CN216789084U - Viscous damper with large axial limiting force - Google Patents
Viscous damper with large axial limiting force Download PDFInfo
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- CN216789084U CN216789084U CN202220382600.9U CN202220382600U CN216789084U CN 216789084 U CN216789084 U CN 216789084U CN 202220382600 U CN202220382600 U CN 202220382600U CN 216789084 U CN216789084 U CN 216789084U
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Abstract
The application discloses viscous damper with big confining force of axial relates to bridge antidetonation technical field, includes: viscous damper still contains stop device, and stop device includes: the first supporting steel ring is sleeved and fixed at the left end of the cylinder barrel; the outer circular surface of the first support steel ring is attached to the inner circular surface of the counter-force cylinder barrel; the left end of the counter-force cylinder barrel is fixed on the left ear part through a connecting component; a circular sealing plate is arranged at the right port of the counter-force cylinder barrel, and the cylinder barrel penetrates through the circular sealing plate; when the piston moves leftwards to be attached to the inner surface of the end cover on the left side of the cylinder barrel, the first support steel ring limits the circular sealing plate of the counter-force cylinder barrel to move leftwards; when the piston moves to the right to be attached to the inner surface of the end cover on the right side of the cylinder barrel, the end cover on the left side of the cylinder barrel limits the left ear post of the left ear to move to the right. According to the viscous damper and the mounting method thereof, the requirement that the small-tonnage damping force is matched with the large-tonnage limiting force is met through the limiting device with a specific structure.
Description
Technical Field
The application relates to the technical field of bridge anti-seismic, in particular to a viscous damper with axial large limiting force.
Background
At present, the viscous damper is used as a passive anti-seismic device, has the advantages of simple structure, good anti-seismic effect, low manufacturing cost and longer service life, and is widely applied to bridge anti-seismic structures. The viscous damper mainly comprises a piston, a piston rod, silicon oil, an oil cylinder and a left lug part and a right lug part. The piston reciprocates in the silicon oil in the oil cylinder to generate damping force for dissipating energy, so that the effects of vibration reduction and shock resistance are achieved.
The bridge construction in China is developed towards a sea-crossing bridge, and the sea-crossing bridge marks higher and stronger requirements of bridge construction business in China. As the safety guarantee of bridge construction, the viscous damper meets the damping mechanical property, and the sea-crossing bridge also provides new requirements for the damper, namely, the viscous damper needs to have a limiting function. The viscous damper used at present is a speed type, and when the general damper moves slowly (temperature change or vehicle actuation and the like), the actual damping force is not more than 10% of the designed damping force; if the slow movement stroke of the structure exceeds the design displacement, the damper structure will break. The viscous damper needs to have a limiting function, and generates a limiting force when the designed displacement is exceeded, so that the damper structure is protected from being damaged due to large deformation.
In the design process of the related damper, the phenomenon that the small-tonnage damping force of the damper is required to be matched with the large-tonnage limiting force often occurs due to the external stress environment of the damper, so that the design of the damper is greatly difficult. If according to the design mode of conventional light-tonnage damping force, the structure of the whole damper can not meet the condition of large-tonnage limiting force in a limiting state, and if the damper is designed according to the structure in the large-tonnage limiting force state, the damper material is greatly wasted, and the requirement of light weight of the structure is not met.
In the prior art, a rigid limiting device such as a disc spring or a flexible limiting device such as a rubber elastic body is generally used as a limiting device of a damper. However, when a rigid limiting device such as a disc spring is used, the disc spring has a larger size and needs to be stacked in multiple blocks for use compared with a rubber elastic body structure in a state of satisfying the same limiting force, and under the condition that the mounting space of the damper has extremely high requirements, the size of the damper is increased, and the performance of the damper in other aspects is reduced. When flexible limiting devices such as rubber elastomers are adopted, the limiting devices are mostly installed at the positions of the piston rods of the viscous dampers, and the piston rods of the dampers bear limiting force in the operation process, so that the requirements on the self performance (strength, rigidity and the like) of the piston rods are greatly enhanced, and the production cost is greatly increased.
