second end (202), between described piston (400) and the first end (201) of described cylinder barrel (200), rodless cavity (230) is formed in described cylinder barrel (200), between described piston (400) and second end (202) of described cylinder barrel (200), rod chamber (240) is formed in described cylinder barrel (200), it is characterized in that: described cylinder barrel (200) is provided with piston rod locking device (700) along the radial direction of cylinder barrel (200), described piston rod locking device (700) comprises sleeve (721), lock pin (722) and elastic component (726), described sleeve (721) is arranged on described cylinder barrel (200) along the radial direction of described cylinder barrel (200), described lock pin (722) to be installed in described sleeve (721) and can to slide along described sleeve (721), the first end of described lock pin (722) passes described cylinder barrel (200) and stretches in described rod chamber (240) in described sleeve (721), described elastic component (726) is installed in described sleeve (721) and to the second end of described lock pin (722) and applies axial pressing force, described piston rod (500) is provided with lock groove (711), described piston rod (500) extend out to and makes described lock pin (722) and described lock groove (711) on time, the first end of described lock pin (722) stretches in described lock groove (711) and makes described piston rod (500) be locked in this extended position.
2. the oil cylinder with mechanical caging function according to claim 1, it is characterized in that: described piston rod locking device (700) also comprises the peaceful panel seat body (730) of screw mandrel (723), the top of described sleeve (721) is provided with tapped hole (7211), described screw mandrel (723) is provided with screw thread, described screw mandrel (723) and described tapped hole (7211) screw-thread fit and be located in described tapped hole (7211), described elastic component (726) is housed in the cavity formed between the top of described lock pin (722) and the top of described sleeve (721), described dull and stereotyped pedestal (730) to be housed in described sleeve (721) and to be positioned between the bottom of described screw mandrel (723) and the top of described elastic component (726).
3. the oil cylinder with mechanical caging function according to claim 1, it is characterized in that: described lock pin (722) comprises the top body of rod (7221) and the bottom body of rod (7222), the diameter on the described top body of rod (7221) is greater than the diameter of the described bottom body of rod (7222), the diameter on the described top body of rod (7221) equals the internal diameter of described sleeve (721), and the diameter of the described bottom body of rod (7222) is less than the internal diameter of described sleeve (721).
4. the oil cylinder with mechanical caging function according to claim 3, it is characterized in that: described piston rod locking device (700) also comprises the locking guide sleeve (724) of hollow, described locking guide sleeve (724) is positioned at described sleeve (721) and is set on the described bottom body of rod (7222).
5. the oil cylinder with mechanical caging function according to claim 4, it is characterized in that: the described bottom body of rod (7222) is radially protruded and is provided with projection (727), the external diameter of described projection (727) is greater than the internal diameter of described locking guide sleeve (724), and described projection (727) is positioned at the top of described locking guide sleeve (724) and can be resisted against the top of described locking guide sleeve (724).
6. the oil cylinder with mechanical caging function according to claim 1, it is characterized in that: described cylinder barrel (200) is provided with the first hydraulic fluid port (210) be communicated with described rodless cavity (230), described sleeve (721) is provided with the second hydraulic fluid port (220), and described second hydraulic fluid port (220) is communicated with described rod chamber (240) by the cavity that described sleeve (721) is inner.
7. the oil cylinder with mechanical caging function according to claim 6, it is characterized in that: the bottom of described lock pin (722) is provided with central oil passage (728) vertically, the bottom of described lock pin (722) is radially provided with the logical hydraulic fluid port (729) be communicated with described central oil passage (728), and described second hydraulic fluid port (220) is communicated with described rod chamber (240) by described logical hydraulic fluid port (729) and described central oil passage (728).
8. the oil cylinder with mechanical caging function according to claim 7, it is characterized in that: the first end (201) of described cylinder barrel (200) is provided with cylinder head (100), second end (202) of described cylinder barrel (200) is provided with cylinder cap (300), described cylinder cap (300) is upper protrudes the installation sleeve (301) being provided with hollow, the bottom of described sleeve (721) is connected with described installation sleeve (301), base plate (302) is fixed with in described installation sleeve (301), described base plate (302) is provided with perforation, the first end of described lock pin (722) stretches in described rod chamber (240) through described perforation.
9. the oil cylinder with mechanical caging function according to claim 1, it is characterized in that: described piston rod (500) is provided with lock sleeve (710), it is upper near described piston (400) place that described lock sleeve (710) is fixed on described piston rod (500), and described lock groove (711) is located on described lock sleeve (710).
