CN201636259U - Adjustable hydraulic damper - Google Patents
Adjustable hydraulic damper Download PDFInfo
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- CN201636259U CN201636259U CN2010203018945U CN201020301894U CN201636259U CN 201636259 U CN201636259 U CN 201636259U CN 2010203018945 U CN2010203018945 U CN 2010203018945U CN 201020301894 U CN201020301894 U CN 201020301894U CN 201636259 U CN201636259 U CN 201636259U
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Abstract
The utility model discloses an adjustable hydraulic damper suitable for such locations as stream lines and provided with an adjustable damping size, which comprises an outer cylinder body, an inner cylinder body, a front cover arranged at the front end of the outer cylinder body, an elastic pressure accumulation body in the outer cylinder body and a piston at the front end of the inner cylinder body, wherein an oil storage cavity comprising the piston and the inner cylinder body is arranged in the outer cylinder body, the rest cavities in the outer cylinder body form an oil return cavity, and a return spring for resetting the piston is also arranged in the inner cylinder body; the inner cylinder body comprises a tubular inner cylinder sleeve and a seal cover rotationally arranged at the rear end of the inner cylinder sleeve; the inner cylinder sleeve is embedded in the rear section of the outer cylinder body; throttling oil passages which are respectively communicated with the oil storage cavity and the oil return cavity are arranged between the inner cylinder body and the outer cylinder body; and the size of the liquid flow cross section of each throttling oil passage is related to the rotation of the seal cover. Since the inner cylinder body adopts an independent structure, the adjustable hydraulic damper can be processed conveniently, and the processing precision is improved; and the seal cover and the inner cylinder sleeve are connected rotationally, so as to avoid the adjustment failure due to the expansion of the inner cylinder sleeve.
Description
Technical field
The utility model relates to a kind of hydraulic damping device, specifically relates to a kind of hydraulic damper of can regulate damping size.
Background technique
The general structure that adopts inside and outside two cylinder bodies that are set-located of existing hydraulic damper, piston is housed on inner cylinder body, be filled with fluid oil in its cylinder body, between interior outer cylinder body, be provided with the throttling oil circuit that can change liquid flow section size by the rotation inner cylinder body, when the piston rod pressurized on the piston, the fluid oil that piston promotes in the inner cylinder body flows out in the oil return cavity that enters in the outer cylinder body from the throttling oil circuit, rely on the damping function of throttling oil circuit liquid towards oil, make the stroke of piston rod be obstructed and underspeed, thereby play buffer function.By rotating inner cylinder body the liquid flow section of throttling oil circuit is changed, can change the damping size of liquid towards oil, thereby play the purpose of the cushioning effect of regulating damper.Because the madial wall of inner cylinder body need cooperate with piston, thereby it is very high to dimension precision requirement, need just can install and use through grinding, but its inner cylinder body of existing damper is a monolithic construction, be that front end is open-minded, and the rear end is sealed, thereby causes the interior sidewall surface processing difficulties of inner cylinder body, its machining accuracy to be difficult to guarantee.A kind of disclosed on Chinese patent literature " hydraulic damper ", its notification number is CN2121570U, form by outer cylinder body, inner cylinder body, piston, sealing and fixing device, adopt the recovery device of spring as piston, adopt the pilot valve and the interior exocoel of throttle orifice, fluid groove, eccentric grove and piston head to constitute the fluid loop system, because the inner cylinder body of this damper adopts monolithic construction equally, thereby can't avoid the problem of inner cylinder body processing difficulties.At present, also the someone attempts changing inner cylinder body into split-type structural, concrete structure is referring to accompanying drawing 1, the inner cylinder body 2 that is rotationally connected promptly is set in outer cylinder body 1, and inner cylinder body 2 is divided into the capping 22 of inner cylinder liner 21 and rear end, for ease of making and assembling, capping 22 is the ends that are embedded in inner cylinder liner 21 by plunging.Because inner cylinder liner can bear certain oil pressure when buffer is worked, thereby make inner cylinder liner produce the dilatating and deformable of trace, when if the piston rod of buffer is subjected to bigger impact force, inner cylinder liner bore moment, oil pressure can be very high, thereby make inner cylinder liner produce bigger dilatating and deformable, and then between inner cylinder liner and capping, produce bigger slit and cause high pressure oil to enter and leakage of oil, enter the gap that high pressure oil in the slit further supports big inner cylinder liner and capping, finally cause capping adjusting loosening and whole damper to be lost efficacy.
