CN106365020B - A kind of novel elevator tractor belt is anti-to wave vibration absorber - Google Patents

Abstract

The invention relates to a novel belt-type anti-sway vibration damping device for an elevator traction machine. It has an elevator traction machine, the lower end of the elevator traction machine is fixed on the base, and the lower end of the base is provided with parallel I-shaped steel supports; a vibration isolation and anti-swing component is also arranged between the base and the I-steel supports; The swing assembly includes a telescopic column, a vibration-isolation counterweight, a vibration-isolation steel frame, a vibration-isolation damping layer and a vibration-isolation pad. The belt-type anti-sway vibration damping device of the new elevator traction machine has a simple structure. The lateral stiffness and longitudinal stiffness of its support are improved by installing a vibration isolation and anti-sway component at the lower end of the traction machine, and the vibration isolation in the vertical direction is ensured. At the same time, the lateral anti-sway performance is effectively increased, thereby improving the noise reduction performance, vibration isolation performance and anti-sway performance of the elevator as a whole.

Description

A new belt-type anti-sway vibration damping device for elevator traction machine

technical field

The invention relates to the technical field of vibration damping devices, in particular to a novel belt-type anti-sway vibration damping device for an elevator traction machine.

Background technique

With the continuous development of society, high-rise buildings stand erect. In many high-rise buildings, elevators are an indispensable and important part. The operation of the elevator usually requires a traction machine to be driven, and the elevator traction machine is usually installed at the top or bottom of the elevator shaft. During the normal operation of the elevator, there will be a lot of vibration and noise. The vibration of the elevator usually manifests as vertical vibration and lateral free swing of the traction machine during normal operation; the noise of the elevator is mainly the elevator traction machine, especially It is most obvious when the elevator stops halfway. This kind of noise will have a great impact on the lives of residents on the top floor or the ground floor. Later, people added a vibration reduction and noise reduction device to carry out vibration isolation and noise reduction to the elevator traction machine. In the utility model patent ZL200720172746.6, a detachable elevator vibration and noise reducer is disclosed. This detachable elevator vibration and noise reducer includes two sets of composite One side of the inertia block is provided with a groove, the composite damping part is set in the groove, the balance adjustment part passes through the inertia block and the composite damping part to connect the two together, and the two inertia blocks are connected by a file connection. In this way, a variety of elastic materials can be used to absorb and block vibrations, and a balance adjustment system can be set to fully absorb and block vibrations, thereby reducing noise to a large extent. Such a device can effectively reduce vibration and noise for the elevator traction machine, but the elevator traction machine will swing left and right when the vibration amplitude is large during normal operation, and long-term operation will seriously affect the elevator traction. The fixing strength of the machine will affect the safety of the elevator operation.

In summary, the existing elevator traction machine vibration damping device still has great defects in structure and design, and cannot meet the needs of people's lives.

Contents of the invention

The technical problem to be solved in the present invention is a new type of elevator traction machine belt-type anti-sway vibration damping device proposed in response to the above-mentioned technical problems. The lateral stiffness and longitudinal stiffness effectively increase the lateral anti-sway performance while ensuring the vibration isolation in the vertical direction, thus improving the noise reduction performance, vibration isolation performance and anti-sway performance of the elevator as a whole.

In order to solve the above technical problems, the present invention provides a novel elevator traction machine belt-type anti-sway vibration damping device, which has an elevator traction machine, the lower end of the elevator traction machine is fixed on the base, and the lower end of the base is set Parallel I-shaped steel supports; a vibration isolation and anti-sway assembly is also arranged between the base and the I-steel support; the vibration isolation and anti-sway assembly includes telescopic columns, vibration isolation counterweights, vibration isolation steel frames, A vibration damping layer and a vibration isolation cushion, the vibration isolation damping layer is surrounded and arranged on the upper beam and the connecting beam of the I-beam support, the vibration isolation cushion is arranged on the upper end of the vibration isolation damping layer, and the vibration isolation The steel frame is fixedly arranged on the upper end of the vibration-isolation cushion, the vibration-isolation counterweight is arranged around the two ends of the vibration-isolation steel frame, and the telescopic column is arranged at the lower end of the vibration-isolation counterweight.

Specifically, the section of the vibration isolation and damping layer is in the shape of an inverted cone and is arranged on the upper beam and the connecting beam of the I-shaped steel support, which can effectively reduce the lateral swing of the traction machine during normal operation and improve the I-shaped Lateral stiffness of steel supports.

Further, in the above technical solution, the vibration isolation cushion is a channel-shaped steel plate, and the vibration isolation cushion is arranged on both sides of the vibration isolation and damping layer with its opening facing downward, so as to improve the longitudinal stiffness of the I-beam support.

