CN209925858U - Tuned mass damping support for multidimensional viscous damping - Google Patents

Abstract

The utility model relates to a multi-dimensional viscous damping tuning mass shock-absorbing support, which comprises a load-bearing hanger rod, a transverse diagonal brace, a longitudinal diagonal brace, a horizontal bearing cross-bar, a wire groove, a fixed angle steel and a tuning vibration damping box. In order to accommodate pipelines, horizontal bearing bars are arranged at the lower part of the wire troughs at certain distances along the length direction, and the wire troughs are fixed to the horizontal bearing bars through fixed angle steel, and the horizontal bearing bars pass through the load-bearing booms, The transverse diagonal braces and the longitudinal diagonal braces are connected with the main structure to form a stable structure. Tuning vibration damping boxes are arranged inside the wire grooves at regular intervals along the length direction of the wire grooves. Different tuning frequencies are used to absorb and vibrate energy in a wide frequency band. Energy is dissipated in multiple directions through viscous dampers. The utility model has the advantages of simple structure, strong energy consumption capability, convenient installation and the like, and can be used not only for new anti-seismic supports, but also for reconstruction of existing anti-seismic supports, thereby improving the safety of mechanical and electrical engineering pipelines.

Description

A multi-dimensional viscous damping tuned mass shock mount

technical field

The utility model relates to the technical field of disaster prevention and protection of engineering pipeline facilities, in particular to a multi-dimensional viscous damping tuning mass shock-absorbing support.

Background technique

With the continuous development of social economy and scientific and technological level, the attention on the disaster prevention capability of specific structures has gradually shifted to the attention of the comprehensive urban disaster prevention capability. As an important part of the urban complex system, the safety and disaster prevention capability of the mechanical and electrical engineering pipelines have attracted increasing attention. my country's "Code for Seismic Design of Buildings" G50011-2010 stipulates that "non-structural components, including non-structural components of buildings and mechanical and electrical equipment attached to buildings, themselves and their connection with the main body of the structure should be designed for earthquake resistance." Therefore, in order to improve the mechanical and electrical engineering pipeline The standardization and high performance of seismic support have gradually become an important direction of development in the industry.

Since the vibration control technology can effectively suppress the excessive dynamic response of the controlled structure caused by the power input such as earthquake and impact, so as to protect the disaster prevention safety of the controlled structure, it has been used in the development of new anti-seismic supports and hangers in recent years. A shock-absorbing mechanism for seismic support (ZL201820475040.5), a reinforced shock-absorbing shock-absorbing support (ZL201721571457.3), a high-efficiency shock-absorbing damper for seismic support of power equipment (ZL201820291917.5), etc. In general, these devices still use the control idea of energy dissipation and vibration reduction, while another major type of tuning vibration reduction concept in vibration control technology has not been introduced into the development field of anti-seismic support and hanger devices. Tuned Mass Damper (TMD) system is a type of structural passive vibration reduction control system, which consists of a main structure and sub-structures attached to the main structure. Among them, the substructure includes solid mass, spring shock absorber and damper, etc. It has mass, stiffness and damping. By changing the mass or stiffness, the frequency of the substructure is adjusted to make it as close to the fundamental frequency or excitation frequency of the main structure as possible. When the structure is excited to vibrate, the substructure will generate an inertial force opposite to the vibration direction of the structure and act on the main structure, so that the vibration response of the main structure is attenuated and controlled.

The utility model is based on the technical concept of tuning vibration damping, combined with viscous damping energy dissipation, and develops a multi-dimensional viscous damping energy dissipation tuned mass damping bracket, which realizes the load-bearing deformation control and energy consumption damping functions of electromechanical engineering pipelines, and is The disaster prevention protection of the anti-seismic support and hanger provides a new concept of vibration reduction technology.

