Self-adaptive compensation damping mechanism for pipeline installation

Abstract

The invention provides a self-adaptive compensation damping mechanism for pipeline installation. An installation fixing disc in the mechanism is provided with an annular base part; at least three elastic vibration reduction assemblies are evenly distributed in the circumferential direction of the annular base part. The elastic vibration reduction assembly comprises a clamping block, a vibration reduction spring, a guide column, an anti-disengaging block and a spherical rotating shaft. The spherical rotating shaft is embedded into the annular base part; one end of the guide post is fixedly connected with the anti-falling block, and the other end of the guide post penetrates through the spherical rotating shaft, extends into the ring of the annular base part, firstly penetrates through the damper spring and is embedded into the clamping block through a ball head at the front end of the guide post; the mounting pipeline is assembled between the clamping blocks; the angle between the guide column and the mounting pipeline is adapted through rotation of the ball head at the front end of the guide column in the clamping block and rotation of the spherical rotating shaft; and the guide column linearly moves in the spherical rotating shaft so as to adapt to the distance between the mounting pipeline and the annular base part. Free and rapid installation, vibration reduction and buffering of the pipeline can be achieved.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline adaptive installation vibration reduction in engineering machinery, and in particular to a pipeline installation adaptive compensation vibration reduction mechanism. Background Art

[0002] Construction machinery involves a large number of pipeline connections and installations. Some pipelines are connected to the power source at one end and fixed to the vehicle body at the other end. Many complex pipeline installations have large errors. Although traditional structures such as hoses and expansion joints can be used for error compensation and vibration buffering, they are still prone to installation inconveniences due to factors such as the actual installation space and limited compensation range. It is necessary to grind the pipelines on site according to the site conditions, which is time-consuming and labor-intensive. In addition, some pipelines work in a relatively harsh vibration environment for a long time, and the pipelines are prone to cracking and damage, which greatly reduces their service life.

[0003] Therefore, it is necessary to design a pipeline installation adaptive compensation vibration reduction mechanism to achieve adaptive and rapid installation of the pipeline and perform vibration reduction and buffering to solve the above-mentioned problems existing in the prior art. Summary of the invention

[0004] In view of this, the present invention provides a pipeline installation adaptive compensation vibration reduction mechanism, which can realize free and fast installation of the pipeline and vibration reduction and buffering.

[0005] In order to solve the above technical problems, the present invention is implemented as follows.

[0006] A pipeline mounted adaptive compensating vibration reduction mechanism, comprising:

[0007] The mounting plate has an annular base portion; at least three elastic vibration-damping components are evenly distributed around the annular base portion; the elastic vibration-damping component includes a clamping block, a vibration-damping spring, a guide column, an anti-slipping block and a spherical shaft; the spherical shaft is embedded in the annular base portion; one end of the guide column is fixedly connected to the anti-slipping block, and the other end passes through the spherical shaft and then extends into the ring of the annular base portion, first passes through the vibration-damping spring, and then is embedded in the clamping block through the ball head at the front end of the guide column;

[0008] The installation pipeline is assembled between the clamping blocks; the angle between the guide column and the installation pipeline is adapted by the rotation of the ball head at the front end of the guide column in the clamping block and the rotation of the spherical shaft; the distance between the installation pipeline and the annular base is adapted by the linear motion of the guide column in the spherical shaft.

[0009] Preferably, the clamping block is an arc-shaped bar block.

[0010] Preferably, the anti-falling block is an arc-shaped bar.

[0011] Preferably, the curvature of the anti-slip block is the same as the outer diameter of the annular base portion, and the inner surface of the anti-slip block is rubber vulcanized.

[0012] Preferably, the relationship between the inner diameter of the annular base portion, the outer diameter of the installation pipeline, the thickness of the clamping block and the vibration reduction amplitude range is: the vibration reduction amplitude range is ±[(inner diameter of the annular base portion-outer diameter of the installation pipeline) / 2-thickness of the clamping block];

[0013] Determine the unknown structural parameters according to the required vibration reduction amplitude range and some known structural parameters such as the inner diameter of the annular base, the outer diameter of the installation pipeline, and the thickness of the clamping block;

[0014] Alternatively, the vibration reduction amplitude range can be determined according to the inner diameter of the annular base, the outer diameter of the installation pipeline, and the thickness of the clamping block.