Disclosure of Invention
Aiming at the defects in the prior art, the viscous damper with the axial large limiting force is provided, the limiting device with the specific structure is used for reducing the structural size of the damper, and the requirement that the small-tonnage damping force is matched with the large-tonnage limiting force is also met.
In order to achieve the above purposes, the technical scheme is as follows: the utility model provides a viscous damper with big confining force of axial, contains left ear, cylinder, right ear, piston and piston rod, left side ear is fixed in the tip of piston rod, right ear is fixed in the cylinder, viscous damper still contains stop device, stop device includes:
the first supporting steel ring is sleeved and fixed at the left end of the cylinder barrel;
the counter-force cylinder barrel is coaxially arranged outside the cylinder barrel, and the inner diameter of the counter-force cylinder barrel is larger than the outer diameter of the cylinder barrel; the outer circular surface of the first support steel ring is attached to the inner circular surface of the counter-force cylinder barrel; the left end of the counter-force cylinder barrel is fixed on the left ear part through a connecting component; a circular sealing plate is arranged at the right port of the counter-force cylinder barrel, and the cylinder barrel penetrates through the circular sealing plate;
when the piston moves leftwards to be attached to the inner surface of the end cover on the left side of the cylinder barrel, the first support steel ring is used for limiting the left movement of the circular sealing plate of the counter-force cylinder barrel; when the piston moves rightwards to be attached to the inner surface of the end cover on the right side of the cylinder barrel, the end cover on the left side of the cylinder barrel is used for limiting the left ear post of the left ear to move rightwards.
On the basis of the technical scheme, the limiting device further comprises a first rubber elastic body, the first rubber elastic body is attached to and fixed on the outer surface of the end cover on the left side of the cylinder barrel, and the piston rod penetrates through the first rubber elastic body; when the piston moves to the right to the inner surface of the end cover adjacent to the right side of the cylinder, the first rubber elastic body is used for limiting the right movement of the left ear part.
On the basis of the technical scheme, the connecting assembly comprises an anti-collision steel plate, a second rubber elastic body and a second supporting steel ring, the anti-collision steel plate is fixed at the left end opening of the counter-force cylinder barrel, the second supporting steel ring is sleeved at the right end of a left ear column fixed at the left ear part, and the outer circular surface of the second supporting steel ring is attached to the inner circular surface of the counter-force cylinder barrel; the second rubber elastic body is arranged between the anti-collision steel plate and the second support steel ring; the left ear post penetrates the crash steel plate and the second rubber elastic body.
On the basis of the technical scheme, a guide belt is arranged on the contact surface of the circular sealing plate of the counter-force cylinder barrel and the cylinder barrel.
On the basis of the technical scheme, the outer circular surface of the first support steel ring and the outer circular surface of the second support steel ring are both provided with guide belts.
On the basis of the technical scheme, the axial length of the left ear column of the left ear part is equally divided into three equal parts, and the thicknesses of the second support steel ring, the second rubber elastic body and the anti-collision steel plate are equal to the length of one part of the second support steel ring, the second rubber elastic body and the anti-collision steel plate.
On the basis of the technical scheme, the first support steel ring and the counter-force cylinder barrel are made of aluminum box alloy materials.
On the basis of the technical scheme, the left end of the piston rod is provided with an external thread, the left ear column is provided with an internal thread, and the piston rod and the left ear column are fixedly connected through the threads.
On the basis of the technical scheme, the wall thickness of the reaction cylinder barrel is larger than that of the cylinder barrel.
On the basis of the technical scheme, the outer diameter of the left ear pillar is smaller than that of the cylinder barrel.
The beneficial effect that technical scheme that this application provided brought includes:
according to the viscous damper with the large axial limiting force, on the premise that the structure (such as an oil cylinder, an end cover, a piston rod and related sealing parts) and the size of a conventional damper are not changed, the related requirements can be met only by additionally arranging the limiting device and adjusting the sizes of the left lug part and the right lug part, and the piston rod can be prevented from bearing the corresponding limiting force, so that the damping force and the limiting force are not influenced in a crossed manner and are independent of each other; the design of the piston rod only needs to consider the damping force, and the limiting force is mainly realized through the limiting device, so that the design and manufacturing cost is greatly saved, the design difficulty is reduced, the structural size of the damper is reduced compared with the traditional technical scheme, and the requirement that the small-tonnage damping force is matched with the large-tonnage limiting force is met.