The model utility content
The purpose of this utility model is for the loosening easily problem of capping that solves existing adjustable hydraulic damper existing integrated type inner cylinder body processing difficulties and split type inner cylinder body, provides a kind of and adopts split type inner cylinder body, also can avoid because of the loosening adjustable hydraulic damper that lost efficacy of regulating between capping and the inner cylinder liner.
To achieve these goals, the utility model is by the following technical solutions: a kind of adjustable hydraulic damper, comprise outer cylinder body, inner cylinder body, be located at the protecgulum of outer cylinder body front end, be located at elasticity pressure accumulation body in the outer cylinder body and the piston of being located at the inner cylinder body front end, in outer cylinder body, constitute an oil storage cavity by piston and inner cylinder body, remaining cavity then constitutes the oil return cavity in the outer cylinder body, in oil storage cavity and oil return cavity, be filled with fluid oil, in inner cylinder body, also be provided with the Returnning spring that is used for piston reset, described inner cylinder body adopts and divides body structure, comprise the inner cylinder liner of tubulose and the capping of being located at the inner cylinder liner rear end rotationally, described inner cylinder liner is embedded in the outer cylinder body back segment, be provided with the throttling oil circuit that is communicated with oil storage cavity and oil return cavity respectively between inner cylinder body and outer cylinder body, the liquid flow section size of described throttling oil circuit is associated with the rotation angle of capping.Inner cylinder body of the present utility model is made up of the inner cylinder liner and the capping of tubulose, and the inner cylinder liner two ends are open-minded, thereby is convenient to the machining of its madial wall, helps guaranteeing the machining accuracy of madial wall, and then the precision that cooperates between raising and the piston.Simultaneously, the adjusting of throttling oil circuit liquid flow section size is associated with the rotation angle of capping, thereby, make between capping and the inner cylinder liner original embedded fit change rotatable assembling into, and inner cylinder liner is embedded in outer cylinder body so that it is fixed, like this, by rotating capping is the liquid flow section size of can regulate throttling oil circuit, therefore, when inner cylinder liner is subjected to oil pressure and produces outside dilatating and deformable, can't influence the relation of being rotatably assorted between itself and the capping, capping can continue normally to rotate to regulate the size of throttling oil circuit liquid flow section.
As preferably, described throttling oil circuit comprises is located at a center hole that is positioned at inner cylinder liner one side end face in the capping, on the circumferencial direction of the outer side surface that capping cooperates with inner cylinder liner, be provided with throttling groove, the cross section of throttling groove is from descending linear the successively decreasing of origin-to-destination, and the described starting point place that is sealed on throttling groove is provided with the radial direction through hole that is communicated with center hole; The outer side wall of described inner cylinder liner is provided with the axial spout that is communicated with the oil return cavity, and described throttling groove is communicated with spout by the throttle orifice of being located on the inner cylinder liner sidewall.Because the cross section of spout and throttle orifice is bigger than the maximum cross section at throttling groove starting point place, thereby, the cross section size of corresponding throttle orifice position promptly constitutes the size of the liquid flow section of whole throttling oil circuit on the throttling oil groove, and the cross section of throttling groove is descending linear successively decreasing from origin-to-destination, so when rotating capping, the size of above-mentioned liquid flow section also is linear decrease thereupon, thereby the damping of fluid oil by restriction the time correspondingly increased, and then realize the step-less adjustment of damping.
As preferably, the cross section of described throttling groove is a rectangle, or triangle, or semicircle, adopts the cross section of simple shape, thereby is convenient to the processing of throttling groove; The degree of depth of throttling groove is successively decreased from origin-to-destination is linear from deep to shallow, and the bottom of throttling groove joins at destination county and inner cylinder liner outer side surface slyness, is linear decrease so that guarantee the cross section size of throttling groove; The pairing central angle of the origin-to-destination of throttling groove is 150 °～300 °, thereby makes the length of throttling groove long as far as possible, and then helps improving the amplitude of accommodation and the degree of regulation of throttling groove cross section.
As preferably, the front end that is positioned at throttling groove on capping and outer side surface that inner cylinder liner cooperates is provided with seal ring, thereby can prevent between capping and the inner cylinder liner leakage of oil that causes because of wearing and tearing etc., reduces the requirement to the quality of fit of capping and inner cylinder liner simultaneously.