Utility model content

The purpose of the utility model is to overcome the problems existing in the prior art, and to provide a multi-dimensional viscous damping tuned mass shock-absorbing support, which is used for the load-bearing and earthquake disaster protection of electromechanical engineering pipelines, and provides a different concept of traditional energy dissipation and vibration reduction. Tuned-mass shock-absorbing brackets use additional distributed mass combined with viscous damping energy dissipation technology to dissipate the energy input by dynamic external loads, while maintaining space utilization efficiency. It has the characteristics of simple structure, strong energy dissipation capacity, and standardized production.

In order to realize the above-mentioned technical purpose and achieve the above-mentioned technical effect, the present invention realizes through the following technical solutions:

A multi-dimensional viscous damping tuned mass shock-absorbing bracket, comprising a load-bearing boom, a transverse diagonal brace, a longitudinal diagonal brace, a horizontal bearing cross-bar, a wire groove, a fixed angle steel and a tuned vibration damping box, the wire groove is used for accommodating pipelines, Horizontal bearing bars are arranged at the lower part of the wire trough at regular intervals along the length of the wire trough, and the wire trough is fixedly connected to the horizontal bearing bars through the fixed angle steel. The longitudinal diagonal struts are connected with the main structure to form a stable structure, and tuning and vibration-damping boxes are arranged inside the wire grooves at intervals along the length direction of the wire grooves for tuning and vibration-damping.

Further, the tuning damping box is composed of a tuning mass, a sleeve spring, a damping box shell, a viscous damper and a damping box fixing angle steel, and the damping box shell is fixed by the damping box. The bottom surfaces are fixed together, the two ends of the sleeve spring are respectively hinged to the tuning mass and the shock-absorbing box shell in the positive direction to provide elastic stiffness, and the two ends of the viscous damper are respectively connected to the tuning mass and the shock-absorbing box. The housings are hinged together diagonally to provide damping, and when the slot vibrates, the tuned mass absorbs the vibrational energy and dissipates it through viscous dampers.

Further, the tuning mass is a steel mass block, and the interior of the steel mass block is solid or hollow, and it is convenient to fill with different quality materials when the steel mass is hollow.

Further, the sleeve spring is composed of a sleeve and a spring, the sleeve can expand and contract freely with the deformation of the spring and control the deformation direction of the spring, and the spring can change the stiffness by restraining the deformation of the coils at both ends thereof.

Further, an exhaust hole is provided on the shell of the vibration damping box to ensure a constant air pressure inside the tuned vibration damping box.

Further, the load-bearing suspenders, transverse diagonal braces, longitudinal diagonal braces and horizontal load-bearing cross bars adopt C-shaped channel steel or light steel tube structures, and the transverse diagonal bracing and longitudinal diagonal bracing are respectively arranged laterally and longitudinally along the wire groove, and the One end of the load-bearing boom, the horizontal diagonal brace and the longitudinal diagonal brace is hinged with the horizontal load-bearing crossbar, and the other end is hinged with the main structure to form a stable space structure and provide the installation space for the load-bearing wire trough and the tuned vibration-damping box.

Further, the wire trough is a thin-walled box made of steel or stainless steel, and is arranged along the corresponding pipeline arrangement direction. The upper cover of the thin-walled box can be opened to facilitate pipeline installation and maintenance. The two side plates of the thin-walled box body are fixedly connected with the horizontal load-carrying bars by means of fixed angle steel and corresponding bolts.

The beneficial effects of the present utility model are:

The shock-absorbing support of the utility model has good integration and flexible arrangement, does not require additional space, and has little impact on the current ordinary shock-absorbing support. In addition to the newly-built shock-absorbing support, the shock-absorbing support can also be used for upgrading and upgrading the existing shock-absorbing support; there are a plurality of tuned vibration-damping boxes, The tuning vibration reduction frequency of each box can be different, so the tuning frequency can be reasonably designed so that the shock absorption bracket has a wider vibration reduction frequency band; Under the structural deformation, the shock-absorbing bracket can also provide stable damping and energy dissipation capacity; under the action of dynamic disasters, the shock-absorbing bracket of the utility model not only consumes part of the vibration energy by tuning and damping, but also effectively reduces the vibration response of the pipeline. The force transmitted to the main structure is reduced; it can be widely used in the earthquake-resistant and disaster-proof protection of mechanical and electrical engineering equipment pipelines in engineering structures.

