CN219452745U - Ultra-short viscous fluid damper without auxiliary cylinder structure - Google Patents

Abstract

The utility model relates to the technical field of earthquake disaster protection and vibration control, in particular to an ultra-short viscous fluid damper without an auxiliary cylinder structure, which comprises a cylinder barrel, wherein a containing cavity with two open ends is formed in the cylinder barrel; the piston rod is coaxially arranged in the accommodating cavity, the piston rod is sleeved with a piston, two ends of the piston rod extend outwards respectively and are exposed out of the cylinder barrel, the outer wall surface of the piston and the inner wall surface of the cylinder barrel are arranged in a clearance way, and a channel is formed between the outer wall surface of the piston and the inner wall surface of the cylinder barrel; the two sealing elements are respectively and correspondingly arranged at two ends of the cylinder barrel, and two ends of the piston rod correspondingly penetrate out of the two sealing elements. The ultra-short viscous fluid damper without the auxiliary cylinder structure has the advantages of simple structure, convenience in installation, short installation length, good economy and the like.

Description

Ultra-short viscous fluid damper without auxiliary cylinder structure

Technical Field

The utility model relates to the technical field of earthquake disaster protection and vibration control, in particular to an ultra-short viscous fluid damper without a slave cylinder structure.

Background

The viscous fluid damper is a speed-related energy-consuming and damping device, has the characteristics of strong energy-consuming capacity, large stroke and the like, and is widely applied to the structural damping fields of bridges, buildings, large steel structures and the like. The basic working principle of the viscous fluid damper is that damping medium is extruded to flow through small holes in a piston at high speed, energy loss is generated in the flowing process, and external kinetic energy is converted into heat energy of the damping medium, so that damage to the structure caused by large loads such as earthquake, strong wind and the like is reduced.

At present, the viscous fluid damper generally comprises a main cylinder barrel, a guide sleeve, a compression nut, a piston rod, an auxiliary cylinder barrel, a rod end joint bearing and the like, wherein the piston moves in the main cylinder barrel, one end of the piston rod is connected with the rod end joint bearing, the other end of the piston rod moves in the auxiliary cylinder barrel, and the length of the auxiliary cylinder barrel is required to ensure the movement space of the piston rod, so that the axial length of the damper is longer, more parts are required, and the comprehensive cost is higher. In actual installation, the available space is limited, and more strict requirements are put forward on the installation space of the damper in many engineering sites at present, so that the total length of the damper is required to be as short as possible and the weight of the damper is required to be as light as possible under the condition of ensuring design parameters in order to ensure the convenience and rapidness of the installation of the damper, and the conventional damper structure is difficult to meet the requirements.

Disclosure of Invention

The utility model aims to solve the technical problems that: in order to solve the technical problems that the axial length of the existing damper is longer, more parts are needed, the comprehensive cost is higher, and the installation space is limited. The utility model provides an ultra-short viscous fluid damper without an auxiliary cylinder structure, which has the advantages of simple structure, convenience in installation, short installation length, good economy and the like. The technical scheme adopted for solving the technical problems is as follows: an ultra-short viscous fluid damper without a slave cylinder structure, comprising:

the cylinder barrel is hollow and forms a containing cavity with two open ends;

the piston rod is coaxially arranged in the accommodating cavity, a piston is sleeved on the piston rod, two ends of the piston rod extend outwards respectively and are exposed out of the cylinder barrel, and the outer wall surface of the piston and the inner wall surface of the cylinder barrel are arranged in a clearance way to form a channel between the two;

the two sealing elements are respectively and correspondingly arranged at two ends of the cylinder barrel, and two ends of the piston rod correspondingly penetrate out of the two sealing elements.

Further, the ultra-short viscous fluid damper without the auxiliary cylinder structure further comprises two fixing bases, wherein the two fixing bases are respectively arranged at two ends of the cylinder barrel, and two ends of the piston rod respectively correspondingly penetrate out of the two fixing bases.

