阅读说明：本技术 一种双油缸双出杆式粘滞流体阻尼器 (Double-oil-cylinder double-rod viscous fluid damper ) 是由 苏毅 田嘉诚 李中义 于 2021-08-23 设计创作，主要内容包括：本发明公开了一种双油缸双出杆式粘滞流体阻尼器,包括活塞装置、盖板、内缸、外缸、内外缸连通装置。当活塞装置进行往复运动时,粘滞流体可以由内缸通过内外缸连通装置流入外缸,也可以由外缸通过内外杠连通装置流入内缸。相较于普通双出杆式粘滞流体阻尼器,该装置由于把阻尼孔从活塞转移到两侧的盖板上,在有限的长度内提升了阻尼力,提高了阻尼效率,并且由于所有构件均采用螺纹连接,便于前期加工制作组装以及后期维护、检修及更换。(The invention discloses a double-oil-cylinder double-rod viscous fluid damper, which comprises a piston device, a cover plate, an inner cylinder, an outer cylinder and an inner and outer cylinder communicating device. When the piston device reciprocates, the viscous fluid can flow into the outer cylinder from the inner cylinder through the inner and outer cylinder communication devices, and also can flow into the inner cylinder from the outer cylinder through the inner and outer rod communication devices. Compared with a common double-rod viscous fluid damper, the damping device has the advantages that the damping force is improved in a limited length due to the fact that the damping holes are transferred to the cover plates on the two sides from the piston, damping efficiency is improved, and due to the fact that all components are connected through threads, processing, manufacturing and assembling in an early stage and later maintenance, overhaul and replacement are facilitated.)

1. The utility model provides a two play pole formula viscous fluid damper of two hydro-cylinders which characterized in that: the double-oil-cylinder double-rod viscous fluid damper is mainly composed of a piston device (1), a cover plate (2), an inner cylinder (3), an outer cylinder (4), a base (5) and an inner and outer cylinder communicating device (6), wherein the piston device (1) is arranged in the inner cylinder (3) and penetrates through communication holes (12) of the front and rear cover plates (2) respectively, the piston device (1) freely moves in the inner cylinder (3), two ends of the inner cylinder (3) are screwed in the front and rear cover plates (2) respectively through threads, two ends of the outer cylinder (4) are screwed in the front and rear cover plates (2) respectively, the outer cylinder (4) is welded on the base (5), and the inner cylinder (3) and the outer cylinder (4) are communicated with each other through the inner and outer cylinder communicating device (6).

2. The dual-cylinder dual-rod viscous fluid damper as claimed in claim 1, wherein: the damping piston device is characterized in that the piston device (1) is formed by welding a piston rod (7) and a piston (8), the piston (8) is a steel concentric circular cylinder, the outer diameter of the steel concentric circular cylinder is consistent with the inner diameter of the inner cylinder (3), the inner diameter of the steel concentric circular cylinder is matched with the piston rod (7), the piston rod (7) is a steel round rod, a piston device connecting hole (9) is formed in the position where the steel concentric circular cylinder is connected with the damping structure, and viscous fluid in the inner cylinder (3) and the outer cylinder (4) flows through the damping hole (10) to generate damping force through reciprocating motion of the piston device (1).

3. The dual-cylinder dual-rod viscous fluid damper as claimed in claim 1, wherein: be provided with inner casing spread groove (11) on apron (2), do the tapping treatment in inner casing spread groove (11) inside, with the screw thread phase-match of inner casing (3) tip, and open there are damping hole (10) in inner casing spread groove (11) both sides on apron (2), tapping treatment is done to damping hole (10) inner wall, with the external screw thread phase-match of oil pipe (15), do the tapping treatment at apron (2) outward flange, with the screw thread phase-match of outer cylinder (4) tip, it has intercommunicating pore (12) to open at apron (2) middle part.

4. The dual-cylinder dual-rod viscous fluid damper as claimed in claim 1, wherein: the main body of the inner cylinder (3) is a cylinder body, both ends of the inner cylinder are subjected to tapping treatment, and the inner cylinder is connected with the cover plate (2) through threads of the inner cylinder connecting groove (11) on the cover plate (2).

