CN202001424U - Forced grease lubrication straight stroke cylinder with adjustable stroke - Google Patents

Forced grease lubrication straight stroke cylinder with adjustable stroke Download PDF

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Publication number
CN202001424U
CN202001424U CN2011200804531U CN201120080453U CN202001424U CN 202001424 U CN202001424 U CN 202001424U CN 2011200804531 U CN2011200804531 U CN 2011200804531U CN 201120080453 U CN201120080453 U CN 201120080453U CN 202001424 U CN202001424 U CN 202001424U
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CN
China
Prior art keywords
cylinder
piston rod
screw
screw rod
stroke
Prior art date
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CN2011200804531U
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Chinese (zh)
Inventor
田东海
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大连万讯电力仪表有限公司
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Priority to CN2011200804531U priority Critical patent/CN202001424U/en
Application granted granted Critical
Publication of CN202001424U publication Critical patent/CN202001424U/en

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Abstract

The utility model discloses a forced grease lubrication straight stroke cylinder with an adjustable stroke, which comprises a matching pin bush, a pin bush positioning cover, an elastic pin, a handwheel, a left worm wheel, a lock screw, a positioning screw, a protective pipe, a left screw, a protective pipe bracket, a piston, a piston rod, a right screw, a cylinder barrel, a piston rod sleeve gasket, a screw guide key, a worm gear case, a screw guide sleeve, a right worm wheel, a gear motor, a worm shaft, a dustproof guide sleeve, a connecting pin, a screw dust ring, a connecting plate, a piston rod dust cover, a piston rod dust ring, a lock nut, a piston rod stop nut and a cylinder tail end cover, wherein the matching pin bush is positioned between the pin bush positioning cover and the connecting plate; the elastic pin is positioned in the holes at the head parts of the left and the right screws and the connecting plate; and the lock screw is positioned in the key groove of the screw guide sleeve. In the straight stroke cylinder, the manual or the electric stroke length of the cylinder is only limited by the strengths and the stability of the piston rod and the screws, and the straight stroke cylinder has wide adjusting range, numerous choosing mode and wide choosing range of the pneumatic stroke, and wide application range.

Description

The pressure grease lubrication straight journey cylinder that stroke is adjustable
Technical field
The utility model relates to the adjustable pressure grease lubrication straight journey cylinder of a kind of stroke.
Background technique
Up to the present, the cylinder that stroke is adjustable is confined to the extended position or the retracted position of piston rod are carried out the monotony adjusting, can not be manual; Or can be manual, but stroke be shorter.To manual cylinder, pay with worm drive because of the power screw of man-operated mechanism and to pay the axial position that all is positioned at the cylinder piston rod end, except that the base dimension of cylinder and man-operated mechanism itself, the shared size of guide element and moving element forms multiplication length with the increase of cylinder running length, (as the cylinder stroke 300mm that abroad has, length of installation is 1300mm; The stroke 50mm that has, length of installation 850mm), thereby restricted the manually application of cylinder under the big situation of stroke, on the other hand, up to the present, the lubricated of cylinder moving sealing position also adopts old mode, i.e. oil mist lubrication or lubricating grease freely lubricate, oil mist lubrication is subjected to the requirement of environmental protection and operating mode, reduces just day by day; Grease lubrication has then limited the without interruption of lubricating grease because of reasons such as the storage of lubricating grease or flowabilities, and what making motion sealing position lubricatedly can not get effective assurance, has retrained the raising of cylinder durability.
Summary of the invention
Provide a kind of possess manual or electronic performance, pressure grease lubrication straight journey cylinder that stroke is adjustable order of the present utility model.
