CN106051032B - A kind of powered shock absorption device for hoisting process - Google Patents

Abstract

The invention discloses a dynamic vibration absorbing device used in the hoisting process, which includes a shell and a connecting device arranged on the outer periphery of the shell. A mass block and a supporting structure are arranged inside the shell, and the mass block is slidably supported on the supporting structure. The outer periphery of the block is connected with multiple damping vibration-absorbing pairs, the damping vibration-absorbing pair includes a hydraulic damper and an air spring arranged side by side, one end of the hydraulic damper is hinged to the outer wall of the mass block and the other end is hinged to the inner wall of the housing, and the The axes are all perpendicular to the support surface of the support structure, one end of the air spring is connected to the outer wall of the mass block and the other end is connected to the inner wall of the housing, and a hydraulic damping adjustment device and an air spring adjustment device are also included. The hinged connection between the hydraulic damper and the mass block and the shell can ensure the free movement of the mass block on the support structure, so as to achieve a multi-directional vibration absorption effect in a plane; the damping coefficient and elastic coefficient can be adjusted to ensure that the device can be widely used in Different wind loads and different segments.

Description

A dynamic vibration absorbing device used in hoisting process

technical field

The invention relates to the technical field of hoisting technology for marine engineering equipment, in particular to a dynamic vibration absorbing device used in the hoisting process.

Background technique

During the construction process of large-scale equipment used in marine engineering, such as large ships and drilling platforms, it is necessary to frequently use large cranes to hoist sections for assembly or place welding. The improvement of hoisting work efficiency not only determines the efficiency of the entire construction process, but also reduces costs and improves resource utilization. However, the improvement of hoisting efficiency is often restricted in two situations: one is that in windy weather, the section is vibrated by the wind load and has to reduce the speed of hoisting movement, which even leads to the failure of construction; Adjust the position to meet the segment position accuracy, which is difficult due to the vibration of the segment due to wind load. One of the ways to solve these problems is to use a vibration damping device to absorb the vibration of the segments, so that the hoisting process is more stable and efficient.

Existing hoisting vibration damping devices generally work with suspenders or steel wires, and play a role of buffering and damping at the connecting end, and have limited vibration absorption for large mass segments that are directly excited by wind loads and vibrate, especially for vibrations in the horizontal direction Failed to be effectively absorbed. At the same time, the existing hoisting vibration damping device has poor adjustability, and cannot effectively damp vibrations in different vibration situations of different hoisting sections.

Therefore, how to effectively absorb the segmental vibration during the hoisting process and improve the applicability of the vibration absorbing device is a technical problem that those skilled in the art need to solve.

Contents of the invention

In view of this, the purpose of the present invention is to provide a dynamic vibration absorbing device used in the hoisting process. The dynamic vibration absorbing device can not only effectively absorb the vibration of the hoisting segments, improve the hoisting efficiency, but also has good adjustability and high applicability.

In order to achieve the above object, the present invention provides the following technical solutions:

A dynamic vibration-absorbing device used in the hoisting process, comprising a shell and a connecting device arranged on the outer periphery of the shell for connecting and fixing the segments, a mass block and a supporting structure are arranged inside the shell, and the mass The block is slidably supported on the supporting surface of the support structure, and the outer periphery of the mass block is connected with a plurality of damping and shock-absorbing pairs, each of which includes a hydraulic damper and an air spring arranged side by side, and the hydraulic One end of the damper is hinged to the outer wall of the mass block and the other end is hinged to the inner wall of the housing. The axes of the hinges at both ends of the hydraulic damper are perpendicular to the supporting surface of the support structure. One end of the air spring It is connected to the outer wall of the mass block and the other end is connected to the inner wall of the housing, the hydraulic damper is connected with a hydraulic damping adjustment device, and the air spring is connected with an air spring adjustment device.

Preferably, in the above-mentioned dynamic vibration absorbing device, the housing is provided with the support structure on both upper and lower sides of the mass block.

Preferably, in the above-mentioned dynamic vibration absorbing device, the support structure includes a plurality of ball bearings disposed inside the housing and in rolling contact with the surface of the mass block.

Preferably, in the above-mentioned dynamic vibration absorbing device, the plurality of ball bearings are distributed in a circular shape.

Preferably, in the above-mentioned dynamic vibration-absorbing device, the number of the damping vibration-absorbing pairs is greater than or equal to three, and the multiple damping vibration-absorbing pairs are evenly arranged in the circumferential direction of the mass block.

Preferably, in the above-mentioned dynamic vibration-absorbing device, the cross-section of the mass block is square, and each of the four side walls of the mass block is connected with one damping vibration-absorbing pair.

Preferably, in the above-mentioned dynamic vibration absorbing device, the housing is a circular box structure, the mass block is arranged at the center of the housing, and each of the damping vibration absorbing pairs along the diameter of the housing To layout.