10. a hydraulic system, is characterized in that: described hydraulic system comprises the oil cylinder with mechanical caging function as described in any one of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410570461.2A CN104454780A (en) | 2014-10-23 | 2014-10-23 | Oil cylinder with mechanical locking function and hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410570461.2A CN104454780A (en) | 2014-10-23 | 2014-10-23 | Oil cylinder with mechanical locking function and hydraulic system |
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| CN104454780A true CN104454780A (en) | 2015-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410570461.2A Pending CN104454780A (en) | 2014-10-23 | 2014-10-23 | Oil cylinder with mechanical locking function and hydraulic system |
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| CN105402203A (en) * | 2015-12-07 | 2016-03-16 | 郑州宇通重工有限公司 | Oil cylinder tail end automatic lockup valve and hydraulic oil cylinder with oil cylinder tail end automatic lockup valve |
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| CN106050793A (en) * | 2016-07-29 | 2016-10-26 | 泸州合成液压件有限公司 | External locking oil cylinder |
| CN106286466A (en) * | 2016-10-28 | 2017-01-04 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | The double rod of a kind of double acting just position, end mechanical locking oil cylinder |
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| CN106593998A (en) * | 2016-12-08 | 2017-04-26 | 泸州长江液压密封件有限公司 | Hydraulic cylinder capable of realizing self-locking through elastic part |
| CN107420371A (en) * | 2017-06-26 | 2017-12-01 | 泸州长江油缸制造有限公司 | The method for preventing automatic moving when hydraulic cylinder piston rod works |
| CN111113192A (en) * | 2020-01-21 | 2020-05-08 | 广东金玻智能装备有限公司 | Feeding device and glass edge grinding machine adopting same |
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| CN104879342B (en) * | 2015-06-16 | 2017-09-01 | 中国北方车辆研究所 | A kind of automobile back wheel hydraulic steering cylinder |
| CN104879342A (en) * | 2015-06-16 | 2015-09-02 | 中国北方车辆研究所 | Rear wheel steering hydraulic cylinder of automobile |
| CN105257619A (en) * | 2015-11-13 | 2016-01-20 | 湖南特力液压有限公司 | Hydraulic cylinder |
| CN105402203A (en) * | 2015-12-07 | 2016-03-16 | 郑州宇通重工有限公司 | Oil cylinder tail end automatic lockup valve and hydraulic oil cylinder with oil cylinder tail end automatic lockup valve |
| CN105735817B (en) * | 2016-03-02 | 2017-10-31 | 庆安集团有限公司 | A kind of gas-liquid mixed power drive unit with pooling feature |
| CN105735817A (en) * | 2016-03-02 | 2016-07-06 | 庆安集团有限公司 | Gas-liquid hybrid power driving device with buffer function |
| CN106050793A (en) * | 2016-07-29 | 2016-10-26 | 泸州合成液压件有限公司 | External locking oil cylinder |
| CN106286466A (en) * | 2016-10-28 | 2017-01-04 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | The double rod of a kind of double acting just position, end mechanical locking oil cylinder |
| CN106286466B (en) * | 2016-10-28 | 2018-02-23 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | Last position mechanical locking oil cylinder at the beginning of a kind of double rods of double acting |
| CN106593998A (en) * | 2016-12-08 | 2017-04-26 | 泸州长江液压密封件有限公司 | Hydraulic cylinder capable of realizing self-locking through elastic part |
| CN106593998B (en) * | 2016-12-08 | 2019-01-15 | 泸州长江液压密封件有限公司 | Self-locking hydraulic cylinder is realized by elastic component |
| CN106596144A (en) * | 2016-12-26 | 2017-04-26 | 北汽福田汽车股份有限公司 | Constraint component and shock absorber calibration device with the same |
| CN107420371A (en) * | 2017-06-26 | 2017-12-01 | 泸州长江油缸制造有限公司 | The method for preventing automatic moving when hydraulic cylinder piston rod works |
| CN107420371B (en) * | 2017-06-26 | 2019-07-16 | 泸州长江油缸制造有限公司 | The method of automatic moving when preventing hydraulic cylinder piston rod from working |
| CN111113192A (en) * | 2020-01-21 | 2020-05-08 | 广东金玻智能装备有限公司 | Feeding device and glass edge grinding machine adopting same |
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