As preferably, between the middle part of described inner cylinder liner and the outer cylinder body interference fit, leave the space between its forward and backward two ends and the outer cylinder body.Thereby both can guarantee fixedlying connected between inner cylinder liner and the outer cylinder body, can shorten length of thread engagement between the two again, thereby reduce the grinding amount of inner cylinder liner outer side surface and outer cylinder body inner side surface, also help reducing requirement, and make things convenient for the assembling between inner cylinder body and the outer cylinder body the quality of fit between inner cylinder liner and the outer cylinder body.
As preferably, the inner side surface of described outer cylinder body rear end is provided with the step of closing in, and form a positioning hole, be positioned in the described capping on the outer end face of inner cylinder liner and extended axially locating journal, between the positioning hole of locating journal and step for being rotatably assorted, the outer side surface of described locating journal is provided with the restraining groove of annular, radially is provided with the stop screw of screens in restraining groove in the position of corresponding restraining groove on the outer cylinder body.Because damper its outer cylinder body when work is fixed, impact force suffered on the piston rod is delivered in the capping by fluid oil, on the inner side surface of the utility model by rear end of the cylinder block outside the step of closing in is set, thereby makes capping in the axial direction reliable supporting and spacing can be arranged; Simultaneously, locating journal forms a kind of bearing with positioning hole and is connected, and makes capping supported diametrically; In addition, by the screens of stop screw, guaranteeing to avoid capping play in the axial direction, especially inside play under the capping prerequisite free to rotate with the restraining groove of annular.
As preferably, the centre hole axis of described capping forms the oil hole of band tapering to extending backward, is provided with steel ball in the oil hole, and the rear side of steel ball is provided with the Cock screw that presses steel ball, and the tapering of described oil hole is 12 °～30 °.The oil hole that the band tapering is set in capping cooperates the one-way valve structures of steel ball, makes things convenient for the filling and the replacing of fluid oil; And if the tapering of oil hole is too little, then can improves requirement, and can cause the self-locking of steel ball its dimensional accuracy, and the tapering of oil hole is excessive, Cock screw to the identical prerequisite of the active force of steel ball under, steel ball is less to the pressure of the oil hole conical surface, thereby is unfavorable for the sealing of steel ball.
As preferably, be connected with adjustment seat by the screw of being located at the axle center on the exterior edge face of described capping locating journal, the end face that described adjustment seat cooperates with locating journal is provided with the long-round-shape groove, and the exterior edge face of locating journal is provided with the long-round-shape projection of going deep in the long-round-shape groove.Adjustment seat is set in capping, makes the utility model can rotate capping easily, can make things convenient for the manufacturing and the assembling of capping simultaneously to adjust the size of damping; And the cooperation of long-round-shape projection and long-round-shape groove can prevent relatively rotating between adjustment seat and the capping, makes between the two reliably to connect.
As preferably, the rear end that is connected with piston head on the piston rod of described piston is provided with the linkage section of one, the center of piston head is provided with through hole and is set on the linkage section of piston rod, the tail end of described linkage section is articulated with the spring seat of butterfly, linkage section is provided with the screens cover in the outside of spring seat, one end of described Returnning spring is close to the inner side end of capping, and the other end is close to the edge of butterfly spring seat.Spring seat can play the screens effect to piston head; When rotating capping with the adjusting damping, the Returnning spring of being close to capping can rotate thereupon together, and drive piston rotation, because piston has certain rotational resistance, therefore can produce relative rotation and rub between Returnning spring and piston head or the capping, and make Returnning spring generation distortion to a certain degree, even cause the inefficacy of Returnning spring.The utility model articulates the spring seat of a butterfly at the tail end of piston rod linkage section, to be used for the supporting of Returnning spring, when capping is rotated, the spring seat that articulates can rotate with Returnning spring and capping, avoided the friction between Returnning spring and piston head and the capping, simultaneously, the frustoconic shape projection in the middle of the spring seat of butterfly can be carried out radially location to Returnning spring.