Preferably, in the above-mentioned dynamic vibration absorbing device, an electromagnet is provided inside the connection device, and an electromagnetic control device for controlling the power on and off of the electromagnet is connected to the connection device.

Preferably, in the above-mentioned dynamic vibration absorbing device, a plurality of connecting devices are provided on the outer periphery of the housing.

Preferably, in the above-mentioned dynamic vibration absorbing device, four connecting devices are uniformly arranged on the outer periphery of the housing.

The dynamic vibration absorbing device used in the hoisting process provided by the present invention includes a casing and a connecting device arranged on the outer periphery of the casing for connecting and fixing the segments. A mass block and a supporting structure are arranged inside the casing, and the mass block is slidable. Supported on the support surface of the supporting structure, the outer periphery of the mass block is connected with multiple damping vibration-absorbing pairs, each damping vibration-absorbing pair includes a hydraulic damper and an air spring arranged side by side, one end of the hydraulic damper is hinged on the outer wall of the mass block and the other end Hinged to the inner wall of the shell, the axes of the hinges at both ends of the hydraulic damper are perpendicular to the support surface of the support structure, one end of the air spring is connected to the outer wall of the mass block and the other end is connected to the inner wall of the shell, and the hydraulic damper is connected to a hydraulic damper The adjustment device, the air spring is connected with the air spring adjustment device.

Before hoisting, the dynamic vibration absorbing device is placed on the segment, and its placement direction ensures that the direction of the two relative hydraulic dampers is the same as the direction of the maximum wind load, and the shell is fixed on the segment by using the connecting device. Lift the segment, monitor the vibration of the segment, adjust the damping coefficient of the hydraulic damper by controlling the hydraulic damping adjustment device, and adjust the elastic coefficient of the air spring by controlling the air spring adjustment device. Through dynamic adjustment, the vibration of the hoisting section is greatly reduced, and finally the adjustment of the hydraulic damper and air spring is stopped to achieve the vibration reduction effect so as to perform stable hoisting and hoisting position adjustment. After the hoisting is completed, the connecting device is loosened to separate the dynamic vibration absorbing device from the section.

The hinged connection of the hydraulic damper, the mass block and the housing in the present invention can ensure the free movement of the mass block on the support structure, thereby realizing the multi-directional vibration absorption effect in one plane; the damping coefficient of the hydraulic damper and the elastic coefficient of the air spring All can be adjusted to ensure the wide applicability of the dynamic vibration absorbing device, that is, it can be applied to different wind loads and different hoisting segments.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a schematic diagram of the overall structure of a dynamic vibration absorbing device in a specific embodiment of the present invention;

Fig. 2 is a front view of a dynamic vibration absorbing device in a specific embodiment of the present invention.

In Figure 1 and Figure 2:

1-shell, 2-mass block, 3-damping vibration-absorbing pair, 4-hydraulic damper, 5-air spring, 6-connection device, 7-electromagnetic control device, 8-air spring adjustment device, 9-hydraulic damping adjustment Device, 10-hinge, 11-support structure.

Detailed ways

The core of the present invention is to provide a dynamic vibration absorbing device used in the hoisting process. The dynamic vibration absorbing device can not only effectively absorb the vibration of hoisted sections, improve hoisting efficiency, but also has good adjustability and high applicability.

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to Figure 1 and Figure 2, Figure 1 is a schematic diagram of the overall structure of the dynamic vibration absorbing device in a specific embodiment of the present invention, and Figure 2 is a front view of the dynamic vibration absorbing device in a specific embodiment of the present invention.

In a specific embodiment, the present invention provides a dynamic shock absorbing device used in the hoisting process, the dynamic shock absorbing device includes a shell 1 and a connecting device arranged on the outer periphery of the shell 1 for connecting and fixing the segments 6. The housing 1 is provided with a mass block 2 and a support structure 11. The mass block 2 is slidably supported on the support surface of the support structure 11. A plurality of damping vibration-absorbing pairs 3 are connected to the outer periphery of the mass block 2. Each damping vibration-absorbing Pair 3 includes a hydraulic damper 4 and an air spring 5 arranged side by side. One end of the hydraulic damper 4 is hinged to the outer wall of the mass block 2 and the other end is hinged to the inner wall of the housing 1. The axes of the hinges 10 at both ends of the hydraulic damper 4 are vertical. On the support surface of the support structure 11, one end of the air spring 5 is connected to the outer wall of the mass block 2 and the other end is connected to the inner wall of the housing 1, the hydraulic damper 4 is connected to a hydraulic damping adjustment device 9, and the air spring 5 is connected to an air spring adjustment device. device 8.