Further, both fixing bases include: the cylinder barrel is characterized by comprising a transverse plate and longitudinal plates, wherein the longitudinal plates are vertically arranged on the transverse plate, annular grooves are formed in two opposite end faces of the two longitudinal plates, two ends of the cylinder barrel are respectively clamped in the corresponding annular grooves, through holes are formed in two opposite end faces of the two longitudinal plates, and two ends of the piston rod respectively penetrate through the corresponding through holes.

Further, the upper ends of the two longitudinal plates are connected by a connecting plate.

Further, a reinforcing rib is arranged between the transverse plate and the longitudinal plate.

Further, the ultra-short viscous fluid damper without the auxiliary cylinder structure further comprises two compression nuts, the two compression nuts are respectively arranged at the outer ends of the corresponding sealing elements, and two ends of the piston rod respectively penetrate out of the two compression nuts correspondingly.

Further, the ultra-short viscous fluid damper without the auxiliary cylinder structure further comprises two rod end joint bearings, the two rod end joint bearings are respectively and correspondingly arranged at two ends of the piston rod, and the rod end joint bearings are fixedly connected with one corresponding end of the piston rod.

Further, the ultra-short viscous fluid damper without the auxiliary cylinder structure further comprises two supporting seats, wherein the two supporting seats are in one-to-one correspondence with the two rod end joint bearings, and one end of each supporting seat is connected with the corresponding rod end joint bearing through a pin shaft.

Further, the piston rod and the piston are connected through threads in the ultra-short viscous fluid damper without the auxiliary cylinder structure.

Further, the ultra-short viscous fluid damper without the auxiliary cylinder structure is characterized in that an axial oil seal is arranged on the ring surface of the sealing piece, which is in contact with the cylinder barrel, and an axial oil seal is arranged on the ring surface of the compression nut, which is in contact with the cylinder barrel.

The ultra-short viscous fluid damper without the auxiliary cylinder structure has the advantages that the viscous damping material is arranged in the accommodating cavity, the piston rod can move along the axial direction to drive the piston to extrude the cavity on one side, so that the viscous damping material in the cavity on one side of the piston flows to the cavity on the other side through the channel on the piston to generate damping force, and the ultra-short viscous fluid damper without the auxiliary cylinder structure abandons the auxiliary cylinder, so that both ends of the piston rod can bear force to drive the piston to move to generate damping force, the number of parts is reduced, the assembly is convenient, the material cost is saved, the weight is also reduced, and the transportation is convenient.

Drawings

The utility model will be further described with reference to the drawings and examples.

FIG. 1 is a schematic view of a prior art viscous fluid damper with a secondary cylinder;

FIG. 2 is a schematic diagram of a prior art viscous fluid damper with a secondary cylinder;

FIG. 3 is a section B-B of FIG. 2;

FIG. 4 is a schematic view of an ultra-short viscous fluid damper of the present utility model without a slave cylinder structure;

FIG. 5 is a schematic diagram of the ultra-short viscous fluid damper of the present utility model without the slave cylinder structure;

FIG. 6 is a schematic diagram of an ultra-short viscous fluid damper of the present utility model without a slave cylinder structure;

FIG. 7 is a schematic view in section A-A of FIG. 6;

fig. 8 is a schematic view of a stationary base of an ultra-short viscous fluid damper without a slave cylinder structure according to the present utility model.

Reference numerals

1. A cylinder; 11. a first chamber; 12. a second chamber; 2. a piston rod; 3. a piston; 4. a seal; 5. a fixed base; 51. a transverse plate; 52. a longitudinal plate; 53. an annular groove; 54. a through hole; 55. a connecting plate; 56. reinforcing ribs; 6. a compression nut; 7. a rod end joint bearing; 8. a support base; 100. an upper beam surface; 200. a lower beam surface; 310. and a secondary cylinder.