The utility model is that the technological scheme that the above-mentioned order of realization ground is adopted is: the pressure grease lubrication straight journey cylinder that a kind of stroke is adjustable, comprise guide (1), guide location lid (2), resilient key (3), handwheel (4), left side worm gear (5), lock screw (6), positioning screwn (7), pillar (8), left side screw rod (9), pillar frame (10), piston (11), piston rod (12), right screw rod (13), cylinder barrel (14), rod seal cover (15), screw rod feather key (16), Worm gear case (17), screw rod guide sleeve (18), right worm gear (19), decelerator (20), worm shaft (21), dustproof guide pin bushing (22), connecting pin (23), screw rod dust ring (24), connecting plate (25), piston rod dust cover (26), piston rod dust ring (27), locking nut (28), piston rod stop nut (29) and cylinder tail end cover (30), guide (1) is positioned between guide location lid (2) and the connecting plate (25), resilient key (3) is arranged in the hole on left screw rod (9) and right screw rod (13) head and the connecting plate (25), lock screw (6) is positioned at the keyway of screw rod guide sleeve (18), handwheel (4) and decelerator (20) lay respectively at the two ends that Worm gear case (17) is gone up worm shaft (21), pillar (8) is positioned between the pillar frame (10) and screw rod guide sleeve (18) of cylinder barrel (14) both sides, left side screw rod (9) and right screw rod (13) are in Worm gear case (17), screw rod guide sleeve (18) and dustproof guide pin bushing (22) are installed in the both sides of the interior left screw rod (9) of Worm gear case (17) and last left worm gear (5) of right screw rod (13) and right worm gear (19) respectively, screw rod feather key (16) is installed in the interior keyway of screw rod guide sleeve (18), screw rod dust ring (24) is installed in the dustproof guide pin bushing (22), piston rod dust cover (26) is positioned at the worm gear case lid outside of piston rod (12) upper piston rod stuffing box gland (15) left end, and piston rod dust ring (27) is loaded in the piston rod dust cover (26).
Describedly have the identical pin-and-hole of diameter to having on the guide (1) with piston rod (12) head.
Described handwheel (4), left worm gear (5), positioning screwn (7), pillar (8), left screw rod (9), pillar frame (10), right screw rod (13), screw rod feather key (16), Worm gear case (17), screw rod guide sleeve (18), right worm gear (19), decelerator (20), worm shaft (21), dustproof guide pin bushing (22) and screw rod dust ring (24) constitute the lazy-tongs of cylinder.
The described connection position-limit mechanism that guide (1), guide location lid (2), resilient key (3), lock screw (6), connecting pin (23), connecting plate (25), locking nut (28), piston rod stop nut (29) is constituted cylinder.
Described worm shaft (21) has the opposite but two sections identical worm screw profiles of tooth of parameter of rotation direction.
Described locking nut (28) and piston rod stop nut (29) are positioned on the screw thread of piston rod head.
Described lazy-tongs be connected position-limit mechanism and can be arranged at the cylinder rear end.
Described cylinder tail end cover (30) can adopt main piston rod end cylinder head (31).
Described piston (11) front end connects main piston rod (32), and rear end auxiliary connection piston rod (35) forms the double piston-rod air cylinder structure.
The two ends of described cylinder barrel (14) can be installed lazy-tongs respectively and are connected position-limit mechanism.
Piston primary seal circle, piston auxiliary seal ring (36) are housed on the described piston (11), piston auxiliary seal ring (36) is the two way sealed circle, the opening of piston storage fat hole (37) or groove is towards the end that piston auxiliary seal ring (36) is housed, and piston storage fat hole (37) or groove communicate with sealing area between piston primary seal circle, the piston auxiliary seal ring (36) by intercommunicating pore.
Piston rod primary seal circle, piston rod auxiliary seal ring (38) are housed on the described rod seal cover (15), and piston rod auxiliary seal ring (38) is the two way sealed circle, is positioned at by cylinder rod chamber one side; Have rod seal cover storage fat hole (39) or groove on the rod seal cover (15), the opening of storage fat hole (39) or groove is towards cylinder rod chamber one end, and rod seal cover storage fat hole (39) or groove communicate with sealing area between piston rod primary seal circle, the piston rod auxiliary seal ring (38) by intercommunicating pore.
The pressure grease lubrication straight journey cylinder that the utility model stroke is adjustable has following advantage:
1. can give full play to fast and other some advantages of the pneumatic speed of cylinder, and possess manual or motor-assist function;
2. the manual or electronic running length of this cylinder only is subjected to the intensity and the stability limit thereof of piston rod and screw rod, and regulation range is big.