Further, in the above technical solution, the vibration isolation and damping layer is mainly composed of an outer jacket, rubber and an inner jacket arranged in sequence from outside to inside. In this way, it is convenient for the operator to use different rubbers to reduce vibration and noise, and the vertical stiffness of the I-beam support can be adjusted through the cooperation and adjustment of the telescopic column.

Further, in the above technical solution, the base is fixedly connected to the vibration-isolation steel frame through fastening bolts, which can facilitate the installation, loading and unloading of the traction machine by operators.

Further, in the above technical solution, the lower end of the I-shaped steel support is provided with a crossbeam, and the bottom of the I-beam support is fixedly arranged on the crossbeam, which can provide good support for the vibration isolation and anti-sway assembly , effectively guarantee the anti-vibration and anti-sway effect of the vibration isolation and anti-sway component on the traction machine.

After adopting the above structure, the structure is simple, and the lateral stiffness and longitudinal stiffness of the support are improved by setting the vibration isolation and anti-sway assembly at the lower end of the traction machine, which effectively increases the lateral anti-vibration while ensuring the vibration isolation in the vertical direction. Sway performance, thus improving the noise reduction performance, vibration isolation performance and anti-sway performance of the elevator as a whole.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment the present invention will be described in further detail:

Fig. 1 is the front structural representation of the present invention;

Fig. 2 is the top view of Fig. 1;

Fig. 3 is a side view of Fig. 1;

Fig. 4 is a schematic diagram of an enlarged structure in Fig. 1;

Fig. 5 is a schematic diagram of the layer structure of the vibration isolation and damping layer in the present invention;

Fig. 6 is a schematic diagram of the comparison structure of the vibration isolation and damping layer in the stressed state and the unstressed state in the present invention;

Fig. 7 is a schematic diagram of the test comparison between the vibration isolation and anti-sway components and those without the vibration isolation and anti-sway components.

In the figure: 1 is the elevator traction machine, 2 is the base, 3 is the I-beam support, 4 is the telescopic column, 5 is the vibration isolation counterweight, 6 is the vibration isolation steel frame, 7 is the vibration isolation damping layer, 7 -1 is an outer jacket, 7-2 is rubber, 7-3 is an inner sleeve, 8 is a vibration-isolation cushion, 9 is a beam, and 10 is a suspension ring.

Detailed ways

As shown in Figures 1 to 7, it is a new belt type anti-sway vibration damping device for elevator traction machine, which has elevator traction machine 1, the lower end of elevator traction machine 1 is fixed on base 2, and the lower end of base 2 is set parallel The I-shaped steel support 3; the vibration isolation and anti-sway component is also arranged between the base 2 and the I-steel support 3; the vibration isolation and anti-sway component includes a telescopic column 4, a vibration isolation counterweight 5, a vibration isolation steel frame 6, The vibration-isolation damping layer 7 and the vibration-isolation cushion layer 8, the vibration-isolation damping layer 7 is surrounded and arranged on the upper beam and the connecting beam of the I-beam support 3, the vibration-isolation cushion layer 8 is arranged on the upper end of the vibration-isolation damping layer 7, The vibration steel frame 6 is fixedly arranged on the upper end of the vibration isolation cushion 8 , the vibration isolation counterweight 5 is surrounded and arranged on both ends of the vibration isolation steel frame 6 , and the telescopic column 4 is arranged at the lower end of the vibration isolation counterweight 5 .

Wherein, the section of the vibration-isolation and damping layer 7 is in an inverted cone shape, and is arranged around the upper beam and the connecting beam of the I-beam support 3 . The vibration-isolation pad 8 is a channel-shaped steel plate, and the vibration-isolation pad 8 is arranged on both sides of the vibration-isolation and damping layer 7 with its opening facing downwards. The vibration isolation and damping layer 7 is mainly composed of an outer casing 7-1, a rubber 7-2 and an inner casing 7-3 arranged sequentially from outside to inside. The base 2 is fixedly connected to the vibration-isolation steel frame 6 by fastening bolts. The lower end of the I-shaped steel support 3 is provided with a crossbeam 9 , and the bottom of the I-beam support 3 is fixedly arranged on the crossbeam 9 .

The I-shaped steel support 3 is divided into an upper beam, a connecting beam and a lower beam. The lower beam is fixedly arranged on the cross beam 9. The section of the vibration isolation and damping layer 7 is in an inverted cone shape, surrounding the upper beam and the lower beam arranged on the I-shaped steel support 3. It is connected to the beam, which can effectively prevent it from swaying in the lateral direction and improve its stabilizing effect.

As shown in Fig. 1 and Fig. 3, a suspension ring 10 is also provided on the base 2, which can facilitate the lifting of the traction machine by the operator.