Description of drawings

Fig. 1 is the cross-sectional structural schematic diagram of the shock-absorbing support of the present invention;

2 is a schematic diagram of the longitudinal cross-sectional structure of the shock-absorbing support of the present invention;

3 is a schematic diagram of the horizontal cross-sectional structure of the shock-absorbing support of the present invention;

FIG. 4 is a schematic cross-sectional structural diagram of the tuning vibration-damping box of the present invention.

Description of symbols in the figure: load-bearing boom 1; transverse diagonal brace 2; longitudinal diagonal brace 3; horizontal load-bearing crossbar 4; wire groove 5; wire groove fixed angle steel 6; tuning damping box 7; tuning mass 71; sleeve spring 72 ; vibration damping box shell 73 ; viscous damper 74 ; vibration damping box fixed angle 75 .

Detailed ways

The present utility model will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

As shown in Figures 1 and 3, a multi-dimensional viscous damping tuned mass shock absorber bracket includes a load-bearing boom 1, a transverse diagonal brace 2, a longitudinal diagonal brace 3, a horizontal load-bearing crossbar 4, a wire groove 5, and a fixed angle steel 6 And the tuned vibration damping box 7, the wire groove 5 is used for accommodating the pipeline, in this embodiment, can be used for accommodating the electromechanical engineering pipeline, along the length direction of the wire groove 5, a horizontal load-carrying crossbar 4 is arranged at the lower part of the wire groove 5 at regular intervals. , and the wire slot 5 is fixedly connected with the horizontal bearing bar 4 through the fixed angle steel 6, and the horizontal bearing bar 4 is connected with the main structure through the bearing boom 1, the transverse diagonal brace 2 and the longitudinal diagonal brace 3 to form a stable structure, In this embodiment, the main structure is a conventional frame structure in the field or other conventional structures, and tuning and vibration damping boxes 7 are arranged inside the wire slot 5 at regular intervals along the length of the wire slot 5. In this embodiment, Tuning and damping boxes 7 are evenly distributed along the axis of wire slot 5 for tuning and damping.

As shown in FIG. 2 and FIG. 4 , the tuning damping box 7 is composed of a tuning mass 71 , a sleeve spring 72 , a damping box shell 73 , a viscous damper 74 and a damping box fixing angle steel 75 . The box shell 73 is fixedly connected to the inner bottom surface of the wire slot 5 through the vibration-damping box fixing angle steel 75, and the two ends of the sleeve spring 72 are respectively positively hinged with the tuning mass 71 and the vibration-damping box shell 73 to provide elasticity. Rigidity, the two ends of the viscous damper 74 are hinged obliquely with the tuning mass 71 and the damping box shell 73 respectively to provide damping. The tuning damping box 7 has different tuning frequencies. When the wire slot 5 vibrates, The tuning mass 71 absorbs the vibration energy and dissipates the energy through the viscous damper 74, thereby absorbing the vibration energy of the wire slot 5 in multiple directions and a wide frequency band.

The tuning mass 71 is a steel mass block, and the inside of the steel mass block is solid or hollow, and when it is hollow, it is convenient to fill with different quality materials to adjust the self-vibration frequency.

The sleeve spring 72 is composed of a sleeve and a spring. The sleeve can expand and contract freely with the deformation of the spring and control the deformation direction of the spring. The spring can adjust the self-vibration frequency by suppressing the deformation of the coils at both ends of the spring to change the stiffness.

The damping box shell 73 is provided with an exhaust hole to ensure that the air pressure inside the tuning damping box 7 is constant.

