CN216235479U - Guide rail vibration damper with vibration absorption module - Google Patents

Abstract

The utility model provides a guide rail vibration damping device with a vibration absorption module, which comprises: the device comprises a guide rail, a mounting part, an elastic arm and a vibration absorption module, wherein the elastic arm is fixed on the mounting part; two ends of the elastic arm are respectively fixedly connected with the vibration absorption module; the vibration absorption module at least has a natural vibration mode, and the natural vibration mode refers to a mode of vibration of the weight along all directions of the guide rail. The utility model has simple manufacture and convenient field installation, and can effectively inhibit the vibration of the guide rail under the condition of not changing the original structure of the elevator guide rail.

Description

Guide rail vibration damper with vibration absorption module

Technical Field

The utility model relates to an elevator device, in particular to a guide rail vibration damping device with a vibration absorption module.

Background

When the elevator car runs in the hoistway, vibration of the guide rail can be caused, the vibration is transmitted to the wall body of the hoistway through the guide rail bracket, and noise in the living room is caused through transmission of the building structure.

Typically, the guide rail brackets are rigidly connected to the hoistway wall. In order to reduce the vibration of the wall of the hoistway, a common method is to add an elastic vibration isolation member between the guide rail bracket and the wall, so that the propagation of the vibration is effectively attenuated, and the noise of the elevator in the room is reduced. In order to obtain a good vibration isolation effect, the lower the rigidity of the elastic vibration isolation member is, the better the rigidity is, but due to the use of the elastic member, the installation rigidity of the guide rail becomes worse, and the guide rail is more likely to deform, and the deformation of the guide rail affects the riding comfort of the elevator and may even adversely affect the safety of the elevator.

Patent document C203346739U discloses a vibration absorber for a rail, which includes an elastic element, a mass block, and a coupling frame, wherein the shape of the coupling portion between the coupling frame and the non-working surface of the rail is the same as the shape of the corresponding surface of the rail, the coupling frame includes a vibration absorbing cavity, the mass block is disposed in the coupling frame, and the elastic element is disposed between the mass block and the wall of the vibration absorbing cavity. However, the surface shape of the coupling frame and the non-working surface coupling portion of the rail in this vibration absorber must be the same as the surface shape of the corresponding rail surface, otherwise the vibration absorbing effect is not achieved, and the manufacturing process becomes extremely complicated.

Effects of the utility model

The utility model aims to solve the technical problem of providing a guide rail vibration damping device which is simple to manufacture and convenient to install on site, can effectively restrain the vibration of a guide rail under the condition of not changing the original structure of an elevator guide rail, and accordingly reduces the wall vibration of a hoistway and the noise of a living room.

In order to solve the technical problem, the utility model discloses a guide rail vibration damping device with a vibration absorption module, which comprises: the device comprises a guide rail, a mounting part, an elastic arm and a vibration absorption module, wherein the elastic arm is fixed on the mounting part; two ends of the elastic arm are respectively fixedly connected with the vibration absorption module; the vibration absorption module at least has a natural vibration mode, and the natural vibration mode refers to a mode of vibration of the weight along all directions of the guide rail.

Preferably, the vibration absorbing module is a weight.

Preferably, the vibration absorbing module includes: the vibration absorption box is of a closed structure with a cavity inside, and the energy consumption unit is arranged in the cavity.

Preferably, the vibration absorption module vibrates in a moving direction of the guide rail in a mode of at least one of the following six: the weight block performs translational vibration along the X-axis, Y-axis or Z-axis direction of the guide rail; the weight block rotationally vibrates along the X-axis direction, the Y-axis direction or the Z-axis direction of the guide rail.

Preferably, the elastic arm is in a strip-shaped structure, and the cross section of the elastic arm is circular or rectangular.

Preferably, the elastic arm is made of a non-metal material.

Preferably, the weight is made of a metal material.

Preferably, the energy consuming units consist of metal balls, sand or plastic particles.

Preferably, 2 guide rail vibration dampers are arranged between every two guide rail brackets, and are respectively arranged at 1/4 position, 1/2 position or 3/4 position of the vertical distance between the two guide rail brackets.

Drawings

Fig. 1 is a schematic view of a setup scenario of the present invention.

Fig. 2 is a schematic view showing three vibration modes of a guide rail in an elevator operation according to embodiment 1 of the guide rail vibration damping apparatus with a vibration absorbing module of the present invention.

Fig. 3 is a schematic view of vibration modes of embodiment 1 of the guide rail vibration damping device with a vibration absorption module according to the present invention.

Fig. 4 is a schematic structural view of the guide rail damping device with a vibration absorbing module of embodiment 1 of the present invention mounted on a guide rail.

Fig. 5 is an isometric view of embodiment 1 of the guide rail vibration damping device with a vibration absorbing module of the present invention.

Fig. 6 is a schematic view of the embodiment 1 of the guide rail damping device with a vibration absorbing module according to the present invention.