Detailed Description

The utility model will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the utility model and therefore show only the structures which are relevant to the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 4 to 8, which are preferred embodiments of the present utility model, an ultra-short type viscous fluid damper having a sub-cylinder-free structure, comprises: the cylinder 1, piston rod 2 and sealing member 4, the inside cavity of cylinder 1 forms the open-ended chamber that holds in both ends, and the coaxial setting of piston rod 2 is holding the intracavity, and the cover is equipped with piston 3 on the piston rod 2, and the both ends of piston rod 2 outwards extend respectively, expose in cylinder 1, and the outer wall of piston 3 and the inner wall clearance setting of cylinder 1 form the passageway between the two, and sealing member 4 is two, and two sealing members 4 correspond the setting respectively at the both ends of cylinder 1, and two sealing members 4 are worn out in the both ends correspondence of piston rod 2.

The ultra-short viscous fluid damper without the auxiliary cylinder structure provided by the utility model has the advantages that the auxiliary cylinder barrel is omitted, so that both ends of the piston rod 2 can be stressed to drive the piston to move to generate damping force, the number of parts is reduced, the assembly is convenient, the material cost is saved, the weight is also reduced, and the transportation is convenient.

The piston rod 2 and the piston 3 are connected through threads, so that the piston 3 is convenient to install.

As shown in fig. 5, in order to prevent the ultra-short viscous fluid damper without the auxiliary cylinder structure from being in the practical application process, the ultra-short viscous fluid damper further comprises two fixing bases 5, wherein the two fixing bases 5 are respectively arranged at two ends of the cylinder barrel 1, and two ends of the piston rod 2 respectively correspondingly penetrate out of the two fixing bases 5. The damper is fixedly connected with the lower beam surface 200 through two fixed bases 5.

As shown in fig. 8, both the fixing bases 5 include: the transverse plate 51 and the longitudinal plates 52, the longitudinal plates 52 are vertically arranged on the transverse plate 51, annular grooves 53 are formed in two opposite end faces of the two longitudinal plates 52, two ends of the cylinder barrel 1 are respectively clamped in the corresponding annular grooves 53, the two ends of the cylinder barrel can be propped against, and axial displacement and dislocation of the cylinder barrel can be effectively reduced when an earthquake occurs. Through holes 54 are formed in two opposite end surfaces of the two longitudinal plates 52, and two ends of the piston rod 2 respectively pass through the corresponding through holes 54.

In order to prevent the lower platform fixing base 5 from generating axial displacement due to overlarge load when the damper is pulled and pressed in the practical application process, thereby influencing the normal operation of the damper, the upper ends of the two longitudinal plates 52 are connected through the connecting plate 55. The connection plate 55 is welded to the upper ends of the two longitudinal plates 52.

In order to increase the stability of the fixing base 3, a reinforcing rib 56 is provided between the transverse plate 51 and the longitudinal plate 52.

As shown in fig. 7, the ultra-short viscous fluid damper without the auxiliary cylinder structure further comprises two compression nuts 6, wherein the two compression nuts 6 are respectively arranged at the outer ends of the corresponding sealing elements 4, and two ends of the piston rod 2 respectively penetrate out of the two compression nuts 6 correspondingly.

The ultra-short viscous fluid damper without the auxiliary cylinder structure further comprises two rod end joint bearings 7, wherein the two rod end joint bearings 7 are respectively and correspondingly arranged at two ends of the piston rod 2, and the rod end joint bearings 7 are fixedly connected with one corresponding end of the piston rod 2.

The ultra-short viscous fluid damper without the auxiliary cylinder structure further comprises two supporting seats 8, the two supporting seats 8 and the two rod end joint bearings 7 are in one-to-one correspondence, one end of each supporting seat 8 is connected with the corresponding rod end joint bearing 7 through a pin shaft, and the damper is fixedly connected with the upper beam surface 100 through the supporting seats 8.

An axial oil seal is arranged on the ring surface of the sealing element 4, which is in contact with the cylinder barrel 1, the sealing element 4 can be a guide sleeve, and an axial oil seal is arranged on the ring surface of the compression nut 6, which is in contact with the cylinder barrel 1, so that the sealing performance of the damper is ensured.