According to the viscous damper, the limit position of the leftward movement of the piston is limited by matching the counter-force cylinder barrel of the limiting device with the first support steel ring, and the counter-force cylinder barrel and the first support steel ring are convenient for adjusting the thickness and the material, so that a great limiting force can be provided; the end cover on the left side of the cylinder barrel limits the left lug post of the left lug to move rightwards by adjusting the sizes of the piston rod, the cylinder barrel and the left lug, so that the structure is slightly changed, and the design is ingenious; and the bearing main body of the limiting force is a counter-force cylinder barrel at the left limit of the movement of the piston; the right limit of piston motion, the main part of bearing of confining force is the cylinder, and the size of counter-force cylinder and cylinder is big, and thickness and material are all easily adjusted, easily satisfy the designing requirement of big confining force, and the confining force that counter-force cylinder and cylinder bore finally all transmits to girder or main tower and disperses the power, and protection attenuator both sides primary structure is not destroyed, has still protected viscous damper structure itself not to destroy.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a viscous damper with a large axial limiting force according to an embodiment of the present application;
fig. 2 is a schematic structural view of a limiting device according to an embodiment of the present disclosure;
reference numerals: 1. a left ear; 11. a left ear post; 2. a cylinder barrel; 3. a damping medium; 4. a right ear; 41. a right ear cylinder; 5. a piston rod; 6. a piston; 7. a limiting device; 8. an end cap; 701. a counter-force cylinder barrel; 702. a first support steel ring; 703. a first rubber elastic body; 704. a second support steel ring; 705. an anti-collision steel plate; 706. a screw; 707. a guide belt; 708. a second rubber elastomer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1 and fig. 2, the present application discloses an embodiment of a viscous damper with large axial limiting force, comprising a left ear 1, a cylinder 2, a damping medium 3, a right ear 4, a piston rod 5 and a piston 6, wherein the left end and the right end of the cylinder 2 are both sealed and fixed by an end cap 8. Two ends of the piston rod 5 respectively penetrate through end covers 8 at the left end and the right end of the cylinder barrel 2. The left ear 1 is fixed at the left end of the piston rod 5, and the right ear 4 is fixed at the cylinder barrel 2, so that a damper structure is formed. Specifically, the right ear 4 includes an ear plate body and a right ear cylinder 41, and the right ear cylinder 41 is located on the left side of the ear plate body. The axis of the right ear tube 41 is coaxial with the axis of the cylinder tube 2, a part of the right ear tube 41 is sleeved and fixed at the right end of the cylinder tube 2, and the rest of the right ear tube 41 and the cylinder tube 2 form a right movable cavity of the piston rod 5, so that a motion space is provided for the piston rod 5.
Furthermore, the cylinder 2 is divided into two chambers by the piston 6, the two chambers are filled with damping media 3, and the piston 6 is provided with damping holes penetrating through the left chamber and the right chamber. When the relative movement between the left and right ears 1 and 4 is slow, the damping medium 3 flows from one chamber to the other through the damping holes, the piston 6 moves slowly in the cylinder 2, and the damping medium 3 provides almost no damping force. When the relative motion speed of the left ear 1 and the right ear 4 is high, the piston 6 has a tendency of moving fast in the cylinder 2, the damping medium 3 does not have time to flow from one chamber to the other chamber through the damping hole, and the piston 6 receives the damping force of the damping medium 3 to slow down the relative motion speed of the left ear 1 and the right ear 4.
The viscous damper with the axial large limiting force further comprises a limiting device 7. The limiting device 7 comprises a first support steel ring 702 and a reaction cylinder 701. The first support steel ring 702 is fixed at the left end of the cylinder barrel 2 in a sleeved manner, and the axis of the first support steel ring 702 is coaxial with the axis of the cylinder barrel 2. The first support steel ring 702 plays both the role of supporting the reaction cylinder 701 and the limiting role.