[0015] Preferably, the length of the guide column is ≥ the inner diameter of the annular base portion - the outer diameter of the installation pipeline + the maximum value of the vibration reduction amplitude range.

[0016] Preferably, the stiffness of each damping spring is determined according to the actual installation pipeline weight and installation angle of the installation pipeline.

[0017] Preferably, the stiffness of the damping spring is determined by:

[0018] K i =F i / L i

[0019]

[0020] In the formula,

[0021] K i is the stiffness of the ith damping spring; there are n damping springs in total;

[0022] F i is the force of the ith damping spring, which is determined according to the weight and installation angle of the installation pipeline;

[0023] L i is the extension or compression of the ith damping spring, which is determined according to the weight and installation angle of the installation pipeline;

[0024] θ i is the offset angle of the axis of the i-th damping spring relative to the direction of gravity;

[0025] m is the mass of the installed pipeline;

[0026] g is the acceleration due to gravity.

[0027] Preferably, the damping spring has a pre-compression amount when initially assembled.

[0028] Preferably, the vibration damping mechanism is made of high temperature resistant metal material, and the high temperature resistance is determined according to the pipeline application scenario.

[0029] Beneficial effects:

[0030] (1) The pipeline installation adaptive compensation vibration reduction mechanism of the present invention has a guide column connected to the clamping block and the installation fixed plate through a ball head and a spherical shaft, respectively, which can realize adaptive adjustment of the direction and angle of the clamping block, so that the clamping block always keeps close to the pipeline within the movable range of the pipeline. At the same time, the spring shock absorption buffer can better block the transmission of the pipeline's own vibration and improve the reliability of the pipeline. Moreover, the mechanism of the present invention only needs to insert the pipeline between the clamping blocks to realize the rapid installation of the pipeline, which is convenient and flexible.

[0031] (2) The anti-slip block of the present invention is an arc-shaped strip block, so that when the anti-slip block contacts the annular base, surface contact can be adopted as much as possible, reducing the friction between the two and improving the life of the vibration reduction assembly. Preferably, the curvature of the anti-slip block is the same as the outer diameter of the annular base, and the inner surface is rubber vulcanized to reduce the impact when colliding with the mounting fixed plate.

[0032] (3) In a preferred embodiment of the present invention, the stiffness of the vibration-damping spring is determined according to the actual demand for pipeline vibration reduction, taking into account the actual load weight and installation angle of the installed pipeline. It can ensure the pipeline installation clamping while meeting the pipeline installation redundancy, and can absorb pipeline vibration and increase the service life of the pipeline.

[0033] (4) In a preferred embodiment of the present invention, the spring is designed to have a pre-compression amount during initial assembly to ensure that the mechanism can compress the pipeline under various conditions.

[0034] (5) The present invention has a simple structure and is easy to manufacture, and can form modular and serialized products; the assembly is flexible and changeable, and is suitable for installing different types of pipelines. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic diagram of the pipeline installation adaptive compensation vibration reduction mechanism of the present invention;

[0036] Figure 2 This is a schematic diagram of the installation pipeline;

[0037] Figure 3 This is a schematic diagram for basic module installation;

[0038] Figure 4 Schematic diagram of stiffness calculation. DETAILED DESCRIPTION

[0039] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0040] This embodiment provides a pipeline installation adaptive compensation vibration reduction mechanism, such as Figure 1 As shown, it includes a mounting fixed plate 1, a clamping block 2, a damping spring 3, a guide column 4, an anti-slip block 5, and a spherical rotating shaft 6.

[0041] like Figure 2 As shown, the pipeline is fixed on the vibration reduction mechanism by direct insertion, and the vibration reduction mechanism can meet the installation and vibration reduction requirements of pipelines with different diameters.