The load-bearing boom 1, the transverse diagonal brace 2, the longitudinal diagonal brace 3 and the horizontal load-bearing cross bar 4 adopt the structure of C-shaped channel steel or light steel pipe, and the transverse diagonal brace 2 and the longitudinal diagonal brace 3 are respectively along the horizontal and vertical direction of the wire groove 5. Arrangement, one end of the load-bearing boom 1, the horizontal diagonal brace 2, and the longitudinal diagonal brace 3 are hinged with the horizontal load-bearing cross-bar 4, and the other end is hinged with the main structure to form a stable space structure and provide a load-bearing wire slot 5 And the installation space of tuned vibration damping box 7.

The wire slot 5 is a thin-walled box made of steel or stainless steel, and is arranged along the corresponding pipeline arrangement direction. The upper cover of the thin-walled box can be opened to facilitate pipeline installation and maintenance. The two side plates of the wall box body are fixedly connected with the horizontal bearing bar 4 by means of fixed angle steel 6 and corresponding bolts.

Below in conjunction with the above-mentioned technical solutions and accompanying drawings, the implementation steps of the present utility model during specific installation and use are described in detail:

1) According to the relevant characteristics of the main structure and electromechanical equipment, determine the relevant parameters of the shock-absorbing bracket, especially the specific parameters and dimensions of each tuned shock-absorbing box 7 .

2) According to the design specifications, process the tuning mass 71, the sleeve spring 72 and the damping box shell 73 in the factory, assemble the side wall and bottom plate of the damping box shell 73, install the socket spring 72 on the bottom and side of the tuning mass 71, The viscous damper 74 is connected between the tuning mass 71 and the damping box housing 73; the bottom end of the upper sleeve spring 72 is connected to the top surface of the tuning mass 71, the top plate of the damping box housing 73 is covered, and the sleeve The spring 72 is fixed to the top plate of the damping box housing 73 , and the manufacture of the tuning damping box 7 is completed.

3) According to the design and positioning, connect the load-bearing boom 1, the horizontal diagonal brace 2 and the longitudinal diagonal brace 3 to the main structure, and then use the adjustable hinge to connect the load-bearing boom 1, the horizontal diagonal brace 2 and the longitudinal diagonal brace 3 to the horizontal load-bearing horizontal Rods 4 are connected to form a stable space structure.

4) Use the damping box fixing angle steel 75 to fix the tuning damping box 7 in the wire groove 5 according to the design position, and then use the fixed angle steel 6 to fix the wire groove 5 on the upper surface of the horizontal bearing cross bar 4.

5) According to the field test results, adjust the mass of the tuning mass 71 and the stiffness of the sleeve spring 72 in the tuning damping box 7 .

The principle of the utility model

In the present utility model, the load-bearing hanger rod 1, the horizontal diagonal brace 2, the longitudinal diagonal brace 3 and the horizontal load-bearing crossbar 4 together form a stable structure, which provides a load-bearing system and installation space for the wire groove 5, and the tuning and vibration reduction in the wire groove 5 The box 7 provides a control force with opposite phases to dissipate the vibration energy; a plurality of tuning vibration damping boxes 7 are arranged in the wire slot 5 along the length direction, and different tuning frequencies can be selected according to the different response characteristics of different parts of the pipeline system, thereby expanding the tuning The frequency band of vibration damping can achieve better vibration damping effect; the tuning mass 71 is used as a mass unit, the sleeve spring 72 provides stiffness, and the viscous damper 74 provides damping, forming a vibrator for frequency modulation vibration. When the pipeline vibrates, regardless of the magnitude of the vibration, the load-bearing boom 1, the transverse diagonal brace 2, the longitudinal diagonal brace 3 and the horizontal bearing cross-bar 4 bear and transmit the vibration load of the pipeline. At the same time, due to the principle of tuning resonance, part of the vibration energy is absorbed The tuning mass 71 transmitted to the tuning vibration damping box 7 causes the tuning mass 71 to vibrate in multiple dimensions in the box, thereby driving the viscous damper 74 to deform and dissipate the vibration energy.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. For those skilled in the art, the present utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims (7)