As preferably, be provided with the skeleton shape correcting body that is slidingly matched with the outer cylinder body inner side surface in the inboard of protecgulum, the center of correcting body is provided with the correcting hole that is slidingly matched with piston rod, and be provided with oily breach at the edge of rear end, be provided with the elasticity pressure accumulation body that adopts the pressure accumulation sponge to make at the intermediate section and the cavity place between the outer cylinder body inner side surface of correcting body.The utility model is provided with skeleton shape correcting body in the inboard of outer cylinder body leading portion protecgulum, both can effectively support and led piston rod, be stuck when avoiding piston rod work, can alleviate the weight of correcting body again, simultaneously, intermediate section and the cavity place between the outer cylinder body inner side surface at the correcting body just can be used for being provided with the pressure accumulation sponge, being used to regulate the volume size of oil return cavity, thereby help making compact structure.
In sum, the utlity model has following beneficial effect: (1) inner cylinder body adopts and divides body structure, is convenient to its processing and improves machining accuracy; (2) size with throttling oil circuit liquid flow section is associated with the rotation of capping, and Placement is changed into be rotationally connected, thus the inefficacy that can avoid the dilatating and deformable because of inner cylinder liner to cause the loosening of capping and regulate.
Description of drawings
Fig. 1 is the assembly structure schematic representation of outer cylinder body and inner cylinder body in a kind of adjustable hydraulic damper of prior art;
Fig. 2 is a structural representation of the present utility model;
Fig. 3 is the structural representation of outer cylinder body in the utility model;
Fig. 4 is the structural representation of inner cylinder body in the utility model;
Fig. 5 is the A-A sectional view among Fig. 4;
Fig. 6 is that B among Fig. 4 is to view;
Fig. 7 is the structural representation of adjustment seat in the utility model;
Fig. 8 is a structure of piston schematic representation in the utility model;
Fig. 9 is a mounting structure schematic representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
In the embodiment shown in Figure 2, adjustable hydraulic damper of the present utility model comprises the outer cylinder body of opening at two ends 1, is embedded with inner cylinder body 2 in the back segment of outer cylinder body 1.The structure of outer cylinder body 1 as shown in Figure 3, the inner side surface of its rear end is provided with the step 11 of closing in, and forms a positioning hole 12.As Fig. 2, shown in Figure 4, inner cylinder body 2 adopts and divides body structure, comprise the steel inner cylinder liner 21 of a tubulose and the capping 22 that is arranged on inner cylinder liner 21 rear ends rotationally, inner cylinder liner 21 is by the fitting surface and outer cylinder body 1 interference fit of outer side surface intermediate section, fixedly connected thereby make between inner cylinder liner 21 and the outer cylinder body 1, and leave the gap between the outer side surface two ends of inner cylinder liner 21 and the outer cylinder body 1, thereby can shorten length of thread engagement between outer cylinder body 1 and the inner cylinder liner 21, reduce the grinding amount of outer cylinder body 1 and inner cylinder liner 21 and make things convenient for the assembling of inner cylinder body 2.Capping 22 adopts brass to make, and cooperates with the inner cylinder liner 21 of steel to reduce its wearing and tearing, and certainly, capping 22 also can adopt other copper material or alloy material to make.Capping 22 comprises the mating part 220 that is positioned at inner cylinder liner 21 and is rotatably assorted with inner cylinder liner 21, and the locating journal 222 that is rotatably assorted with the positioning hole 12 of outer cylinder body 1 rear end, the end face of the side that links to each other with locating journal 222 on the mating part 220 is spacing on the end face of outer cylinder body 1 rear end step 11, thereby makes the reliable in the axial direction supporting of capping 22 spacing.The restraining groove 223 of annular is set on the outer side surface of locating journal 222, and the position of corresponding restraining groove 223 radially is provided with the stop screw 224 of screens in restraining groove 223 on the step 11 of outer cylinder body simultaneously, thereby can prevent the axial float of capping 22.The root of locating journal 222 outer side surfaces then is provided with seal groove, and seal ring is set in seal groove, so that the rear end of outer cylinder body 1 is sealed.In addition, a center hole 221 is set being positioned in the capping 22 on inner cylinder liner 21 1 side end faces, center hole 221 axial extendings backward form the oil hole 225 of band tapering, the tapering of oil hole 225 is 15 °, be provided with steel ball 226 in the oil hole 225, steel ball 226 is stuck in the big end of oil hole 225, and the big end rear side of oil hole 225 is provided with coaxial tapped hole, be provided with the Cock screw 227 that presses steel ball 226 in the tapped hole, thereby on oil hole 225, form an one-way valve structures.Further, on the ear end face of capping locating journal 222, be provided with adjustment seat 10, on the exterior edge face of adjustment seat 10, sunk screw be set, and adjustment seat 10 is fixedlyed connected with capping 22 by the tapped hole of the 225 big end rear sides of oil hole in the capping.For avoiding occurring relatively rotating between adjustment seat 10 and the capping 22, as shown in Figure 7, on adjustment seat 10 and end face that locating journal 222 cooperates, be provided with long-round-shape groove 101, then be provided with the long-round-shape projection 228 of screens in long-round-shape groove 101 as shown in Figure 6 on the exterior edge face of locating journal 222.