Fig. 7 is a schematic view of embodiment 2 of the guide rail vibration damping device with a vibration absorbing module according to the present invention.

Wherein the reference numerals are as follows:

1 cage 2 guide rails

3 guide shoe 4 guide rail bracket

5 well 6 well wall

Guide rail vibration damper with 10 vibration absorption modules

101 mounting part

102 resilient arm 103 weight

104 vibration absorption box 105 energy consumption unit

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

The guide rail vibration damping device 10 with the vibration absorption module is arranged on a guide rail 2 of an elevator, and the elevator comprises a car 1, the guide rail 2, a guide shoe 3 and a guide rail bracket 4. The guide rails 2 are fixed to a hoistway wall around a hoistway 5 by guide rail brackets 4, and the car 1 travels up and down in the hoistway 5 along the elevator guide rails 2 by guide shoes 3, as shown in fig. 1, and components such as a counterweight and a wire rope of the elevator are not shown in the figure. The interaction between the guide shoe 3 and the guide rail 2 during operation of the elevator causes vibrations of the guide rail 2 and the shaft wall 6, which causes noise problems, especially low frequency noise in the range of 500 Hz.

The rail damper 10 includes a mounting portion 101, an elastic arm 102, and a vibration absorbing weight 103. The elastic arm 102 is fixed to the mounting portion 101 at the middle portion thereof, and has two free ends, the two free ends are respectively fixed to the vibration-absorbing weights 103 (i.e., the vibration-absorbing modules), and the two sides thereof are respectively formed with spring vibrator structures having at least one natural vibration mode and frequency, as shown in fig. 4 to 6.

Preferably, the flexible arm 102 has an elongated configuration with a circular or rectangular cross-sectional shape.

Preferably, the elastic arm 102 is made of non-metal material such as polyurethane.

Preferably, the weight 103 is made of a metal material such as steel.

Preferably, the different natural frequencies are achieved by varying the length of the resilient arm 102.

Preferably, the different natural frequencies are realized by varying the weight of the vibration absorbing weight 103.

Preferably, the guide rail vibration damper 10 has X, Y, Z direction three translational vibration modes and X, Y, Z surround three rotational vibration modes, i.e. the vibration absorbing weight 103 has 6 degrees of freedom of movement. According to the vibration characteristics of the guide rail, 1-2 vibration modes are selected to reduce the vibration of the guide rail.

Preferably, at least one natural frequency and vibration mode of the guide rail 2 are estimated in advance based on the size and specification of the guide rail 3 and the distance between the two rail brackets 4, and three typical vibration modes of the guide rail are shown in fig. 2. The natural frequency of the guide rail vibration damping device 10 may be preferentially set to be equal to the natural frequency of the guide rail 2, so that the vibration of the guide rail 2 can be suppressed to the maximum.

As shown in fig. 3, the solid line is the guide rail vibration spectrum when the guide rail vibration damping device 10 is not provided, and there is a sharp peak at the natural frequency of the guide rail. The dotted line is the vibration spectrum of the guide rail when the guide rail vibration damping device 10 is arranged at the positions of 0.625m and 1.875m, and because the weight and the elastic body can effectively absorb and consume the vibration of the guide rail, the amplitude of the vibration mode B of the guide rail is effectively inhibited, and the 150Hz vibration of the guide rail is reduced by about 8dB, so that the vibration amplitude of the well wall is also reduced, and the noise of the elevator in the room is reduced.

Preferably, the natural frequency of the guide rail vibration damping device 10 coincides with the natural frequency of one of the modes A, B, C of vibration of the elevator guide rail. When the distance between the two guide rail mounts is L, the guide rail vibration damper 10 is preferably arranged at a distance of L/4, L/2 or 3L/4 from one guide rail mount. In the vibration mode of the guide rail vibration damping device 10, the direction of vibration of the weight coincides with the main direction of vibration of the guide rail.

Preferably, the guide rail vibration dampers 10 are preferably arranged at a distance L/2 from the guide rail bracket, the natural frequency coincides with the frequency of the vibration mode a of the elevator guide rail, and the vibration energy of the vibration mode a of the guide rail can be preferentially consumed.

Preferably, the guide rail vibration dampers 10 are preferably arranged at a distance L/2 from the guide rail bracket, the natural frequency coincides with the frequency of the vibration mode C of the elevator guide rail, and the vibration energy of the guide rail vibration mode C can be preferentially consumed.

Preferably, the guide rail vibration dampers 10 are preferably arranged at a distance of L/4, 3L/4 from one guide rail bracket, the natural frequency coincides with the frequency of the vibration mode B of the elevator guide rail, and the vibration energy of the guide rail vibration mode C can be preferentially dissipated.

Preferably, the guide rail vibration damper 10 is fixed on the back side of the guide rail through a bolt 8 and a guide rail pressing block 9, so that the up-and-down position of the guide rail vibration damper can be conveniently adjusted.