It should be noted that the housing 1 serves as the supporting shell of the entire dynamic vibration absorbing device, the inside of which is a damping and vibration absorbing device, and the outside of which is a connecting device 6 . In order to further improve the applicability of the dynamic vibration absorbing device, preferably, the housing 1 of this solution is provided with supporting structures 11 on both the upper and lower sides of the mass block 2 . As shown in Figure 2, the support structure 11 is designed to be distributed symmetrically up and down, so that the shell 1 has no distinction between the front and back sides, so that the entire dynamic vibration absorbing device can be placed on the segment or suspended below the segment . It should be noted that, in use, the casing 1 is arranged horizontally, that is, the supporting surface of the supporting structure 11 is a horizontal plane, and the mass block 2 can slide freely in the horizontal plane. Of course, it is also possible to form a certain angle between the supporting surface of the supporting structure 11 and the horizontal plane.

It should be noted that the function of the support structure 11 is to provide a support base for the mass block 2. In order to allow the mass block 2 to slide more freely on the support surface of the support structure 11, preferably, the support structure 11 in this solution includes a set A plurality of ball bearings inside the shell 1 and in rolling contact with the surface of the mass block 2, these ball bearings form a supporting surface for supporting the mass block 2, and while supporting the mass block 2 inside the shell 1, the mass block 2 can Sliding relative to the supporting structure with little frictional resistance. More preferably, the plurality of ball bearings are distributed in a circular shape. As shown in FIG. 2 , the support structure 11 is located at the center of the housing 1 and distributed symmetrically up and down. The support structure 11 specifically includes a plurality of circularly distributed ball bearings uniformly fixed on the upper and lower inner walls of the housing 1 , and the size of the distribution area of these ball bearings is determined based on the principle of being able to support the mass block 2 in a working state.

It should be noted that the damping vibration-absorbing pair 3 serves as a separate vibration-absorbing unit, which can be used to absorb the vibration of the segment along the extension direction of the damping vibration-absorbing pair 3. Therefore, the more vibration-absorbing pairs 3 are arranged in more directions, It can absorb vibrations in more directions. In order to facilitate the absorption of segmented vibrations in more directions, preferably, the number of damping vibration-absorbing pairs 3 in this solution needs to be greater than or equal to three, further, these damping vibration-absorbing pairs 3 are evenly arranged in the circumferential direction of the mass block 2, It can achieve more uniform vibration absorption for the segments.

It should be noted that damping and vibration-absorbing pairs 3 are connected around the mass block 2 , and the mass block 2 is placed in the central area of the casing 1 through the support structure 11 . The shape of the cross-section of the mass block 2 can be triangular, rectangular, square, hexagonal, octagonal or other irregular shapes, preferably, the mass block 2 in this solution is a square, as shown in Figure 1, the damping vibration-absorbing pair 3 The number is four, that is, the four side walls of the mass block 2 are connected with hydraulic dampers 4 and air springs 5 .

Preferably, the housing 1 in this solution is designed as a circular box structure, the mass block 2 is arranged at the center of the housing 1 , and each damping and vibration-absorbing pair 3 is arranged along the radial direction of the housing 1 . In this way, when installing the dynamic shock absorbing device, the extension direction of the two hydraulic dampers 4 (for example, the two hydraulic dampers 4 opposite to the left and right sides of the mass block 2 in Fig. 1 ) and the maximum wind If the loading directions are the same, the mass block 2 can be moved directly along the extension direction of the damping vibration-absorbing pair 3, thereby reducing torsional motion and improving the vibration-absorbing effect.

The two ends of the hydraulic damper 4 are respectively hinged with the mass block 2 and the housing 1 through hinges 10 , so the swing is allowed, and the damping coefficient of the hydraulic damper 4 can be changed by changing the hydraulic pressure. The hydraulic dampers 4 are all connected to the hydraulic damping adjustment device 9, the hydraulic damping adjustment device 9 provides pressure for the hydraulic dampers 4, and the damping coefficient can be adjusted by adjusting the pressure.

The air spring 5 and the hydraulic damper 4 are distributed side by side, and the two ends of the air spring 5 are connected to the mass block 2 and the housing 1 respectively, and the elastic coefficient can be adjusted by adjusting the air pressure. The air springs 5 are all connected to the air spring adjusting device 8, the air spring adjusting device 8 provides air pressure for the air spring 5, and the elastic coefficient of the air spring 5 can be adjusted by adjusting the air pressure.

It should be noted that the function of the connecting device 6 is to fix the whole dynamic vibration absorbing device on the segmented surface of the hoisting, which can be connected and fixed by various fixing methods, such as bolt fixing, magnet adsorption fixing, buckle fixing, etc., preferably Specifically, there is an electromagnet inside the connecting device 6 in this solution, and when the electromagnet is energized, the housing 1 can be stably fixed on the segment through the connecting device. Further, the connection device 6 is connected with an electromagnetic control device 7 for controlling the power on and off of the electromagnet, and the electromagnetic control device 7 controls the power on and off of the electromagnet of the connection device 6, and then controls the connection and connection between the entire dynamic vibration absorbing device and the segments. Separation improves the convenience of operation and has a high degree of automation.