5. The dual-cylinder dual-rod viscous fluid damper as claimed in claim 1, wherein: the main body of the outer cylinder (4) is a cylinder body, both ends of the outer cylinder are subjected to tapping treatment, the outer edge of the cover plate (2) is connected with the cover plate (2) through threads, and the outer edge of the outer cylinder is fixed on the base (5) through welding.

6. The dual-cylinder dual-rod viscous fluid damper as claimed in claim 1, wherein: the main body of the base (5) is an inverted T-shaped bearing platform, the upper surface of the base is a sunken arc surface, the size of the base is matched with that of the outer cylinder (4) and is welded with the outer cylinder (4), and a base connecting hole (13) is formed in the connecting part of the lower part of the base (5) and the vibration damping structure.

7. The dual-cylinder dual-rod viscous fluid damper as claimed in claim 1, wherein: the inner and outer cylinder communicating device (6) is formed by connecting a three-blade type connecting piece (14), an oil pipe (15), a hexagonal nut (16) and a rubber pipeline (17) through threads.

8. The internal and external cylinder communication device (6) according to claim 7, wherein: the three-blade type connecting piece (14) is formed by welding a bottom circular ring and three circular arc steel sheets, the inner diameter of the bottom circular ring is matched with the outer diameter of the oil pipe (15), the outer diameter of the bottom circular ring is slightly larger than the inner diameter of the bottom circular ring, tapping processing is carried out on the inner wall of the bottom circular ring and is matched with threads outside the oil pipe (15), the thickness of the three circular arc steel sheets is smaller than the difference between the inner diameter and the outer diameter of the bottom circular ring, the three circular arc steel sheets are welded and fixed on the outer side of the bottom circular ring at equal intervals, and tapping processing is carried out on the outer portions of the three circular arc steel sheets and is matched with internal threads of a hexagon nut (16).

9. The internal and external cylinder communication device (6) according to claim 7, wherein: the main body of the oil pipe (15) is a round steel pipe, tapping processing is carried out on the outer portion of the oil pipe, and the tapping processing is matched with the internal thread of the bottom ring of the three-blade type connecting piece (14) and the internal thread of the damping hole (10).

10. The internal and external cylinder communication device (6) according to claim 7, wherein: the main body of the hexagonal nut (16) is a hexagonal steel column, a concentric cylinder is dug in the hexagonal nut (16), the diameter of the dug cylinder is slightly smaller than the outer diameter of three circular arc steel sheets of the three-blade type connecting piece (14), tapping processing is conducted inside the hexagonal nut (16), the hexagonal nut is connected with the hexagonal nut through external threads of the three circular arc steel sheets of the three-blade type connecting piece (14), the main body of the rubber pipeline (17) is a pipeline made of rubber, the inner diameter of the rubber pipeline is matched with that of the oil pipe (15), and the rubber pipeline can be sleeved outside the oil pipe (15).

Technical Field

The invention relates to the field of viscous fluid dampers, in particular to a double-oil-cylinder double-rod type viscous fluid damper.

Background

At present, a common double-rod viscous fluid damper has two obvious defects, namely, firstly, because a damping hole of the conventional viscous fluid damper is arranged on a piston, the length of the damping hole determines the mechanical parameters of the damper, the piston is often very long, and the length of the damper is increased; secondly, the pressure of an oil cavity of the conventional viscous fluid damper is high during vibration reduction, so that the oil leakage from a driven sealing part becomes a common problem, and the vibration reduction capability of the viscous fluid damper can be completely lost if the oil leakage is large.

In order to reduce the pressure of the oil chamber, some methods are proposed at home and abroad, for example, patent No. CN 202010695763Y discloses a serial variable damping viscous fluid damper, which adopts a mode of connecting two viscous fluid dampers in series to increase the damping force, i.e. under the same total damping force, the oil chamber pressure can be greatly reduced and the risk of oil leakage can be reduced when the device is adopted, but the device has the defects of overlong length and low damping efficiency.

Aiming at the existing situation, the damping device adopts a nesting mode of two cylinder bodies, the two ends of the damping device are provided with the damping holes, and the distance between the two damping holes determines the mechanical parameters of the damper, so that the damping efficiency of the damping device is greatly improved, and the length of the damping device is effectively shortened. And the double-rod type design is adopted, so that the problem of unbalanced pressure intensity on two sides of the piston of the single-rod type viscous fluid damper is effectively solved. In addition, all the structures are connected by threads, so that the processing, manufacturing and assembling in the early stage and the maintenance, overhaul and replacement in the later stage are facilitated.