As shown in Figure 5, the rubber 7-2 in the vibration isolation and damping layer 7 can be composed of multiple layers of materials. The specific situation can be designed according to the actual vibration reduction effect, and the elastic vibration isolation can be effectively adjusted by cooperating with the telescopic column 4. Height, adopting the elevator traction machine belt type anti-sway vibration damping device designed by the present invention can effectively adjust the vertical stiffness, improve its longitudinal stiffness and transverse stiffness, and ensure the isolation of vertical vibration and the horizontal anti-sway performance.

As shown in Figure 6, it is a schematic diagram of the comparative structure of the vibration isolation and damping layer 7 in the unstressed and stressed states. The vibration isolation and damping layer 7 on the left in Figure 6 is a display state that is not subjected to the action of the force F under normal conditions. Figure 6 The one on the right in 6 is the display state after the vibration isolation and damping layer 7 is subjected to the force F in the vertical direction.

According to the formula, the following main performance parameters are calculated for the axial stiffness, radial stiffness, torsional stiffness and rollover stiffness of the vibration isolation and damping layer 7:

G＝0.086×1.045 ^HS ····································································· ·································(5)

In the formula: K _Z — axial stiffness of the rubber bushing, N/mm;

K _R - radial stiffness of the rubber bushing, N/mm;

K _T — torsional rigidity of the rubber bushing, N mm/deg;

K _V —turning stiffness of the rubber bushing, N mm/deg;

G—rubber shear modulus of elasticity (HS is rubber Shore hardness), MPa;

k—shape factor;

D—the inner diameter of the metal jacket of the rubber bushing, mm;

d—the outer diameter of the metal inner sleeve of the rubber bushing, mm;

h—height of rubber bushing rubber, mm.

After calculation, it is found that after adopting the anti-sway vibration damping device designed by the invention, the longitudinal stiffness and transverse stiffness are more than 20 times higher than the vertical stiffness, ensuring vertical vibration isolation and transverse anti-sway.

For this reason, the applicant conducted the same comparative experiment before and after vibration isolation, and obtained the experimental data as shown in FIG. 7 . It can be seen from the data in the late frame of Figure 7 that the vibration acceleration of the foundation after vibration isolation has been significantly reduced, effectively achieving the effect of vibration isolation and vibration reduction.

Although the specific embodiments of the present invention have been described above, those skilled in the art should understand that these are only examples, and various changes or modifications can be made to the embodiments without departing from the principle and essence of the present invention. The scope of protection is limited only by the appended claims.

Claims (6)

1. A novel elevator traction machine belt-type anti-sway vibration damping device has an elevator traction machine (1), the lower end of the elevator traction machine (1) is fixed on the base (2), and the base (2 ) is provided with a parallel I-shaped steel support (3); it is characterized in that: a vibration isolation and anti-sway component is also arranged between the base (2) and the I-steel support (3); the vibration isolation and anti-sway The assembly includes a telescopic column (4), a vibration-isolation counterweight (5), a vibration-isolation steel frame (6), a vibration-isolation damping layer (7) and a vibration-isolation pad (8), and the vibration-isolation damping layer (7) Surrounded on the upper beam and connecting beam of the I-beam support (3), the vibration isolation pad (8) is arranged on the upper end of the vibration isolation damping layer (7), and the vibration isolation steel frame (6) is fixed It is arranged on the upper end of the vibration-isolation cushion (8), the vibration-isolation counterweight (5) is surrounded and arranged on both ends of the vibration-isolation steel frame (6), and the telescopic column (4) is arranged on the vibration-isolation counterweight ( 5) the lower end. 2. A new type of elevator traction machine belt-type anti-sway vibration damping device according to claim 1, characterized in that: the section of the vibration isolation and damping layer (7) is in an inverted cone shape, surrounded by I-shaped steel supports On the upper beam and connecting beam of piece (3). 3. A novel elevator traction machine belt-type anti-sway vibration damping device according to claim 1, characterized in that: the vibration-isolation pad (8) is a channel-shaped steel plate, and the vibration-isolation pad (8) ) is surrounded and arranged on both sides of the vibration isolation and damping layer (7) facing downwards. 4. A novel elevator traction machine belt-type anti-sway vibration damping device according to claim 1, characterized in that: the vibration isolation and damping layer (7) is mainly an outer casing (7-1) arranged sequentially from outside to inside ), rubber (7-2) and inner sleeve (7-3). 5. A new belt-type anti-sway vibration damping device for an elevator traction machine according to claim 1, characterized in that: the base (2) is fixedly connected to the vibration-isolation steel frame (6) by fastening bolts. 6. A novel elevator traction machine belt-type anti-sway vibration damping device according to claim 1, characterized in that: the lower end of the I-shaped steel support (3) is provided with a beam (9), and the I-shaped The bottom of the steel support (3) is fixedly arranged on the beam (9).