The simple assembly process of the damper may be: firstly, the piston 3 and the piston rod 2 are in threaded connection, then the piston is installed in the cylinder barrel 1, a sealing element 4 is sleeved on the piston rod 2 and is installed at one end of the inner wall of the cylinder barrel 1, then a compression nut 6 is sleeved on the same end of the piston rod 2 and is installed at the inner wall of the cylinder barrel 1 and is contacted with the previous sealing element 4, and therefore packaging of one end of the cylinder barrel 1 is completed. The sealing element 4 and the compression nut 6 at the other end are installed, and the steps are repeated, so that the packaging of the two ends of the cylinder barrel 1 is completed.

Then, the two ends of the damper at present are mounted with the corresponding fixing bases 5, in detail, one end of the damper is clamped in the annular groove 53 of the longitudinal plate 52, the piston rod 2 passes through the through hole 54 on the longitudinal plate 52, and the other end of the damper also repeats the above steps. When both ends are closely attached to the fixing bases 5, the connection plates 55 are welded to both fixing bases 5.

Next, upper rod end joint bearings 7 are attached to both ends of the piston rod 2, and the fixing base 5 and the lower beam surface 200 are fixed, thereby fixing the cylinder portion of the damper.

And connecting the hole of the rod end joint bearing 7 with the supporting seat 8 through a pin shaft, and fixedly connecting the supporting seat 8 with the upper beam surface 100 to finally finish assembly.

The relevant seals, fixing parts, etc. of the ultra-short viscous fluid damper are understood and readily implemented by those skilled in the art and therefore are not described in detail herein.

When earthquake displacement occurs, the piston rod 2 moves relatively to drive the piston 3 to reciprocate in the cylinder barrel 1 to generate pressure difference, so that viscous fluid rubs through a channel in the piston 34 to consume earthquake energy in a heat generating manner, and the purposes of energy consumption and shock absorption are achieved.

By comparing fig. 1 to 3 and 4, it can be found that the conventional viscous fluid damper is designed with the auxiliary cylinder tube 310, and two ends of the viscous fluid damper are respectively fixed with the upper end surface and the lower end surface through the auxiliary cylinder connecting piece and one end of the piston rod and the rod end joint bearing through the supporting seat. The auxiliary cylinder barrel 310 is omitted, so that the two ends of the piston rod 2 can bear force to drive the piston 3 in the cylinder barrel 1 to reciprocate, the piston is fixed with the upper beam surface 100 through the supporting seat 8, and the cylinder barrel 1 is fixed on the lower beam surface 200 through the fixing base 5.

TABLE 1 data comparison of typical specification and model of ultra short and general viscous fluid dampers

By comparing the data in table 1, we can intuitively understand that the ultrashort viscous fluid damper has a certain reduction in both the product weight and the installation length, and the larger the ultrashort viscous fluid damper stroke under the same load is, the more the reduced weight and the installation length are, and the larger the ultrashort viscous fluid damper load under the same stroke is, the less the reduced weight and the installation length are. Therefore, the ultra-short viscous fluid damper can play the greatest role in the occasion of medium and low load and large stroke.

On the other hand, as can be obtained from the data in table 1, the weight of the ultra-short viscous fluid damper is reduced, the material cost is saved, the utility model is more economical, the parts such as the auxiliary cylinder barrel 1, the auxiliary cylinder connecting piece and the like in the general viscous fluid damper are also abandoned, the number of parts of the product is reduced, the process of assembling the damper by workers is simplified, and the production and assembly efficiency is greatly improved.

In addition, because the length of the product is shortened and the weight is reduced, the convenience is provided for the transportation, the loading and unloading and the field installation of the product, and the installation difficulty is reduced.

However, because the structural design of the auxiliary cylinder 310 and the two ends of the piston rod 2 exposed is reduced, the two ends of the piston rod 2 are affected by the external environment, and phenomena such as corrosion and abrasion are more likely to occur, so that a further preferred scheme is that dustproof protection covers are added at the two ends of the piston rod.