Disclosure of Invention

For convenience of description, the left, right, up and down are defined as directions shown in the abstract drawings, and it is specified that the motion from left to right is a forward motion and the motion from right to left is a backward motion.

Aiming at the problems, the invention provides a double-oil-cylinder double-rod viscous fluid damper, which comprises a piston device, a cover plate, an inner cylinder, an outer cylinder, a base and an inner and outer cylinder communication device. When the piston rod moves forwards, viscous fluid on the right side of the piston flows into the outer cylinder from the inner cylinder through the inner and outer cylinder communication devices, and meanwhile viscous fluid on the left side of the piston flows into the inner cylinder from the outer cylinder through the inner and outer rod communication devices. The invention aims to provide a double-oil-cylinder double-rod viscous fluid damper which is high in damping efficiency, long in service life, suitable for various scenes and convenient to maintain, overhaul and replace.

The invention is realized by adopting the following technical scheme:

a double-cylinder double-rod viscous fluid damper mainly comprises a piston device, cover plates, an inner cylinder, an outer cylinder, a base and inner and outer cylinder communication devices, wherein the piston device is arranged in the inner cylinder and respectively penetrates through communication holes of a front cover plate and a rear cover plate, the piston device freely moves in the inner cylinder, two ends of the inner cylinder are respectively screwed into inner cylinder connecting grooves of the front cover plate and the rear cover plate through threads, two ends of the outer cylinder are respectively screwed into the front cover plate and the rear cover plate through threads, the outer cylinder is welded on the base, the inner cylinder and the outer cylinder are mutually communicated through the inner and outer cylinder communication devices, and viscous fluid in the inner cylinder and the outer cylinder flows through the inner and outer cylinder communication devices to generate damping force.

The piston device is formed by welding a piston rod and a piston, the piston is a steel concentric circular cylinder, the outer diameter of the piston is consistent with the inner diameter of the inner cylinder, the inner diameter of the piston is matched with the diameter of the piston rod, the piston rod is a steel circular rod, a piston device connecting hole is formed in the position where the piston rod is connected with the vibration damping structure, and the piston device reciprocates to enable viscous fluid in the inner cylinder and the outer cylinder to flow through the damping hole to generate damping force.

Be provided with the inner casing spread groove on the apron, the size phase-match of the size of inner casing spread groove and inner casing, do the tapping processing including the inside of inner casing spread groove, with the screw thread phase-match of inner casing tip, inner casing accessible screw thread is connected with the inner casing spread groove on the apron, and open there is the damping hole in the inner casing spread groove both sides on the apron, supply viscous fluid to flow through and produce the damping force, the tapping processing is done to the damping hole inner wall, with the external screw thread phase-match of oil pipe, oil pipe accessible screw in damping hole, do the tapping processing at the apron outward flange, with the screw thread phase-match of outer casing tip, outer casing accessible screw thread is connected with the apron, it has the intercommunicating pore to open at the apron middle part, supply the piston rod to stretch out.

The main body of the inner cylinder is a cylinder body, the size of the inner cylinder is matched with that of the inner cylinder connecting groove, the two ends of the inner cylinder are subjected to tapping processing and are matched with the threads of the inner cylinder connecting groove, and the two ends of the inner cylinder can be respectively connected with the inner cylinder connecting grooves on the two cover plates through threads.

Its main part of outer jar is the barrel, and its size and apron outward flange size phase-match all do tapping at outer jar both ends and handle, with the screw thread phase-match of apron outward flange, outer jar both ends accessible screw thread is connected with two apron respectively to through welded fastening on the base.

The main body of the base is an inverted T-shaped bearing platform, the upper surface of the base is a concave arc surface, the size of the concave arc surface is matched with that of the outer cylinder and is welded with the outer cylinder, and a base connecting hole is formed in the joint of the lower part of the base and the vibration damping structure.

The inner and outer cylinder communicating device is formed by connecting a three-blade connecting piece, an oil pipe, a hexagon nut and a rubber pipeline through threads.