3. the selection mode and the range of choice of the pneumatic stroke of this cylinder are wide, and the difference of pneumatic stroke is closed down the impact that the position may occur, and just can avoid as long as the gas buffering is set in the pneumatic circuit of cylinder.
4. to the cylinder of each cylinder diameter, when stroke changed, as long as change piston rod length, the length dimension of adaptive screw rod and pillar got final product, and technology is simple, is easy in the production realize.
5. owing to adopted pressure grease lubrication mode, when the cylinder stroke strengthens, as long as the size of suitable regulating piston rod seal cover (perhaps rod seal end cap) and piston, make storage fat amount be able to suitable increase, just can overcome the defective in the present cylinder oil-free lubrication, keep the good lubrication of cylinder moving obturator, make cylinder be able to the non-maintaining use of better durability.
6. described air cylinder structure is big according to operating mode needs choice, and as to not needing the operating mode of adjustment stroke, as long as the cylinder piston club head is not adorned piston rod stop nut and two parts of locking nut, the matching thread appropriateness shortening of piston rod head gets final product; Stroke is required short cylinder, need not dispose decelerator, as long as the input of hand wheel torque is arranged; To the cylinder that stroke will be rectificated, can not adorn handwheel, have decelerator and get final product.
7. applied range.Single-piston rod as shown in Figure 1 can be manually or the electric linear-motion cylinder, is equipped with different installation accessoriess, can satisfy common needs stroke adjustment and possess manual or electronic operating mode.Lazy-tongs shown in Figure 4 are connected position-limit mechanism with it can be manually or the electric linear-motion cylinder at the double piston-rod at cylinder barrel rear portion, be equipped with different installation accessoriess and control unit, utilize its piston rod can stretch into the characteristic of the airtight straight dynamic load of chamber push-and-pull, automatically control occasion in open loop or closed loop, can satisfy the use of the direct-acting type valve of multiple conveying gas or liquid; Also can be used for generating, steel-making, petrochemical industry, cement etc. and have large-scale flue or air channel, need gate is grown Stroke Control, and possess the occasion of manual or electronic performance.Fig. 5, double piston-rod shown in Figure 6 can be manually or the electric linear-motion cylinder, are equipped with suitable installation accessories, can satisfy any requirement to stroke adjustment.
8. worm gear--the lazy-tongs and the two places worm and worm gear tooth engagement place transmission parameter of double nut twin-screw are identical owing to the single worm screw of employing is two, rotation direction is opposite, axial force on the worm shaft is cancelled each other, so manual or electronic load is little with the single worm drive of the single worm screw under the situation relatively.
Description of drawings
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Fig. 1 is the adjustable pressure grease lubrication straight journey cylinder basic structure sectional view of the utility model stroke.
Fig. 2 is the adjustable pressure grease lubrication straight journey cylinder of the utility model stroke, and the state when manual or electronic stroke is L1 cuts open attitude figure.
Fig. 3 is the adjustable pressure grease lubrication straight journey cylinder of the utility model stroke, after manual or electronic stroke is L1, and the state sectional view during pneumatic again LAP L2.
Fig. 4 is that the utility model connects main piston rod in piston nose, rear end auxiliary connection piston rod, lazy-tongs be connected the adjustable pressure grease lubrication straight journey air cylinder structure sectional view of double piston-rod stroke that position-limit mechanism places the cylinder barrel rear portion to form.
Fig. 5 is that the utility model is respectively adorned lazy-tongs and connected position-limit mechanism, the pressure grease lubrication straight journey air cylinder structure sectional view that the double piston-rod stroke of formation is adjustable at the two ends of cylinder barrel.
Fig. 6 is the state sectional view when each manual or electronic LAP L3 of connection position-limit mechanism at cylinder two ends and L4 among Fig. 5.