The reaction cylinder 701 is coaxially disposed outside the cylinder 2, and the inner diameter of the reaction cylinder 701 is larger than the outer diameter of the cylinder 2, that is, a certain gap is provided between the inner circumferential surface of the reaction cylinder 701 and the outer circumferential surface of the cylinder 2. The outer circular surface of the first support steel ring 702 is attached to the inner circular surface of the reaction cylinder 701 for supporting the reaction cylinder 701. The left end of the reaction cylinder 701 is fixed to the left ear 1 through a coupling member. The right port of the reaction cylinder 701 has a circular closure plate through which the cylinder 2 slidably penetrates. When relative motion takes place for right ear 4 for left ear 1, reaction cylinder 701 moves along with left ear 1, and circular shrouding slides at 2 surface on the cylinder, and circular shrouding receives the restriction of first support steel ring 702.
During the actual operation of the viscous damper, the piston 6 moves slowly and is subjected to a small damping force. When the piston 6 moves leftwards to be attached to the inner surface of the end cover 8 on the left side of the cylinder barrel 2, the right end face of the first support steel ring 702 is attached to the circular sealing plate of the reaction cylinder barrel 701, and the first support steel ring 702 limits the circular sealing plate of the reaction cylinder barrel 701 to move leftwards. When the piston 6 moves to the right to abut the inner surface of the end cap 8 on the right side of the cylinder 2, the end cap 8 on the left side of the cylinder 2 restricts the left ear post 11 of the left ear 1 from moving to the right.
According to the viscous damper, on the premise that the structure (such as an oil cylinder, an end cover, a piston rod and related sealing parts) and the size of a conventional damper are not changed, related requirements can be met only by additionally arranging the limiting device 7 and adjusting the sizes of the left lug part and the right lug part, and the piston rod can be prevented from bearing corresponding limiting force, so that the damping force and the limiting force are not influenced in a crossed manner and are independent of each other; the design of the piston rod only needs to consider damping force, and the limiting force is mainly realized through the limiting device 7, so that the design and manufacturing cost is greatly saved, and the design difficulty is reduced.
According to the viscous damper, the limit position of leftward movement of a piston is limited by matching the reaction cylinder 701 of the limiting device with the first support steel ring 702, and the reaction cylinder 701 and the first support steel ring 702 are convenient for adjusting the thickness and the material, so that a great limiting force can be provided; the end cover 8 on the left side of the cylinder barrel 2 limits the left ear post 11 of the left ear part 1 to move rightwards by adjusting the sizes of the piston rod, the cylinder barrel 2 and the left ear part, so that the structure change is small, and the design is ingenious; and at the left limit of the piston motion, the main body for bearing the limiting force is a reaction cylinder 701; piston motion's right limit, the main part of bearing of confining force is cylinder 2, and the size of counter-force cylinder 701 and cylinder 2 is big, and thickness and material are all easily adjusted, easily satisfy the design requirement of big confining force, and the confining force that counter-force cylinder 701 and cylinder 2 bore finally all transmits to girder or main tower and disperses power, and protection attenuator both sides primary structure is not destroyed, has still protected viscous damper structure itself not to destroy.
In one embodiment, the limiting device 7 further includes a first rubber elastic body 703, the first rubber elastic body 703 is attached to the outer surface of the end cover 8 fixed on the left side of the cylinder barrel 2, and the piston rod 5 penetrates through the first rubber elastic body 703. When the piston 6 moves rightward to the inner surface of the end cap 8 adjacent to the right side of the cylinder tube 2, the first rubber elastic body 703 restricts the rightward movement of the left ear 1. The first rubber elastic body 703 of this application further provides the cushion effect for left ear post 11 and cylinder 2 on the basis of satisfying the spacing power of the right limit of piston 6, avoids left ear post 11 and the left end cover 8 of cylinder 2 to take place violent collision, has improved the security performance.