In addition, as shown in Figure 2, the piston 4 that is mated in the front end setting of inner cylinder body 2, thereby constitute an oil storage cavity 5, piston 4 comprises the piston head 42 that is slidingly matched with inner cylinder liner 21 and is connected with piston head 42 and stretches out the outer piston rod 41 of outer cylinder body 1, the front end of piston rod 41 is provided with a removable crashproof cap 45, the rear end that is connected with piston head 42 on the piston rod 41 is the linkage section 411 of one, the center of piston head 42 is provided with through hole and is set on the linkage section 411 of piston rod, and be articulated with the spring seat 43 of butterfly at the tail end of linkage section 411, for ease of processing, spring seat 43 can adopt four paws structure shown in Figure 8, the end face of the edge of spring seat 43 and piston head 42 is fitted, jut in the middle of it is towards the rear end of piston rod 41, and in the outside of jut screens is installed and overlaps 44, simultaneously, corresponding position is provided with axle journal on the linkage section 411 of piston rod 41, screens cover 44 is a cylinder that copper material is made, and adopt frock clamping to its outer side surface extruding and be embedded in the axle journal of linkage section 411, thereby to spring seat 43 screens reliably.For realizing resetting of piston 4, Returnning spring 9 is installed in inner cylinder body 2, Returnning spring 9 adopts stage clip, and the one end is close to the edge of butterfly spring seat 43, and the other end is close to the inner side end of capping 22.
In addition, as shown in Figure 2, be inlaid with protecgulum 13, and on protecgulum 13 and through hole that piston rod 41 cooperates, seal ring be set, thereby between outer cylinder body 1 and inner cylinder body 2 and piston 4, constitute an oil return cavity 6 at outer cylinder body 1 front end.And in the inboard of protecgulum 13 skeleton shape correcting body 14 is set, the center of correcting body 14 is provided with the correcting hole 142 that is slidingly matched with piston rod 41, thereby piston 4 is led, and to its reset carry out spacing.In addition, oily breach 141 was set, at the intermediate section and the cavity place between outer cylinder body 1 inner side surface of correcting body 14 the elasticity pressure accumulation body 3 that adopts the pressure accumulation sponge to make was set simultaneously at the edge of correcting body 14 rear ends.In addition, seal ring is set at correcting body 14 near the outer side surface of protecgulum 13 1 ends and inner side surface respectively, to guarantee the sealing effect of outer cylinder body 1 front end.
In order to realize regulating the purpose of damping size, as shown in Figure 2, between inner cylinder body 2 and outer cylinder body 1, be provided with throttling oil circuit 8, at first, the mating part 220 outer side surface circumferencial directions that match with inner cylinder liner 21 in capping 22 are provided with throttling groove 81, as shown in Figure 5, the pairing central angle of the origin-to-destination of throttling groove 81 is 270 °, the cross section of throttling groove 81 is a rectangle, the degree of depth of throttling groove 81 is successively decreased from origin-to-destination is linear from deep to shallow, and then realizes the linear decrease of the area of throttling groove cross section from origin-to-destination; Secondly, at the starting point place of throttling groove 81 radial direction through hole 84 that is communicated with the center hole 221 of capping is set radially, and the position of corresponding throttling groove 81 is provided with a throttle orifice 82 on inner cylinder liner 21; At last, axial long strip spout 83 is set on the outer side surface of inner cylinder liner 21, spout 83 covers the throttle orifice 82 on the inner cylinder liners, and is connected with oil return cavity 6 in the outer cylinder body 1, and the central angle of the width correspondence of spout 83 is 45 °.Oil storage cavity 5 can be connected with oil return cavity 6 by the throttling oil circuit 8 that is made of throttle orifice 82 on the center hole in the capping 22 221, radial direction through hole 84, throttling groove 81, the inner cylinder liner 21 and spout 83.Owing to have the zone of 90 ° at one section corresponding central angle that throttling groove 81 is not set in the capping 21, therefore, when throttle orifice 82 and throttling groove 81 are overlapping, throttling oil circuit 8 is open-minded, and when rotating capping 22 when throttle orifice 82 on the inner cylinder liner 21 being positioned at do not have in the capping 22 throttling groove 81 regional, throttling groove 81 is sealed by the madial wall of inner cylinder liner 21, thereby throttling oil circuit 8 is disconnected, when throttle orifice 82 regional between the starting point of throttling groove 81 and terminal point, the cross section of the determined throttling groove 81 in the position of throttle orifice 82 promptly constitutes the liquid flow section of throttling oil circuit 8.When capping 22 was rotated, the size of the liquid flow section of above-mentioned throttling oil circuit 8 promptly produced linear change.In addition, the front end that is positioned at throttling groove 82 on the outer side surface of the mating part 220 that capping 22 matches with inner cylinder liner 21 is provided with seal ring, thereby can prevent the leakage of oil between capping 22 and the inner cylinder liner 21.