Among the figure: 1, to guide; 2, guide location lid; 3, resilient key; 4, handwheel; 5, left worm gear; 6, lock screw; 7, positioning screwn; 8, pillar; 9, left screw rod; 10, pillar frame piston; 11, piston; 12, piston rod; 13, right screw rod; 14, cylinder barrel; 15, rod seal cover; 16, screw rod feather key; 17, Worm gear case; 18, screw rod guide sleeve; 19, right worm gear; 20, decelerator; 21, worm shaft; 22, dustproof guide pin bushing; 23, connecting pin; 24, screw rod dust ring; 25, connecting plate; 26, piston rod dust cover; 27, piston rod dust ring; 28, locking nut; 29, piston rod stop nut; 30, cylinder tail end cover; 31, main piston rod end cylinder head; 32, main piston rod; 33, lazy-tongs; 34, connect position-limit mechanism; 35, sub-piston bar; 36, piston auxiliary seal ring; 37, piston storage fat hole; 38, piston rod auxiliary seal ring; 39, rod seal cover storage fat hole.
Embodiment
As Fig. 1, Fig. 2 and shown in Figure 3, the pressure grease lubrication straight journey cylinder that stroke is adjustable, comprise guide 1, the guide location covers 2, resilient key 3, handwheel 4, left side worm gear 5, lock screw 6, positioning screwn 7, pillar 8, left side screw rod 9, pillar frame 10, piston 11, piston rod 12, right screw rod 13, cylinder barrel 14, rod seal cover 15, screw rod feather key 16, Worm gear case 17, screw rod guide sleeve 18, right worm gear 19, decelerator 20, worm shaft 21, dustproof guide pin bushing 22, connecting pin 23, screw rod dust ring 24, connecting plate 25, piston rod dust cover 26, piston rod dust ring 27, locking nut 28, piston rod stop nut 29 and cylinder tail end cover 30, wherein, to guide 1, the guide location covers 2, resilient key 3, lock screw 6, connecting pin 23, connecting plate 25, locking nut 28, piston rod stop nut 29 constitutes the connection position-limit mechanism of cylinder, to having the identical pin-and-hole of diameter that has with piston rod 12 heads on the guide 1, this to guide 1 guide location cover 2 and connecting plate 25 between, can cover in 2 in the guide location around the axis of piston rod and rotate, resilient key 3 is arranged on screw head and the connecting plate 25 and the equidistant isodiametric hole of screw rod, be used for two screw rods are connected with connecting plate 25, lock screw 6 is positioned at the keyway of screw rod guide sleeve 18, can be by screw rod feather key 16 with the axially locking in screw rod guide sleeve 18 of two screw rods, when cylinder is in aerodynamic condition, connecting pin 23 is deposited in the pin that connects on the edges of boards and is deposited in the hole and (see arrow B indication among Fig. 2), and piston rod 12 can pass connecting plate 25 and to the free to-and-fro motion in the hole on the guide 1; When cylinder is in aerodynamic condition under the stroke adjustment, connecting pin 23 is deposited in the pin that connects on the edges of boards and is deposited in the hole, for prevent piston rod 12 repeatedly return impact the travelling backwards cause connecting plate 25 and two screw rods, positioning screwn 7 is unscrewed, and screw rod feather key 16 usefulness lock screws 6 are compressed, though adopt power screw or worm drive situation to get well, under the repeated stock condition, also must consider the steadiness of self-locking with self-locking performance; When manual or electronic, connecting pin 23 is taken out in the pin-and-hole that inserts guide 1 and piston rod head from depositing the hole, loading force on the piston rod is divided equally by two screw rods, and make piston rod 12 realize same moved further by connecting plate 25 and two screw rods, piston rod stop nut 29 and locking nut 28 are positioned on the screw thread of piston rod head, press the location positioning of piston rod withdrawal, to not needing the cylinder of stroke adjustment, need not piston rod stop nut and these two parts of locking nut, the also corresponding shortening of the screw thread of piston rod head; Handwheel 4, left side worm gear 5, positioning screwn 7, pillar 8, left side screw rod 9, pillar frame 10, right screw rod 13, screw rod feather key 16, Worm gear case 17, screw rod guide sleeve 18, right worm gear 19, decelerator 20, worm shaft 21, dustproof guide pin bushing 22 and screw rod dust ring 24 constitute the lazy-tongs of cylinder, it