The three-blade type connecting piece is formed by welding a bottom circular ring and three circular-arc steel sheets, the inner diameter of the bottom circular ring is matched with the outer diameter of an oil pipe, the outer diameter of the bottom circular ring is slightly larger than the inner diameter of the bottom circular ring, tapping processing is carried out on the inner wall of the bottom circular ring and is matched with threads outside the oil pipe, the three-blade type connecting piece can be connected with the oil pipe through threads, the thickness of the three circular-arc steel sheets is smaller than the difference between the inner diameter and the outer diameter of the bottom circular ring, the three circular-arc steel sheets are welded and fixed on the outer side of the bottom circular ring at equal intervals, tapping processing is carried out on the outer portions of the three circular-arc steel sheets and is matched with the inner threads of a hexagon nut, and the three-blade type connecting piece can be connected with the hexagon nut through the outer threads of the three circular-arc steel sheets.

The main body of the oil pipe is a round steel pipe, the outer diameter of the main body is matched with the inner diameter of the bottom ring of the three-leaf connecting piece, tapping processing is carried out on the outer portion of the oil pipe and is matched with the inner threads of the bottom ring of the three-leaf connecting piece and the inner threads of the damping hole, the oil pipe can be connected with the three-leaf connecting piece through threads, and the oil pipe can be screwed into the damping hole through the threads.

The hexagonal nut is characterized in that the main body of the hexagonal nut is a hexagonal steel column, a concentric cylinder is dug in the hexagonal nut, the diameter of the dug cylinder is slightly smaller than the outer diameter of three arc-shaped steel sheets of the trilobal connecting piece, tapping processing is carried out inside the hexagonal nut, the hexagonal nut is connected with the hexagonal nut through external threads of the three arc-shaped steel sheets of the trilobal connecting piece, when a rubber pipeline is sleeved on an oil pipe provided with the trilobal connecting piece, the hexagonal nut can extrude the trilobal connecting piece, a sealing effect is achieved, and leakage of viscous fluid is prevented.

The main body of the rubber pipeline is a rubber pipeline, the inner diameter of the rubber pipeline is matched with the oil pipe, the rubber pipeline can be sleeved outside the oil pipe, viscous fluid can flow through the rubber pipeline, and the rubber pipeline is communicated with the inner cylinder and the outer cylinder.

The double-oil-cylinder double-rod viscous fluid damper provided by the invention has the following beneficial effects:

when the piston device reciprocates, the viscous fluid can flow into the outer cylinder from the inner cylinder through the inner and outer cylinder communication devices and can also flow into the inner cylinder from the outer cylinder through the inner and outer lever communication devices due to incompressibility of the volume of the viscous fluid. Compared with a double-rod type viscous fluid damper in the prior art, the double-oil-cylinder double-rod type viscous fluid damper provided by the invention adopts a double-oil-cylinder nesting mode, and as viscous fluid can pass through the damping holes twice in the movement process, the damping force is greatly improved within a limited length, the damping efficiency of the damper is improved, and the application scenes of the damper are increased. Due to the design of the double output rods, an oil liquid adjusting device is not needed to balance the pressure in the cylinder. In addition, due to the application of the threads, the invention can be processed, manufactured and finally assembled according to parts in different factories, is convenient to maintain and overhaul and has strong practicability.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a detailed view of a piston device of a dual-cylinder dual-rod viscous fluid damper according to an embodiment of the present invention;

FIG. 2 is a detailed view of a cover plate of a dual-cylinder dual-rod viscous fluid damper according to an embodiment of the present invention;

FIG. 3 is a detailed view of an inner cylinder of a dual-cylinder dual-rod viscous fluid damper according to an embodiment of the present invention;

FIG. 4 is a detailed view of the outer cylinder and the base of a dual-cylinder dual-rod viscous fluid damper according to an embodiment of the present invention;

FIG. 5 is a detailed view of the inner and outer cylinder communicating means of the dual-cylinder dual-rod viscous fluid damper according to the embodiment of the present invention;

FIG. 6 is a detailed view of a three-blade link of the inner and outer cylinder communication device of the dual-cylinder dual-rod viscous fluid damper according to the embodiment of the present invention;

fig. 7 is a detailed oil pipe diagram of an inner and outer cylinder communication device of a double-cylinder double-rod viscous fluid damper according to an embodiment of the present invention;

fig. 8 is a detailed view of a hexagon nut of an inner and outer cylinder communication device of a double-cylinder double-rod viscous fluid damper according to an embodiment of the present invention;

FIG. 9 is a schematic structural diagram of a dual-cylinder dual-rod viscous fluid damper according to an embodiment of the present invention;

fig. 10 is a cross-sectional view of a dual-cylinder dual-rod viscous fluid damper according to an embodiment of the present invention.