Further, as shown in Figure 9, screw thread and two installation nuts 31 are set, on the outer side surface of outer cylinder body 1 with convenient installation of the present utility model and use.
The utility model must be filled with fluid oil earlier in use in oil storage cavity 5 and oil return cavity 6, specifically can use hydraulic oil or silicone oil etc.At first unload lower adjusting seat 10, back out the Cock screw 227 on the oil hole 225 then and pour out steel ball 226, this moment can be by oiling in the oil storage cavity 5 of oil hole 225 in inner cylinder body 2, simultaneously, fluid oil enters in the oil return cavity 6 by throttling oil circuit 8, wait oil to fill with after, stop up oil holes 225 and tighten Cock screw 227 with steel ball 226, make oil hole 225 sealings, put in back adjustment seat 10.The utility model mounting type is in use earlier offered mounting hole as shown in Figure 9 on the plate 33 of installation place, then the adjustable hydraulic damper is passed mounting hole, and uses installation nut 31 fixing getting final product respectively in the both sides of plate 33.
When the crashproof cap 45 of piston rod 41 front ends is subjected to clashing into pressure, piston rod 41 drives piston head 42 and slides backward, thereby oil storage cavity 5 is diminished, and oil return cavity 6 becomes big, and the fluid oil in the oil storage cavity 5 enters by throttling oil circuit 8 in the oil return cavity 6 of outer cylinder body 1 under the pushing of piston head 42, because the liquid flow section of throttling oil circuit 8 is less, thereby fluid oil can produce bigger damping when flowing through, thereby reduces the Sliding velocity of piston 4, reaches the effect of buffering.Because piston rod 41 progressively gos deep into outer cylinder body 1 inside, thereby the oil storage space in the whole outer cylinder body 1 reduces, at this moment, the pressure accumulation sponge is subjected to the effect of oil pressure and compresses, the fluid oil that enters oil return cavity 6 can enter the cavity that is positioned at piston head 42 front ends in the inner cylinder liner 2 by the oily breach 141 of the mistake on the correcting body 14 on the one hand, and another part fluid oil then enters in the cavity of pressure accumulation sponge compression back generation.When the pressure on the crashproof cap 45 was cancelled, the Returnning spring 9 in the inner cylinder body 2 promoted piston 4 by spring seat 43 and resets, and the fluid oil in the oil return cavity 6 then flows back in the oil storage cavity 5 again by throttling oil circuit 8, and the pressure accumulation sponge then resiles.By rotating adjustment seat 10, thereby capping 22 is rotated to change the liquid flow section size of throttling oil circuit 8, damping size in the time of can changing fluid oil by throttling oil circuit 8, because the size of the liquid flow section of throttling oil circuit 8 is linear change, but thereby the size of linearly adjust damping, and then reach the purpose of step-less adjustment cushioning effect.