[0042] like Figure 3 As shown, in this embodiment, the mounting plate 1 has a fixed connection portion and an annular base portion. The fixed connection portion can be a flange. The annular base portion is used to provide support for the elastic vibration damping assembly. At least three elastic vibration damping assemblies are evenly distributed around the annular base portion. The elastic vibration damping assembly includes a clamping block 2, a vibration damping spring 3, a guide column 4, an anti-slip block 5 and a spherical shaft 6. In this embodiment, four clamping blocks 2 are fixed to the mounting plate 1 through vibration damping springs 3 and guide columns 4 at an evenly distributed 90° angle.

[0043] Specifically, the spherical shaft 6 is rotatably embedded in the annular base. One end of the guide column 4 is fixedly connected to the anti-dropping block 5 to prevent the guide column from falling off abnormally. The other end of the guide column 4 passes through the spherical shaft 6 and then extends into the annular base ring, first passes through the damping spring 3, and then passes through the front end ball head of the guide column 4 and is embedded in the clamping block 2.

[0044] The ball head at the front end of the guide column 4 and the clamping block 2 can rotate relative to each other, the guide column 4 can move linearly in the spherical shaft 6, and the spherical shaft 6 also rotates under the drive of the guide column 4. These three motion relationships can adapt to any installation position of the installation pipeline in the annular base. Among them, the rotation of the ball head at the front end of the guide column and the spherical shaft 6 can adapt to different angles between the guide column 4 and the installation pipeline; the linear movement of the guide column 4 in the spherical shaft 6 can adapt to different distances between the installation pipeline and the annular base.

[0045] It can be seen that the guide column is connected to the clamping block and the mounting plate through the ball head and the spherical shaft respectively, which can realize adaptive adjustment of the direction and angle of the clamping block, so that the clamping block always keeps close to the pipeline within the movable range of the pipeline.

[0046] In a preferred embodiment, the clamping block 2 is an arc-shaped bar, so that it fits the shape of the pipeline and provides more stable support.

[0047] In a preferred embodiment, the anti-slip block 5 is also an arc-shaped strip, so that when the anti-slip block contacts the annular base, surface contact can be adopted as much as possible to reduce the friction between the two and improve the life of the vibration reduction assembly. Preferably, the curvature of the anti-slip block is the same as the outer diameter of the annular base, and the inner surface is rubber vulcanized to reduce the impact when colliding with the mounting fixed plate.

[0048] The relationship between the inner diameter of the annular base, the outer diameter of the installation pipeline, the thickness of the clamping block and the vibration reduction amplitude range is: the vibration reduction amplitude range of the vibration reduction mechanism is: L≤±[(inner diameter of the installation fixing plate-outer diameter of the installation pipeline) / 2-thickness of the clamping block].

[0049] According to this relationship, the vibration reduction amplitude range can be determined based on the known inner diameter of the annular base, the outer diameter of the installation pipeline, and the thickness of the clamping block; or the unknown structural parameters can be determined when the required vibration reduction amplitude range and some of the known structural parameters such as the inner diameter of the annular base, the outer diameter of the installation pipeline, and the thickness of the clamping block are known. For example, when the model parameters of the mounting fixing plate have been determined, but the specific size of the outer diameter of the mounting pipeline is unknown: the outer diameter of the mounting pipeline must at least be less than the inner diameter of the mounting fixing plate minus 2 times the thickness of the clamping block, so that the mounting pipeline can be inserted into the mounting fixing plate, otherwise it will exceed the applicable range and cannot be installed. For another example, when the outer diameter of the mounting pipeline is known, the inner diameter of the annular base can be designed according to the thickness of the clamping block and the vibration reduction amplitude range requirements.

[0050] Furthermore, the adaptable installation error compensation range of the vibration reduction mechanism is determined according to the outer diameter of the installation pipeline, the inner diameter of the installation fixing plate and the thickness of the clamping block: L=(inner diameter of the installation fixing plate-outer diameter of the installation pipeline) / 2-thickness of the clamping block.

[0051] The length of the guide column ≥ the inner diameter of the annular base - the outer diameter of the installation pipeline + the maximum value of the vibration reduction amplitude range. The guide column length parameter design must meet this formula. If it is too short, when the vibration reduction amplitude reaches the maximum, some basic modules will be separated from the pipeline, resulting in the pipeline being unable to clamp.