In one embodiment, the connection assembly for fixing the left end of the reaction cylinder 701 to the left ear 1 comprises a crash steel plate 705, a second rubber elastic body 708, and a second support steel ring 704. The anti-collision steel plate 705 is fixed to the left end of the reaction cylinder 701, the second support steel ring 704 is sleeved on the right end of the left ear post 11 fixed to the left ear 1, and the outer circular surface of the second support steel ring 704 is attached to the inner circular surface of the reaction cylinder 701. The second support steel ring 704 is fixed to the left ear post 11, and the second support steel ring 704 is used to support the reaction cylinder 701. The second rubber elastic body 708 is arranged between the anti-collision steel plate 705 and the second support steel ring 704; the left ear post 11 penetrates the crash steel plate 705 and the second rubber elastic body 708. Specifically, the anti-collision steel plate 705 and the second support steel ring 704 are equivalently movably sleeved on the left ear post 11, and the second support steel ring 704 is fixedly sleeved on the left ear post 11. When the left ear 1 is right, the reaction cylinder 701 is pushed to the right; when the left ear 1 is towards the left, the second support steel ring 704 pushes and pushes the steel crash plate 705 towards the left through the buffering of the second rubber elastic body 708, and the reaction cylinder 701 is towards the left.
The utility model provides a coupling assembling specifically supports steel ring 704 through crashproof steel sheet 705, second rubber elastomer 708 and second, activity fixed connection counter-force cylinder 701 and left ear 1, and the load effect is stronger, compares in the mode of rigidity fixed, is adapted to big spacing power more.
Preferably, the cross-sections of the first and second support steel rings 702 and 704 are rectangular. Preferably, the crash plate 705 is secured to the left port of the reaction cylinder 701 by a screw 706.
In one embodiment, the guide strips 707 are disposed on the contact surface of the circular sealing plate of the reaction cylinder 701 and the cylinder 2, the outer circumferential surface of the first support ring 702, and the outer circumferential surface of the second support ring 704. The guide strip 707 of the present application enhances the sliding performance and avoids the occurrence of rigid friction at the contact surface.
In one embodiment, the axial length of the left ear post 11 of the left ear portion 1 is divided into three equal parts, and the thicknesses of the second support steel ring 704, the second rubber elastic body 708 and the crash steel plate 705 are all equal to the length of one of the parts.
Preferably, the left ear post 11 of the left ear part 1 is provided with an internal thread hole, the left end of the piston rod 5 is provided with an external thread, and the piston rod 5 is matched with the left ear post 11 through the thread.
In one embodiment, the guide strips 707 are provided on the contact surface of the circular closure plate of the reaction cylinder 701 with the cylinder 2. In one embodiment, the outer circumferential surface of the first support rim 702 and the outer circumferential surface of the second support rim 704 are provided with guide strips 707.
In one embodiment, the axial length of the left ear post 11 of the left ear portion 1 is divided into three equal parts, and the thicknesses of the second support steel ring 704, the second rubber elastic body 708 and the crash steel plate 705 are all equal to the length of one of the three parts. In one embodiment, the first support steel ring 702 and the reaction cylinder 701 are made of aluminum box alloy material.
In one embodiment, the left end of the piston rod 5 is provided with an external thread, the left ear post 11 is provided with an internal thread, and the piston rod 5 and the left ear post 11 are fixed through a threaded connection. In one embodiment, the wall thickness of the reaction cylinder 701 is greater than the thickness of the cylinder 2. In one embodiment, the outer diameter of the left ear post 11 is smaller than the outer diameter of the cylinder barrel 2.
The application also discloses an installation method based on the viscous damper, which comprises the following steps:
the first support steel ring 702 is sleeved and fixed at the left end of the cylinder barrel 2 to provide a support foundation and a limit foundation;
the cylinder barrel 2, the piston 6, the piston rod 5 and the end covers 8 on the left side and the right side of the cylinder barrel 2 are assembled conventionally in the same way as a conventional damper, and the damping medium 3 is injected into the cylinder barrel 2 to form a basic structure of the damper.