is identical to have dimensional parameters on the worm shaft 21, two sections worm screw profiles of tooth that rotation direction is opposite, two sections opposite purposes of hands of worm are to make the axial force that two worm gears import worm screw into to cancel out each other, to reduce the input torque on the worm shaft 21, equally, two worm gears all the other parameters except that rotation direction is opposite are identical, and in Worm gear case 17, be meshed with two sections worm tooths on the worm shaft 21 respectively, two screw rods are in Worm gear case 17, equidistantly be positioned at the both sides of cylinder, and it is parallel with cylinder, axially has the guiding keyway along it, screw flight also is that the identical rotation direction of parameter is opposite, and match with internal thread on the worm gear center hole respectively, two sides of worm gear are equipped with screw rod guide sleeve 18 and dustproof guide pin bushing 22 respectively on Worm gear case 17 interior two screw rods, in the keyway in the screw rod guide sleeve 18 screw rod feather key 16 is housed, with positioning screwn 7 with its axially locating, the effect of screw rod feather key 16 is rotations of constraint screw rod and allow it directly moving, in the dustproof guide pin bushing 22 screw rod dust ring 24 is housed, the two plays guiding and dustproof effect for screw rod jointly, pillar 8 is between the pillar frame 10 and screw rod guide sleeve 18 of cylinder barrel 14 both sides, protective pipe sleeve is on two screw rods, two screw rods are played the proofing dust and protecting effect, handwheel 4 and decelerator 20 lay respectively at two ends of worm shaft 21 on the Worm gear case 17, as the manual or electronic power source of cylinder, the cylinder stroke need not dispose decelerator in short-term; To long stroke cylinder, consider that worm geared velocity ratio is bigger, for reducing the manual work amount, the configuration decelerator is necessary; Piston rod dust cover 26 is positioned at the worm gear case lid outside of piston rod 12 upper piston rod stuffing box glands 15 left ends, piston rod dust ring 27 is loaded in the piston rod dust cover 26, and piston rod dust cover 26, piston rod dust ring 27, rod seal cover 15 and Sealing wherein become sealing, guiding, lubricated, the dust prevention system of piston rod with the guiding element mutual group.
Fig. 2 is the manual or electronic performance about the described cylinder of Fig. 1, when connecting pin 23 takes out in the pin-and-hole that inserts guide 1 and piston rod 12 heads from depositing the hole, utilize lazy-tongs to drag piston rod action, and establish and drag piston rod 12 distance L 1 that moves to left, δ is initial installation dimension Lo, see Fig. 3, under this situation, when connecting pin 23 is taken out, can realize the adjusting of cylinders retract stroke from the pin-and-hole to guide 1 and piston rod 12 heads, the pneumatic stroke of cylinder is: L2=Lo-L1, condition: Lo 〉=L1.
Fig. 4 does the basis with the described air cylinder structure of Fig. 1, with foregoing lazy-tongs 33 be connected position-limit mechanism 34 and be put into the cylinder rear portion, the cylinder tail end cover changes with main piston rod end cylinder head 31, the described single-piston rod of Fig. 1 is made into to connect main piston rod 32 and rear end auxiliary connection piston rod 35 in piston nose, the double piston-rod air cylinder structure that forms, this air cylinder structure can be manual or electronic, on the basis of realizing pressure grease lubrication, the stroke that stretches out to cylinder main piston rod 32 is regulated, the pneumatic stroke of cylinder also is: L=Lo-L1, condition: Lo 〉=L1.
Figure 5 shows that with the described air cylinder structure of Fig. 1 and do the basis, respectively adorn lazy-tongs and the situation that is connected position-limit mechanism at the two ends of cylinder barrel, in this case, the lazy-tongs at cylinder barrel two ends and connection position-limit mechanism are around 90 ° of layouts of the mutual deflection of cylinder-bore axis, see Fig. 5 and Fig. 6, its pneumatic stroke: L=Lo-L3-L4, condition: Lo 〉=L3+L4, the sphere of activities of main piston rod 32, sub-piston bar 35 and piston can be selected arbitrarily in the total travel scope.