1. A multi-dimensional viscous damping tuned mass shock-absorbing support, characterized in that it comprises a load-bearing boom (1), a transverse diagonal brace (2), a longitudinal diagonal brace (3), a horizontal load-bearing crossbar (4), a wire groove (5), the fixed angle steel (6) and the tuned vibration damping box (7), the wire groove (5) is used for accommodating the pipeline, and a horizontal bearing is arranged at the lower part of the wire groove (5) at regular intervals along the length direction of the wire groove (5) A cross bar (4), and the wire groove (5) is fixed to the horizontal bearing bar (4) through the fixed angle steel (6), and the horizontal bearing bar (4) is connected by the load bearing boom (1), the horizontal diagonal brace (2) and the longitudinal diagonal brace (3) are connected with the main structure to form a stable structure, and along the length direction of the wire slot (5), a tuning vibration damping box (7) is arranged inside it at regular intervals for tuning vibration damping. . 2. The multi-dimensional viscous damping tuning mass shock-absorbing bracket according to claim 1, wherein the tuning and shock-absorbing box (7) is composed of a tuning mass (71), a sleeve spring (72), a shock-absorbing box shell (73), a viscous damper (74) and a vibration-damping box fixing angle steel (75), the vibration-damping box shell (73) is fixedly connected to the inner bottom surface of the wire groove (5) through the vibration-damping box fixing angle steel (75) Together, the two ends of the sleeve spring (72) are respectively positively hinged with the tuning mass (71) and the vibration damping box shell (73) to provide elastic stiffness, and the viscous damper (74) The ends are respectively hinged obliquely with the tuning mass (71) and the vibration damping box shell (73) to provide damping. When the slot (5) vibrates, the tuning mass (71) absorbs the vibration energy and passes through the viscous damper. (74) Dissipate energy. 3. The multi-dimensional viscous damping tuning mass shock-absorbing support according to claim 2, wherein the tuning mass (71) is a steel mass block, and the interior of the steel mass block is solid or hollow, and it is easy to fill when it is hollow Different quality materials. 4. The multi-dimensional viscous damping tuned mass shock-absorbing support according to claim 2, wherein the sleeve spring (72) is composed of a sleeve and a spring, and the sleeve is free to expand and contract with the deformation of the spring and control the spring In the deformation direction, the spring changes the stiffness by restraining the deformation of the coils at both ends of the spring. 5. The multi-dimensional viscous damping tuning mass shock-absorbing bracket according to claim 2, characterized in that, an exhaust hole is provided on the vibration-damping box shell (73) to ensure that the inside of the tuning vibration-damping box (7) Air pressure is constant. 6. The multi-dimensional viscous damping tuned mass shock-absorbing support according to claim 1, characterized in that the load-bearing boom (1), the transverse diagonal brace (2), the longitudinal diagonal brace (3) and the horizontal load-bearing crossbar (4) C-shaped channel steel or light steel pipe structure is adopted, the transverse diagonal bracing (2) and the longitudinal diagonal bracing (3) are arranged laterally and longitudinally along the wire groove (5) respectively, the load-bearing hanger (1), the horizontal diagonal bracing One end of the brace (2) and the longitudinal diagonal brace (3) is hinged with the horizontal bearing bar (4), and the other end is hinged with the main structure, forming a stable space structure, providing the bearing wire slot (5) and the tuning reduction. Vibration box (7) installation space. 7. The multi-dimensional viscous damping tuned mass shock-absorbing support according to claim 1, wherein the wire groove (5) is a thin-walled box made of steel or stainless steel, and is arranged along the corresponding pipeline direction The upper cover plate of the thin-walled box body can be opened to facilitate pipeline installation and maintenance, and the two side plates of the thin-walled box body are made of fixed angle steel (6) and corresponding bolts and horizontal bearing bars (4) fixed.

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