Claims (10)
1. adjustable hydraulic damper, comprise outer cylinder body, inner cylinder body, be located at the protecgulum of outer cylinder body front end, be located at elasticity pressure accumulation body in the outer cylinder body and the piston of being located at the inner cylinder body front end, in outer cylinder body, constitute an oil storage cavity by piston and inner cylinder body, remaining cavity then constitutes the oil return cavity in the outer cylinder body, in oil storage cavity and oil return cavity, be filled with fluid oil, in inner cylinder body, also be provided with the Returnning spring that is used for piston reset, it is characterized in that, described inner cylinder body (2) adopts and divides body structure, comprise the inner cylinder liner (21) of tubulose and the capping (22) of being located at inner cylinder liner (21) rear end rotationally, described inner cylinder liner (21) is embedded in outer cylinder body (1) back segment, be provided with the throttling oil circuit (8) that is communicated with oil storage cavity (5) and oil return cavity (6) respectively between inner cylinder body (2) and outer cylinder body (1), the liquid flow section size of described throttling oil circuit (8) is associated with the rotation angle of capping (22).
2. adjustable hydraulic damper according to claim 1, it is characterized in that, described throttling oil circuit (8) comprises is located at a center hole (221) that is positioned at inner cylinder liner (21) one side end faces in the capping (22), on the circumferencial direction of the outer side surface that capping (22) cooperates with inner cylinder liner (21), be provided with throttling groove (81), the cross section of throttling groove (81) is from descending linear the successively decreasing of origin-to-destination, and described capping (22) is provided with the radial direction through hole (84) that is communicated with center hole (221) at the starting point place of throttling groove (81); The outer side wall of described inner cylinder liner (21) is provided with the axial spout (83) that is communicated with oil return cavity (6), and described throttling groove (81) is communicated with spout (83) by the throttle orifice of being located on inner cylinder liner (21) sidewall (82).
3. adjustable hydraulic damper according to claim 2, it is characterized in that, the cross section of described throttling groove (81) is a rectangle, or triangle, or it is semicircle, the degree of depth of throttling groove (81) is successively decreased from origin-to-destination is linear from deep to shallow, and the bottom of throttling groove (81) joins at destination county and inner cylinder liner outer side surface slyness, and the pairing central angle of the origin-to-destination of throttling groove is 150 °～300 °.
4. according to claim 2 or 3 described adjustable hydraulic dampers, it is characterized in that the front end that is positioned at throttling groove (81) on capping (22) and outer side surface that inner cylinder liner (21) cooperates is provided with seal ring.
5. adjustable hydraulic damper according to claim 1 is characterized in that, is interference fit between the middle part of described inner cylinder liner (21) and the outer cylinder body (1), leaves the space between its forward and backward two ends and the outer cylinder body (1).
6. adjustable hydraulic damper according to claim 1, it is characterized in that, the inner side surface of described outer cylinder body (1) rear end is provided with the step (11) of closing in, and form a positioning hole (12), be positioned in the described capping (22) on the outer end face of inner cylinder liner (21) and extended axially locating journal (222), between the positioning hole (12) of locating journal (222) and step (11) for being rotatably assorted, the outer side surface of described locating journal (222) is provided with the restraining groove (223) of annular, and the position of going up corresponding restraining groove (223) at outer cylinder body (1) radially is provided with the stop screw (224) of screens in restraining groove (223).
7. adjustable hydraulic damper according to claim 2, it is characterized in that, the axial extending backward of the center hole (221) of described capping (22) forms the oil hole (225) of band tapering, be provided with steel ball (226) in the oil hole (225), the rear side of steel ball (226) is provided with the Cock screw (227) that presses steel ball, and the tapering of described oil hole (225) is 12 °～30 °.
8. adjustable hydraulic damper according to claim 7, it is characterized in that, be connected with adjustment seat (10) by the screw of being located at the axle center on the exterior edge face of described capping locating journal (222), the end face that described adjustment seat (10) cooperates with locating journal (222) is provided with long-round-shape groove (101), and the exterior edge face of locating journal (222) is provided with the long-round-shape projection of going deep in the long-round-shape groove (101) (228).
9. adjustable hydraulic damper according to claim 1, it is characterized in that, the piston rod (41) of described piston (4) is gone up the linkage section (411) that the rear end that is connected with piston head (42) is provided with one, the center of piston head (42) is provided with through hole and is set on the linkage section (411) of piston rod, the tail end of described linkage section is articulated with the spring seat (43) of butterfly, linkage section (411) is provided with screens cover (44) in the outside of spring seat (43), one end of described Returnning spring (9) is close to the inner side end of capping (22), and the other end is close to the edge of butterfly spring seat (43).