As Fig. 1, Fig. 2 and Fig. 3, the working principle of the pressure grease lubrication straight journey cylinder that the utility model stroke is adjustable: 1, the aerodynamic condition of non-stroke adjustment cylinder (piston rod head does not have locking nut 28, piston rod stop nut 29): piston rod is pneumatic to be stretched out: pressurized gas enters the cylinder rodless cavity on piston 11 right sides from cylinder rodless cavity source of the gas mouth, this cavity pressure raises, and act on the piston right side, the gas in piston 11 left sides is discharged from cylinder rod chamber source of the gas mouth, this cavity pressure reduces, and piston and piston rod move to left and stretch out; The pneumatic withdrawal of piston rod: pressurized gas enters the cylinder rod chamber in piston 11 left sides from cylinder rod chamber source of the gas mouth, and this cavity pressure raises, and acts on the piston left side; The gas on piston 11 right sides is discharged from cylinder rodless cavity source of the gas mouth, and this cavity pressure reduces, the withdrawal that moves to right of piston and piston rod; When the cylinder rodless cavity is in high-pressure piston rod and stretches out, institute's lubricating grease that stores up while pressurized in the piston storage fat hole 37, pass through intercommunicating pore, fat is transferred to closed area between the auxilliary seal ring 36 of piston primary seal circle and piston, realize the pressure lubrication of piston, when the cylinder rod chamber is in the high-pressure piston rod withdrawal, institute's lubricating grease that stores up while pressurized in the rod seal cover storage fat hole 39, pass through intercommunicating pore, fat is transferred to closed area between the auxilliary seal ring 38 of piston rod primary seal circle and piston rod, realize the pressure lubrication of piston rod; 2, (piston rod head does not have locking nut 28 to non-stroke adjustment cylinder, piston rod stop nut 29) manual or motoring condition: the cylinder that stroke is short: (not having decelerator 20), manually handwheel 4 is by worm shaft 21, left side worm gear 5, right worm gear 19, left side screw rod 9, right screw rod 13, two resilient keys 3, connecting plate 25, make connecting plate 25 together with install on it to guide 1,2 reaches are covered in the guide location, until the pin-and-hole on the guide 1 is alignd with pin-and-hole on the piston rod 12, when piston rod 12 occurring around its rotational, cause pin-and-hole on the piston rod 12 with the time to angle of the pin-and-hole deflection on the guide 1, rotation is to guide 1, until the pin-and-hole alignment of the two; The cylinder that stroke is long: start decelerator 20, by with the above-mentioned manually same kind of drive, make the pin-and-hole on the guide 1 is alignd with pin-and-hole on the piston rod 12, align two holes when having any problem, with the mode manual alignment same with the short stroke cylinder, thereafter, to take out the hole of connecting pin 23 from connecting plate 25, insert be coaxial state to the pin-and-hole on pin-and-hole on the guide 1 and the piston rod 12, according to circumstances need manual or electronic again, piston rod 12 is stretched out or withdraw, after finishing the manual or electronic action of cylinder, connecting pin 23 taken out and puts back to the original position on the connecting plate 25, again with connecting plate 25 together with installation it on to guide 1, guide location covers that 2 usefulness are manual or electronic returns initial retracted position; 3, the aerodynamic condition of stroke adjustment cylinder, under this state, piston rod is pneumatic stretch out identical with withdrawal with the aerodynamic condition of non-stroke adjustment cylinder (piston rod head does not have locking nut 28, piston rod stop nut 29); 4, stroke adjustment process to the stroke adjustment cylinder: make earlier the pin-and-hole on the guide 1 is alignd with pin-and-hole on the piston rod 12 with aforementioned manner, thereafter, to take out the hole of connecting pin 23 from connecting plate 25, insert be coaxial state to the pin-and-hole on pin-and-hole on the guide 1 and the piston rod 12, according to circumstances need manual or electronic, make piston rod 12 move to the stop position of plan backhaul, again connecting pin 23 is taken out and puts back to the original position on the connecting plate 25, unscrew positioning screwn 7 and withdraw from 1mm, lock screw 6 is tightened, in addition piston rod stop nut 29 is adjusted to end face and fits guide 1, again locking nut 28 is tightened lockedly, in gas circuit, gas buffering is transferred to corresponding correct position, in the ensuing pneumatic action, just can realize that cylinder piston rod 12 has required in that the backhaul that mixes up the position is spacing.