The reaction cylinder 701 is sleeved from the right side of the cylinder barrel 2 to the left side, a circular sealing plate of the reaction cylinder 701 slides along the outer circular surface of the cylinder barrel 2, and the first support steel ring 702 is supported on the inner circular surface of the reaction cylinder barrel 701;
the right ear part 4 is fixedly installed with the cylinder barrel 2; a right movable cavity is formed between the right ear cylinder 41 and the cylinder barrel 2. A left ear column 11 of the left ear part 1 is fixed with the left end of the piston rod 5;
the left end of the reaction cylinder 701 is fixed to the left ear post 11 through a coupling assembly.
The viscous damper is efficient and convenient to install, and only the limiting device 7 needs to be installed in a penetrating mode in the conventional damper assembling process; and the limit device 7 has little influence on the installation of the damper structures of the rest parts.
In one embodiment, the limiting device 7 further includes a first rubber elastic body 703, the first rubber elastic body 703 is attached to the outer surface of the end cover 8 fixed on the left side of the cylinder barrel 2, and the piston rod 5 penetrates through the first rubber elastic body 703. When the piston 6 moves rightward to the inner surface of the end cap 8 adjacent to the right side of the cylinder tube 2, the first rubber elastic body 703 restricts the rightward movement of the left ear 1. The first rubber elastic body 703 of this application further provides the cushion effect for left ear post 11 and cylinder 2 on the basis of satisfying the spacing power of the right limit of piston 6, avoids left ear post 11 and the left end cover 8 of cylinder 2 to take place violent collision, has improved the security performance.
In one embodiment, the connection assembly to which the left end of the reaction cylinder 701 is secured to the left ear 1 includes a crash steel plate 705, a second rubber elastomer 708, and a second support steel ring 704. The anti-collision steel plate 705 is fixed to the left end of the reaction cylinder 701, the second support steel ring 704 is sleeved on the right end of the left ear post 11 fixed to the left ear 1, and the outer circular surface of the second support steel ring 704 is attached to the inner circular surface of the reaction cylinder 701. The second support steel ring 704 is fixed to the left ear post 11, and the second support steel ring 704 is used to support the reaction cylinder 701. The second rubber elastic body 708 is arranged between the anti-collision steel plate 705 and the second support steel ring 704; the left ear post 11 penetrates the crash steel plate 705 and the second rubber elastic body 708. Specifically, the anti-collision steel plate 705 and the second support steel ring 704 are equivalently movably sleeved on the left ear post 11, and the second support steel ring 704 is fixedly sleeved on the left ear post 11. When the left ear 1 is right, the reaction cylinder 701 is pushed to the right; when the left ear 1 is towards the left, the second support steel ring 704 pushes and pushes the steel crash plate 705 towards the left through the buffering of the second rubber elastic body 708, and the reaction cylinder 701 is towards the left.
The utility model provides a coupling assembling specifically supports steel ring 704 through crashproof steel sheet 705, second rubber elastomer 708 and second, activity fixed connection counter-force cylinder 701 and left ear 1, and the load effect is stronger, compares in the mode of rigidity fixed, is adapted to big spacing power more.
Preferably, the cross-sections of the first and second support steel rings 702 and 704 are rectangular. Preferably, the crash plate 705 is secured to the left port of the reaction cylinder 701 by a screw 706.
In one embodiment, the guide strips 707 are provided on the contact surface of the circular closing plate of the reaction cylinder 701 and the cylinder 2, the outer circumferential surface of the first support ring 702, and the outer circumferential surface of the second support ring 704. The guide strip 707 of the present application enhances the sliding performance and avoids the occurrence of rigid friction at the contact surface.