The guide rail damping device 10 is pre-adjusted and packaged in a factory, and is fixed with the guide rail only through bolts during field construction, so that the installation is very convenient, and the cost can be easily controlled. Because its elastomer and the body of shaking all encapsulate inside the casing, the damping performance is difficult to receive external disturbance and destroys, and does not have the risk that the body of shaking drops.

Preferably, the guide rail vibration damper 10 is arranged in the region between the two guide rail brackets 4. When the distance between the two guide rail brackets is L, the vertical distance between the guide rail vibration damping device 10 and one of the guide rail brackets is preferably set to 0.5L, and the natural frequency of the guide rail vibration damping device 10 is equal to the natural frequency of the guide rail vibration mode a. The advantage of this arrangement is that the vibration damping device can consume the energy of the vibration mode A of the guide rail 2 to the maximum extent at the position where the amplitude of the vibration mode A of the guide rail is maximum, and the purpose of vibration damping is achieved. The natural frequency of the guide rail vibration damping device 10 may also be set equal to the natural frequency of the guide rail vibration mode C, which has the advantage that the guide rail vibration damping device 10 can dissipate the energy of the guide rail 2 vibration mode C when the guide rail vibrates in the form and frequency of the vibration mode C.

Preferably, the guide rail vibration damping device 10 has at least 2 typical vibration modes, a first vibration mode for damping one of the guide rail vibration modes A, B, C and a second vibration mode for damping another one of the guide rail vibration modes A, B, C. The guide rail vibration damping device 10 can simultaneously damp 2 vibration modes of the guide rail.

Example 2

As shown in fig. 7, the guide rail damping device 10 with a vibration absorbing module is different from embodiment 1 in that it includes a mounting portion 101, an elastic arm 102, a vibration absorbing case 104, and an energy consuming unit 105. The vibration absorbing modules are a vibration absorbing box 104 and an energy consuming unit 105. The vibration absorption box 104 is a closed structure, a cavity is arranged inside the vibration absorption box, and an energy consumption unit is arranged in the cavity and consists of metal balls, sand or plastic particles. The guide rail vibration damping device 10 has at least one natural vibration mode and frequency. This is advantageous in that when the guide rail vibrates, the vibration of the guide rail can be absorbed and consumed by the guide rail vibration absorption device, and since the energy dissipation units are granular, the grains generate heat by friction with each other, and the energy of the vibration can be dissipated more effectively, thereby suppressing the vibration of the guide rail.

The optimum mounting position of the guide rail vibration damping device 10 can be set as described in embodiments 1 and 2, thereby suppressing the vibration of the guide rail to the maximum extent.

It is readily conceivable that the elevator guide rail may also have other different vibration modes, and a new embodiment can be created by making appropriate structural changes to the guide rail vibration damping device of the above embodiment. The guide rail damping device may also have other vibration modes for damping the guide rail. The installation position and number of the guide rail vibration dampers may be appropriately adjusted, or the features of the above embodiments may be recombined to form a new embodiment.

Claims (9)

1. The utility model provides a guide rail vibration damper of module is inhaled in area which characterized in that includes: a guide rail, a mounting part, an elastic arm and a vibration absorbing module, wherein,

the elastic arm is fixed on the mounting part; two ends of the elastic arm are respectively fixedly connected with the vibration absorption module;

the vibration absorption module at least has a natural vibration mode, and the natural vibration mode refers to a mode of vibration of the weight along all directions of the guide rail.

2. The rail damping apparatus with vibration absorbing modules of claim 1 wherein said vibration absorbing modules are weights.

3. The rail vibration damping device with a vibration-absorbing module of claim 1 wherein said vibration-absorbing module comprises: a vibration absorption box and an energy consumption unit, wherein,

the vibration absorption box is of a closed structure with a cavity inside, and the energy consumption unit is arranged in the cavity.

4. The rail vibration damping device with a vibration-absorbing module according to claim 1, wherein the vibration-absorbing module vibrates in at least one of the following six modes in the moving direction of the rail:

the weight block performs translational vibration along the X-axis, Y-axis or Z-axis direction of the guide rail;

the weight block rotationally vibrates along the X-axis direction, the Y-axis direction or the Z-axis direction of the guide rail.

5. The vibration damping apparatus for a guide rail having a vibration-absorbing module according to claim 1, wherein the elastic arm has a strip-shaped configuration and a cross-sectional shape of a circle or a rectangle.

6. The vibration damping apparatus for a guide rail having a vibration absorbing module according to claim 1, wherein said elastic arm is made of a non-metallic material.

7. The vibration damping apparatus for a guide rail having a vibration absorbing module according to claim 2, wherein said weight is made of a metal material.

8. The vibration damping device for a guide rail with vibration absorbing modules of claim 3 wherein the dissipative element consists of metal balls, sand or plastic particles.

9. The rail damping device with a shock-absorbing module of claim 1, wherein 2 rail damping devices are provided between each two rail brackets, respectively at the position 1/4, 1/2 or 3/4 of the vertical distance between the two rail brackets.

Images