Double piston-rod air cylinder structure shown in Figure 4, on each part basis shown in Figure 1, remove cylinder tail end cover 30, change with main piston rod end cylinder head 31, main piston rod 32 and sub-piston bar 35, working principle is: 1, the pneumatic withdrawal principle of stretching out of the aerodynamic condition of non-stroke adjustment cylinder (sub-piston bar 35 heads do not have locking nut 28 and piston rod stop nut 29) and Fig. 1, Fig. 2, single piston rod cylinder piston rod shown in Figure 3 is identical, and just two sides of piston 11 all have piston rod; 2, non-stroke adjustment cylinder (sub-piston bar 35 heads do not have locking nut 28 and piston rod stop nut 29) manually or the manual or motoring condition of motoring condition and Fig. 1, Fig. 2, single piston rod cylinder shown in Figure 3 identical, be manual or electronic object be sub-piston bar 35, the stroke adjustment process of double piston-rod stroke adjustment cylinder shown in Figure 4, with Fig. 1, Fig. 2 and shown in the adjusting of single piston rod cylinder piston rod identical, just the object of regulating is a sub-piston bar 35, and regulating the result is the overhang that has limited main piston rod 32.
Fig. 5, double piston-rod air cylinder structure shown in Figure 6, its pneumatic, manual or electronic and stroke adjustment process and Fig. 1, Fig. 2, Fig. 3, related content shown in Figure 4 are identical.
The pressure grease lubrication straight journey cylinder that stroke of the present utility model is adjustable, the front and rear cover of cylinder barrel and cylinder provides airtight space at piston two ends all the time, make piston under its two end pressures difference condition, drive piston rod and have to directly moving trend or the motion of the low end of pressure; Two screw rods of lazy-tongs assurance of the two worm gears of single worm screw--double nut twin-screw are all carried on a shoulder pole the load on the piston rod, and can move with piston rod is synchronously parallel; Connecting position-limit mechanism is used for the motion of manual or electronic output can be connected or throw off smoothly, and the stroke of piston rod is limited with the straight moving of piston rod; Seal lubrication mechanism provides sealing, guiding, the lubricating condition of persistency for the motion of especially long stroke cylinder piston of the motion of piston and piston rod and piston rod.

Claims (10)

1. pressure grease lubrication straight journey cylinder that stroke is adjustable, it is characterized in that: comprise guide (1), guide location lid (2), resilient key (3), handwheel (4), left side worm gear (5), lock screw (6), positioning screwn (7), pillar (8), left side screw rod (9), pillar frame (10), piston (11), piston rod (12), right screw rod (13), cylinder barrel (14), rod seal cover (15), screw rod feather key (16), Worm gear case (17), screw rod guide sleeve (18), right worm gear (19), decelerator (20), worm shaft (21), dustproof guide pin bushing (22), connecting pin (23), screw rod dust ring (24), connecting plate (25), piston rod dust cover (26), piston rod dust ring (27), locking nut (28), piston rod stop nut (29) and cylinder tail end cover (30), guide (1) is positioned between guide location lid (2) and the connecting plate (25), resilient key (3) is arranged in the hole on left screw rod (9) and right screw rod (13) head and the connecting plate (25), lock screw (6) is positioned at the keyway of screw rod guide sleeve (18), handwheel (4) and decelerator (20) lay respectively at the two ends that Worm gear case (17) is gone up worm shaft (21), pillar (8) is positioned between the pillar frame (10) and screw rod guide sleeve (18) of cylinder barrel (14) both sides, left side screw rod (9) and right screw rod (13) are in Worm gear case (17), screw rod guide sleeve (18) and dustproof guide pin bushing (22) are installed in the both sides of the interior left screw rod (9) of Worm gear case (17) and last left worm gear (5) of right screw rod (13) and right worm gear (19) respectively, screw rod feather key (16) is installed in the interior keyway of screw rod guide sleeve (18), screw rod dust ring (24) is installed in the dustproof guide pin bushing (22), piston rod dust cover (26) is positioned at the worm gear case lid outside of piston rod (12) upper piston rod stuffing box gland (15) left end, and piston rod dust ring (27) is loaded in the piston rod dust cover (26).