In order to further ensure the stable connection between the housing 1 and the segments, preferably, in this solution, a plurality of connection devices 6 are arranged on the outer periphery of the housing 1. A connection device 6, as shown in Figure 1.

The use process of the dynamic vibration absorbing device provided by the present invention is as follows:

Before hoisting, place the dynamic vibration-absorbing device on the upper surface of the segment, or on the lower surface of the segment, or place it in pairs on the upper and lower surfaces of the segment. The placement direction of each dynamic vibration-absorbing device ensures that two hydraulic dampers arranged oppositely The direction is the same as the direction of maximum wind load. The electromagnetic control device 7 is controlled to energize the electromagnet of the connecting device 6, so that the dynamic vibration absorbing device is firmly connected to the segment. Lift the segment and monitor the vibration of the segment. The hydraulic damping adjusting device 9 is controlled to adjust the damping coefficient of the hydraulic damper 4 , and at the same time, the air spring adjusting device 8 is controlled to adjust the elastic coefficient of the air spring 5 . The vibration of the hoisting section is greatly reduced through dynamic adjustment, and finally the adjustment of the hydraulic damper 4 and the air spring 5 is stopped to achieve a vibration reduction effect, thereby performing stable hoisting and hoisting position adjustment. After the hoisting is completed, the electromagnetic control device 7 is controlled to control the electromagnet of the connecting device 6 to be powered off, so that the dynamic vibration absorbing device is separated from the section.

It can be seen that the distribution characteristics of the four hydraulic dampers 4 of the present invention and the hinge connection mode between the hydraulic dampers 4 and the mass block 2 and the housing 1 can ensure the free movement of the mass block 2 in one plane, thereby realizing multiple hydraulic dampers in one plane. direction of vibration absorption; the damping coefficient of the hydraulic damper 4 and the adjustability of the elastic coefficient of the air spring 5 ensure the wide applicability of the dynamic vibration absorbing device, that is, it can be applied to situations such as different wind loads and different hoisting segments.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1. a kind of powered shock absorption device for hoisting process, which is characterized in that including housing (1) and be arranged at the housing (1) periphery be used for connect fixed attachment device (6) with segmentation, the housing (1) is internally provided with mass block (2) and support Structure (11), the mass block (2) are slidably supported on the supporting surface of the support construction (11), the mass block (2) Periphery be connected with multiple damping shock absorptions to (3), the hydraulic damper that each damping shock absorption includes being arranged side by side to (3) (4) and air spring (5), one end of the hydraulic damper (4) is articulated with the mass block (2) outer wall and the other end is articulated with The inner wall of the housing (1), the axis of the hinge (10) at hydraulic damper (4) both ends are each perpendicular to the support construction (11) supporting surface, one end of the air spring (5) is connected to the mass block (2) outer wall and the other end is connected to the shell The inner wall of body (1), the hydraulic damper (4) are connected with hydraulic damping regulating device (9), and the air spring (5) is connected with Air spring regulating device (8), the attachment device (6) is internally provided with electromagnet, and the attachment device (6) connection is useful In the electromagnetic control apparatus (7) for controlling the magnet switching electricity.

2. powered shock absorption device according to claim 1, which is characterized in that the housing (1) is in the mass block (2) Upper and lower two sides are arranged with the support construction (11).

3. powered shock absorption device according to claim 2, which is characterized in that the support construction (11) includes being arranged at institute State multiple ball bearings that housing (1) is internal and is contacted with the mass block (2) surface scrolls.

4. powered shock absorption device according to claim 3, which is characterized in that multiple ball bearings are in circular ring shape point Cloth.

5. powered shock absorption device according to claim 1, which is characterized in that the damping shock absorption is more than the quantity of (3) Equal to three, and multiple damping shock absorptions are evenly arranged in (3) circumferential direction of the mass block (2).

6. powered shock absorption device according to claim 5, which is characterized in that the section of the mass block (2) is square, Four side walls of the mass block (2) be all connected with there are one the damping shock absorption to (3).

7. powered shock absorption device according to claim 6, which is characterized in that the housing (1) be round box structure, institute State the center that mass block (2) is arranged in the housing (1), and each damping shock absorption to (3) along the housing (1) Radial arrangement.

8. powered shock absorption device according to claim 1, which is characterized in that the periphery of the housing (1) is provided with multiple The attachment device (6).

9. powered shock absorption device according to claim 8, which is characterized in that the periphery of the housing (1) is equably set There are four the attachment devices (6).