10. according to claim 1 or 2 or 3 or 5 or 6 or 7 or 8 or 9 described adjustable hydraulic dampers, it is characterized in that, be provided with the skeleton shape correcting body (14) that is slidingly matched with outer cylinder body (1) inner side surface in the inboard of protecgulum (13), the center of correcting body (14) is provided with the correcting hole (142) that is slidingly matched with piston rod (41), and be provided with oily breach (141) at the edge of rear end, be provided with the elasticity pressure accumulation body (3) that adopts the pressure accumulation sponge to make at the intermediate section and the cavity place between outer cylinder body (1) inner side surface of correcting body (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010203018945U CN201636259U (en) | 2010-01-29 | 2010-01-29 | Adjustable hydraulic damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010203018945U CN201636259U (en) | 2010-01-29 | 2010-01-29 | Adjustable hydraulic damper |
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| CN201636259U true CN201636259U (en) | 2010-11-17 |
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| CN2010203018945U Expired - Lifetime CN201636259U (en) | 2010-01-29 | 2010-01-29 | Adjustable hydraulic damper |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102367857A (en) * | 2011-09-20 | 2012-03-07 | 宁波一力减震器有限公司 | Adjustable force type hydraulic damper |
| CN102518731A (en) * | 2011-12-09 | 2012-06-27 | 北京工业大学 | Gap self-adapting viscous damper with high energy consumption |
| CN104879429A (en) * | 2015-06-05 | 2015-09-02 | 无锡比德希减震阻尼技术有限公司 | Adjustable capped buffer for mechanical industry |
| CN107308521A (en) * | 2017-08-16 | 2017-11-03 | 刘昕烨 | Flow rate of liquid adjusting means is used in one kind nursing |
| CN107461443A (en) * | 2017-07-05 | 2017-12-12 | 无锡比德希减震阻尼技术有限公司 | A kind of single hole piston-type hydraulic buffer |
| CN108412938A (en) * | 2018-01-31 | 2018-08-17 | 武汉船用机械有限责任公司 | A kind of adjustable hydraulic damping unit |
| CN108561483A (en) * | 2018-05-09 | 2018-09-21 | 浙江雷宸智能科技有限公司 | Hydraulic damper |
| CN111440708A (en) * | 2020-05-08 | 2020-07-24 | 中国计量大学 | Chick embryo virus injection head optimization device |
-
2010
- 2010-01-29 CN CN2010203018945U patent/CN201636259U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102367857A (en) * | 2011-09-20 | 2012-03-07 | 宁波一力减震器有限公司 | Adjustable force type hydraulic damper |
| CN102367857B (en) * | 2011-09-20 | 2013-07-24 | 宁波一力减震器有限公司 | Adjustable force type hydraulic damper |
| CN102518731A (en) * | 2011-12-09 | 2012-06-27 | 北京工业大学 | Gap self-adapting viscous damper with high energy consumption |
| CN102518731B (en) * | 2011-12-09 | 2013-08-07 | 北京工业大学 | Gap self-adapting viscous damper with high energy consumption |
| CN104879429A (en) * | 2015-06-05 | 2015-09-02 | 无锡比德希减震阻尼技术有限公司 | Adjustable capped buffer for mechanical industry |
| CN107461443A (en) * | 2017-07-05 | 2017-12-12 | 无锡比德希减震阻尼技术有限公司 | A kind of single hole piston-type hydraulic buffer |
| CN107308521A (en) * | 2017-08-16 | 2017-11-03 | 刘昕烨 | Flow rate of liquid adjusting means is used in one kind nursing |
| CN107308521B (en) * | 2017-08-16 | 2020-04-14 | 韩晓丽 | Liquid flow rate adjusting device for nursing |
| CN108412938A (en) * | 2018-01-31 | 2018-08-17 | 武汉船用机械有限责任公司 | A kind of adjustable hydraulic damping unit |
| CN108561483A (en) * | 2018-05-09 | 2018-09-21 | 浙江雷宸智能科技有限公司 | Hydraulic damper |
| CN111440708A (en) * | 2020-05-08 | 2020-07-24 | 中国计量大学 | Chick embryo virus injection head optimization device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
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Address after: Zhejiang province Fenghua City Siming road 315500 High-tech Park No. 88 Patentee after: Ningbo Yadeke Automatic Chemical Industry Co., Ltd. Address before: Zhejiang province Fenghua City Siming road 315500 High-tech Park No. 1 Patentee before: Ningbo Yadeke Automatic Chemical Industry Co., Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101117 |