2. the pressure grease lubrication straight journey cylinder adjustable according to the described a kind of stroke of claim 1 is characterized in that: describedly have the identical pin-and-hole of diameter to having on the guide (1) with piston rod (12) head.
3. the pressure grease lubrication straight journey cylinder adjustable according to the described a kind of stroke of claim 1 is characterized in that: described handwheel (4), left worm gear (5), positioning screwn (7), pillar (8), left screw rod (9), pillar frame (10), right screw rod (13), screw rod feather key (16), Worm gear case (17), screw rod guide sleeve (18), right worm gear (19), decelerator (20), worm shaft (21), dustproof guide pin bushing (22) and screw rod dust ring (24) constitute the lazy-tongs of cylinder.
4. the pressure grease lubrication straight journey cylinder adjustable according to the described a kind of stroke of claim 1 is characterized in that: the described connection position-limit mechanism that guide (1), guide location lid (2), resilient key (3), lock screw (6), connecting pin (23), connecting plate (25), locking nut (28), piston rod stop nut (29) is constituted cylinder.
5. the pressure grease lubrication straight journey cylinder adjustable according to the described a kind of stroke of claim 1 is characterized in that: have the opposite but two sections identical worm screw profiles of tooth of parameter of rotation direction on the described worm shaft (21).
6. the pressure grease lubrication straight journey cylinder adjustable according to the described a kind of stroke of claim 1, it is characterized in that: described locking nut (28) and piston rod stop nut (29) are positioned on the screw thread of piston rod head.
7. according to claim 3 or the adjustable pressure grease lubrication straight journey cylinder of 4 described a kind of strokes, it is characterized in that: described lazy-tongs be connected position-limit mechanism and can be arranged at the cylinder rear end.
8. the pressure grease lubrication straight journey cylinder adjustable according to the described a kind of stroke of claim 1, it is characterized in that: described cylinder tail end cover (30) can adopt main piston rod end cylinder head (31).
9. the pressure grease lubrication straight journey cylinder adjustable according to the described a kind of stroke of claim 1 is characterized in that: described piston (11) front end connects main piston rod (32), and rear end auxiliary connection piston rod (35) forms the double piston-rod air cylinder structure.
10. the pressure grease lubrication straight journey cylinder adjustable according to the described a kind of stroke of claim 1, it is characterized in that: the two ends of described cylinder barrel (14) can be installed lazy-tongs respectively and are connected position-limit mechanism.
CN2011200804531U 2011-03-24 2011-03-24 Forced grease lubrication straight stroke cylinder with adjustable stroke CN202001424U (en)

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CN2011200804531U CN202001424U (en) 2011-03-24 2011-03-24 Forced grease lubrication straight stroke cylinder with adjustable stroke

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Application Number Priority Date Filing Date Title
CN2011200804531U CN202001424U (en) 2011-03-24 2011-03-24 Forced grease lubrication straight stroke cylinder with adjustable stroke

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CN202001424U true CN202001424U (en) 2011-10-05

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102207115A (en) * 2011-03-24 2011-10-05 大连万讯电力仪表有限公司 Travel-adjustable forced grease lubrication straight-travel cylinder
CN111043099A (en) * 2019-11-27 2020-04-21 北京航空航天大学 Symmetrical digital hydraulic cylinder

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102207115A (en) * 2011-03-24 2011-10-05 大连万讯电力仪表有限公司 Travel-adjustable forced grease lubrication straight-travel cylinder
CN102207115B (en) * 2011-03-24 2013-06-19 大连万讯电力仪表有限公司 Travel-adjustable forced grease lubrication straight-travel cylinder
CN111043099A (en) * 2019-11-27 2020-04-21 北京航空航天大学 Symmetrical digital hydraulic cylinder

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