In the drawings, 1-a piston device; 2-cover plate; 3-inner cylinder; 4-outer cylinder; 5-a base; 6-inner and outer cylinder communicating device; 7-a piston rod; 8-a piston; 9-piston connection hole; 10-a damping orifice; 11-inner cylinder connecting groove; 12-a communication hole; 13-base attachment holes; 14-a trilobal connector; 15-oil pipe; 16-hex nut; 17-rubber pipe.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are merely exemplary of the invention, which may be embodied in various forms and arrangements, and that elements of the embodiments of the invention generally described and illustrated in the accompanying drawings may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like symbols and letters represent like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", "horizontal", and the like, indicate orientations or positional relationships that are conventionally used to place the product of the present invention, and are used for convenience in describing and simplifying the present invention, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be further noted that, unless otherwise specifically stated or limited, the terms "disposed," "connected" and "mounted" are to be construed broadly and may be, for example, fixedly, detachably, integrally, mechanically, electrically, directly or indirectly through intervening media, or as a communication between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the following, some embodiments of the invention are described in detail with reference to the drawings, and features in the following examples may be combined with each other without conflict.

Referring to fig. 1 to 10, the double-cylinder double-rod viscous fluid damper mainly comprises a piston device (1), a cover plate (2), an inner cylinder (3), an outer cylinder (4), a base (5) and an inner and outer cylinder communicating device (6), wherein threads are arranged on the inner side of an inner cylinder connecting groove (11) on the cover plate (2) and the outer edge of the cover plate (2), threads are arranged on the inner side of a damping hole (10) on the cover plate (2), threads are arranged on the inner side of two ends of the inner cylinder (3) and the inner side of two ends of the outer cylinder (4), and the outer cylinder (4) and the base (5) are fixed through welding.

In the embodiment, the size of the inner cylinder (3) is consistent with that of an inner cylinder connecting groove (11), two ends of the inner cylinder (3) are respectively connected with the inner cylinder connecting grooves (11) on two cover plates (2) through threads, the inner diameter of the inner cylinder (3) with the outer diameter of the piston (8) is consistent, the diameter of the piston rod (7) is consistent with that of a communicating hole (12) in the cover plate (2), the piston device (1) is installed in the inner cylinder (3), and the piston rod (7) penetrates through the communicating hole (12) in the cover plate (2) to extend out.

In the embodiment, the size of the outer cylinder (4) is consistent with that of the outer edge of the cover plate (2), the outer cylinder (4) is connected with the cover plate (2) through threads at two ends, the size of the outer cylinder (4) is consistent with that of the arc surface of the base (5), and the outer cylinder (4) is fixed with the base (5) through welding.

In the embodiment, the inner and outer cylinder communication device (6) is composed of a three-leaf type connecting piece (14), an oil pipe (15), a hexagonal nut (16) and a rubber pipeline (17), firstly, the three-leaf type connecting piece (14) is connected with the oil pipe (15) through the internal thread of a bottom circular ring, then, one end of the rubber pipeline (17) is sleeved on the oil pipe (15) at the inner side of the three-leaf type connecting piece (14), finally, the hexagonal nut (16) is screwed on the three-leaf type connecting piece (14) through the thread, meanwhile, the other end of the rubber pipeline (17) is also installed in the same way, so that the inner and outer cylinder communication device (6) is obtained, one end of the obtained inner and outer cylinder communication device (6) is connected with the damping hole (10) on the cover plate (2) corresponding to the inner cylinder (3) through the thread on the oil pipe (15), the other end of the obtained inner and outer cylinder communication device (6) is connected with the damping hole (10) on the cover plate (2) corresponding to the outer cylinder (4) through the thread on the oil pipe (15), after the connection is finished, the inner cylinder (3) and the outer cylinder (4) form a passage through the inner cylinder and outer cylinder communication devices (6) at the two ends, and viscous fluid is stored in the inner cylinder (3) and the outer cylinder (4).

The present invention is not limited to the above-described preferred embodiments, but various modifications and changes can be made by those skilled in the art, and any modifications, equivalent substitutions, improvements, etc., which are within the principle of the present invention, are included in the scope of the present invention.