In summary, according to the comparison of a normally viscous fluid damper and the damper, the damper can better utilize limited space and reduce weight under the same load stroke; not only can save materials and be more economical, but also is favorable for assembly and disassembly, and can be applied to more occasions.

With the above-described preferred embodiments according to the present utility model as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined as the scope of the claims.

Claims (10)

1. An ultra-short viscous fluid damper without a slave cylinder structure, comprising:

the cylinder barrel (1), wherein the cylinder barrel (1) is internally hollow to form a containing cavity with two open ends;

the piston rod (2) is coaxially arranged in the accommodating cavity, the piston rod (2) is sleeved with the piston (3), two ends of the piston rod (2) extend outwards respectively and are exposed out of the cylinder barrel (1), the outer wall surface of the piston (3) and the inner wall surface of the cylinder barrel (1) are arranged in a clearance mode, and a channel is formed between the outer wall surface of the piston (3) and the inner wall surface of the cylinder barrel (1);

the two sealing elements (4) are arranged at the two ends of the cylinder barrel (1) respectively, and the two ends of the piston rod (2) correspondingly penetrate out of the two sealing elements (4).

2. The ultra-short viscous fluid damper without the auxiliary cylinder structure according to claim 1, further comprising two fixing bases (5), wherein the two fixing bases (5) are respectively arranged at two ends of the cylinder barrel (1), and two ends of the piston rod (2) respectively penetrate out of the two fixing bases (5) correspondingly.

3. Ultra-short viscous fluid damper without slave cylinder structure according to claim 2, characterized in that both fixing bases (5) comprise: the cylinder barrel comprises transverse plates (51) and longitudinal plates (52), wherein the longitudinal plates (52) are vertically arranged on the transverse plates (51), annular grooves (53) are formed in two opposite end faces of the two longitudinal plates (52), two ends of the cylinder barrel (1) are respectively clamped in the corresponding annular grooves (53), through holes (54) are formed in two opposite end faces of the two longitudinal plates (52), and two ends of the piston rod (2) respectively penetrate through the corresponding through holes (54).

4. An ultra-short viscous fluid damper of sub-cylinder-free construction according to claim 3, characterized in that the upper ends of the two longitudinal plates (52) are connected by a connecting plate (55).

5. Ultra-short viscous fluid damper of sub-cylinder-free construction according to claim 4, characterized in that a stiffening rib (56) is provided between the transverse plate (51) and the longitudinal plate (52).

6. The ultra-short type viscous fluid damper without the auxiliary cylinder structure according to claim 1, further comprising two compression nuts (6), wherein the two compression nuts (6) are respectively arranged at the outer ends of the corresponding sealing elements (4), and two ends of the piston rod (2) respectively penetrate through the two compression nuts (6).

7. The ultra-short type viscous fluid damper without a slave cylinder structure according to claim 5, further comprising two rod end joint bearings (7), wherein the two rod end joint bearings (7) are respectively and correspondingly arranged at two ends of the piston rod (2), and the rod end joint bearings (7) are fixedly connected with one corresponding end of the piston rod (2).

8. The ultra-short type viscous fluid damper without a slave cylinder structure according to claim 7, further comprising two supporting seats (8), wherein the two supporting seats (8) are in one-to-one correspondence with the two rod end joint bearings (7), and one end of the supporting seat (8) is connected with the corresponding rod end joint bearing (7) through a pin shaft.

9. Ultra-short viscous fluid damper without slave cylinder structure according to claim 1, characterized in that the piston rod (2) and the piston (3) are connected by screw threads.

10. Ultra-short viscous fluid damper without auxiliary cylinder structure according to claim 6, characterized in that the sealing element (4) is provided with an axial oil seal on the contact ring surface of the cylinder (1), and the compression nut (6) is provided with an axial oil seal on the contact ring surface of the cylinder (1).