In one embodiment, the axial length of the left ear post 11 of the left ear portion 1 is divided into three equal parts, and the thicknesses of the second support steel ring 704, the second rubber elastic body 708 and the crash steel plate 705 are all equal to the length of one of the three parts.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The utility model provides a viscous damper with big confining force of axial, contains left ear (1), cylinder (2), right ear (4), piston (6) and piston rod (5), the tip of piston rod (5) is fixed in left side ear (1), right side ear (4) are fixed in cylinder (2), its characterized in that, viscous damper still contains stop device (7), stop device (7) include:
the first supporting steel ring (702) is sleeved and fixed at the left end of the cylinder barrel (2);
a reaction cylinder (701) which is coaxially arranged outside the cylinder (2), wherein the inner diameter of the reaction cylinder (701) is larger than the outer diameter of the cylinder (2); the outer circular surface of the first support steel ring (702) is attached to the inner circular surface of the reaction cylinder barrel (701); the left end of the reaction cylinder barrel (701) is fixed on the left ear part (1) through a connecting component; a circular sealing plate is arranged at the right port of the counter-force cylinder barrel (701), and the cylinder barrel (2) penetrates through the circular sealing plate;
when the piston (6) moves leftwards to be attached to the inner surface of the end cover (8) on the left side of the cylinder barrel (2), the first support steel ring (702) is used for limiting the left movement of the circular sealing plate of the counter-force cylinder barrel (701); when the piston (6) moves rightwards to be attached to the inner surface of the end cover (8) on the right side of the cylinder barrel (2), the end cover (8) on the left side of the cylinder barrel (2) is used for limiting the left ear post (11) of the left ear part (1) to move rightwards.
2. A viscous damper having a large axial restraining force as defined in claim 1, wherein: the limiting device (7) further comprises a first rubber elastic body (703), the first rubber elastic body (703) is attached to and fixed on the outer surface of an end cover (8) on the left side of the cylinder barrel (2), and the piston rod (5) penetrates through the first rubber elastic body (703); when the piston (6) moves to the right to the inner surface of the end cover (8) adjacent to the right side of the cylinder barrel (2), the first rubber elastic body (703) is used for limiting the right movement of the left ear part (1).
3. A viscous damper having a large axial restraining force as claimed in claim 1 wherein: the connecting assembly comprises an anti-collision steel plate (705), a second rubber elastic body (708) and a second supporting steel ring (704), the anti-collision steel plate (705) is fixed to the left end opening of the reaction cylinder barrel (701), the second supporting steel ring (704) is sleeved and fixed to the right end of the left ear post (11) of the left ear portion (1), and the outer circular surface of the second supporting steel ring (704) is attached to the inner circular surface of the reaction cylinder barrel (701); the second rubber elastic body (708) is arranged between the anti-collision steel plate (705) and the second support steel ring (704); the left ear post (11) penetrates the crash steel plate (705) and the second rubber elastic body (708).
4. A viscous damper having a large axial restraining force as claimed in claim 3 wherein: and a guide belt (707) is arranged on the contact surface of the circular sealing plate of the reaction cylinder barrel (701) and the cylinder barrel (2).
5. A viscous damper having a large axial restraining force as claimed in claim 4 wherein: the outer circle surface of the first supporting steel ring (702) and the outer circle surface of the second supporting steel ring (704) are both provided with guide belts (707).
6. A viscous damper having a large axial restraining force as defined in claim 3 wherein: the axial length of a left ear column (11) of the left ear part (1) is equally divided into three equal parts, and the thicknesses of the second support steel ring (704), the second rubber elastic body (708) and the anti-collision steel plate (705) are equal to the length of one part of the second support steel ring, the second rubber elastic body and the anti-collision steel plate.
7. A viscous damper having a large axial restraining force as claimed in claim 1 wherein: and the first support steel ring (702) and the reaction cylinder barrel (701) are made of aluminum box alloy materials.
8. A viscous damper having a large axial restraining force as claimed in claim 1 wherein: the left end of the piston rod (5) is provided with an external thread, the left ear column (11) is provided with an internal thread, and the piston rod (5) and the left ear column (11) are fixedly connected through the threads.
9. A viscous damper having a large axial restraining force as claimed in claim 1 wherein: the reaction cylinder (701) has a wall thickness greater than the thickness of the cylinder (2).
10. A viscous damper having a large axial restraining force as defined in claim 1, wherein: the outer diameter of the left ear pillar (11) is smaller than that of the cylinder barrel (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220382600.9U CN216789084U (en) | 2022-02-24 | 2022-02-24 | Viscous damper with large axial limiting force |
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