[0052] The stiffness of the damping spring is determined according to the actual requirements of pipeline vibration reduction, taking into account the actual load weight and installation angle of the installed pipeline. Figure 4 As shown in the figure, the calculation formula of the damping spring stiffness is:

[0053] K i =F i / L i

[0054]

[0055] In the formula,

[0056] K i is the stiffness of the ith damping spring; there are n damping springs in total;

[0057] F i is the force of the ith damping spring, which is determined according to the weight and installation angle of the installation pipeline;

[0058] L i is the elongation or compression of the ith damping spring, which is determined according to the weight of the installation pipeline and the installation angle, and is the pre-compression / pre-elongation of the spring in the static state after installation;

[0059] θ i is the offset angle of the axis of the i-th damping spring relative to the gravity direction of the geodetic coordinate system, that is, the vertical direction;

[0060] m is the mass of the installed pipeline;

[0061] g is the acceleration due to gravity, 9.8 m / s 2 .

[0062] It should be emphasized that the stiffness of each spring in the mechanism can be set differently according to actual needs, or it can take the same value by default.

[0063] In a preferred embodiment, when the mechanism is initially assembled, it is considered that the spring has a pre-compression amount L0 to ensure that the mechanism can compress the pipeline under various conditions.

[0064] In a preferred embodiment, the length of the ball head guide column is ≥ the inner diameter of the mounting fixing plate - the outer diameter of the mounting pipeline + the maximum value of the vibration reduction amplitude range.

[0065] The vibration reduction mechanism of the present invention is made of high temperature resistant metal material to meet the requirements of different pipelines. The high temperature resistant temperature is determined according to the pipeline application scenario.

[0066] In this embodiment, the outer diameter of the pipeline is 50 mm, the inner diameter of the mounting plate 1 is 100 mm, the thickness of the clamping block 2 is 5 mm, and the vibration reduction amplitude range of the vibration reduction mechanism is: L≤±(inner diameter of the mounting plate 1-outer diameter of the mounting pipeline) / 2-thickness of the clamping block 2=±20 mm.

[0067] In this embodiment, the installation error compensation range is determined according to the outer diameter of the installation pipeline, the inner diameter of the installation fixing plate 1 and the thickness of the clamping block 2: L = (installation fixing plate inner diameter - installation pipeline outer diameter) / 2 - clamping block thickness = 20 mm.

[0068] like Figure 4 As shown, in this embodiment, the actual weight of the pipeline is 0.5 kg, and the stiffness value of the damping spring 3 is calculated as follows:

[0069] K=F i / L i ;

[0070] F=F1*cosθ1+(-F2*cosθ2)+F3*cosθ3+(-F4*cosθ4)=mg.

[0071] In the formula,

[0072] F i , the force of the i-th damping spring;

[0073] L i , the extension or compression of the i-th damping spring;

[0074] θ i , the offset angle of the i-th damping spring.

[0075] m, installation pipeline quality;

[0076] g, acceleration due to gravity, 9.8 m / s 2 .

[0077] It should be emphasized that the stiffness of each damping spring 3 in the mechanism can be set differently according to actual needs, and the same value is taken by default.

[0078] Here is an example.

[0079] In this example, the pre-compression amount L3 of the damping spring 3 is 25 mm during initial assembly.

[0080] In this example, the initial value of the stiffness of the damping spring 3 is determined by the initial ideal installation position, that is, θ1=θ2=0; θ3=θ4, L1=L2, then K*(L1+L2)=mg; then K=mg / 2(L1+L2)=0.5*9.8÷2(L1+L2). In this embodiment, L1(L2) is set to 5mm, then the stiffness of the damping spring 3 is K=4900N / m.

[0081] In this example, the ball guide post 4 is 40 mm long.

[0082] In this example, the mechanism is made of high temperature resistant alloy steel and can adapt to the temperature range of -30°C to +250°C.

[0083] In this example, the inner surface of the arc of the anti-slip block 5 is vulcanized with rubber to reduce the impact when colliding with the mounting fixing plate 1.

[0084] The above specific embodiments only describe the design principle of the present invention. The shapes and names of the components in the description may be different and are not limited. Therefore, those skilled in the art in the field of the present invention may modify or replace the technical solutions recorded in the above embodiments; and these modifications and replacements do not deviate from the creative purpose and technical solutions of the present invention and should all fall within the protection scope of the present invention.

Claims

1. A pipeline-mounted adaptive compensating vibration reduction mechanism, characterized in that: include: The mounting plate (1) has an annular base portion; at least three elastic vibration-damping components are evenly distributed in the circumferential direction of the annular base portion; the elastic vibration-damping component comprises a clamping block (2), a vibration-damping spring (3), a guide column (4), an anti-slip block (5) and a spherical shaft (6); the spherical shaft (6) is embedded in the annular base portion; one end of the guide column (4) is fixedly connected to the anti-slip block (5), and the other end passes through the spherical shaft (6) and then extends into the annular base portion ring, first passes through the vibration-damping spring (3), and then is embedded in the clamping block (2) through the ball head at the front end of the guide column (4); The installation pipeline is assembled between the clamping blocks (2); the angle between the guide column (4) and the installation pipeline is adapted by the rotation of the ball head at the front end of the guide column (4) in the clamping block (2) and the rotation of the spherical shaft (6); and the distance between the installation pipeline and the annular base portion is adapted by the linear movement of the guide column (4) in the spherical shaft (6).

2. The pipeline-mounted adaptive compensating vibration reduction mechanism according to claim 1, characterized in that: The clamping block (2) is an arc-shaped strip block.

3. The pipeline-mounted adaptive compensating vibration reduction mechanism according to claim 1, characterized in that: The anti-falling block (5) is an arc-shaped strip block.

4. The pipeline-mounted adaptive compensating vibration reduction mechanism according to claim 3, characterized in that: The curvature of the anti-slip block (5) is the same as the outer diameter of the annular base portion, and the inner surface of the anti-slip block is rubber vulcanized.

5. The pipeline-mounted adaptive compensating vibration reduction mechanism according to claim 1, characterized in that: The relationship between the inner diameter of the annular base, the outer diameter of the installation pipeline, the thickness of the clamping block and the vibration reduction amplitude range is: The vibration reduction range is ±[(inner diameter of the annular base - outer diameter of the installation pipe) / 2 - thickness of the clamping block]; Determine the unknown structural parameters according to the required vibration reduction amplitude range and some known structural parameters such as the inner diameter of the annular base, the outer diameter of the installation pipeline, and the thickness of the clamping block; Alternatively, the vibration reduction amplitude range can be determined according to the inner diameter of the annular base, the outer diameter of the installation pipeline, and the thickness of the clamping block.

6. The pipeline-mounted adaptive compensating vibration reduction mechanism according to claim 5, characterized in that: The length of the guide column is ≥ the inner diameter of the annular base portion - the outer diameter of the installation pipeline + the maximum value of the vibration reduction amplitude range.

7. The pipeline-mounted adaptive compensating vibration reduction mechanism according to claim 1, characterized in that: The stiffness of each damping spring (3) is determined according to the actual installation pipeline weight and installation angle of the installation pipeline.

8. The pipeline-mounted adaptive compensating vibration reduction mechanism according to claim 7, characterized in that: The stiffness of the damping spring (3) is determined by: K i =F i / L i In the formula, K i is the stiffness of the ith damping spring; there are n damping springs in total; F i is the force of the ith damping spring, determined according to the weight and installation angle of the installation pipeline; L i is the extension or compression of the ith damping spring, which is determined according to the weight and installation angle of the installation pipeline; θ i is the offset angle of the axis of the i-th damping spring relative to the direction of gravity; m is the mass of the installed pipeline; g is the acceleration due to gravity.

9. The pipeline-mounted adaptive compensating vibration reduction mechanism according to claim 1, characterized in that: The damping spring has a pre-compression amount when initially assembled.

10. The pipeline-mounted adaptive compensating vibration reduction mechanism according to claim 1, characterized in that: The vibration reduction mechanism is made of high temperature resistant metal material, and the high temperature resistance is determined according to the pipeline application scenario.

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