CN217358916U

CN217358916U - Simple and easy vibration frock gravity center line positioner

Info

Publication number: CN217358916U
Application number: CN202221122126.2U
Authority: CN
Inventors: 卢俊宇; 蒋超; 向英杰; 宋江
Original assignee: Guizhou Yonghong Aviation Machinery Co Ltd
Current assignee: Guizhou Yonghong Aviation Machinery Co Ltd
Priority date: 2022-05-11
Filing date: 2022-05-11
Publication date: 2022-09-02
Anticipated expiration: 2032-05-11

Abstract

The utility model provides a simple and easy vibration frock gravity center line positioner constitutes such as ground, horizontal mesa, rail guard, extension board, holding ring, U-shaped pipe and elasticity rope. The horizontal table top is placed on the ground, and the basic levelness of the horizontal table top is ensured by the height gauge. The height of the guard rail is higher than the thickness of the bottom plate of the vibration tool, the guard rail is welded on the horizontal table-board, and the guard rail can prevent the tool from sliding off and smashing an operator; the support plate is welded in the middle of the horizontal table top, can support the vibration tool bottom plate, and is in line contact with the vibration tool bottom plate. The U-shaped pipe is inserted in the positioning rings on two sides of the support plate, the elastic rope is connected to two parallel edges of the U-shaped pipe and can be stretched freely, and the length of the elastic rope is enough to cover the whole vibration tool and the whole vibration product. The utility model discloses can find the focus line position of vibration frock and product fast, convenient follow-up expansion vibration test.

Description

Simple and easy vibration frock gravity center line positioner

Technical Field

The utility model belongs to the technical field of the vibration test, especially the positioner of product and vibration frock assembly back gravity center line during vibration test.

Background

The vibration tool needs to be designed during the product vibration test and is used for simulating the installation posture of a product on an airplane, so that the vibration tool is often an irregular geometric body, the gravity center of the vibration tool can not be determined through simple geometric operation, when the gravity center of the tool and the gravity center of a vibration table surface are greatly deviated, the vibration response control of the vibration table can be influenced, the control error is increased, meanwhile, the vibration table is damaged due to unbalance loading, the service life of equipment is shortened, and the fault frequency is increased. Therefore, after the product is installed on the vibration tool, the whole gravity center of the vibration tool and the product needs to be quickly and simply measured, so that the accuracy of control of the vibration test and the service life of the test bed are guaranteed.

Disclosure of Invention

The utility model aims at providing a simple and easy vibration frock gravity center line positioner to solve the unable judgement of current vibration frock focus, lead to equipment failure, the problem of control difficulty, and operation process is simple swift.

In order to solve the problem, the utility model adopts the following technical scheme:

a simple and easy vibration frock gravity center line positioning device comprises,

the horizontal table top comprises an upper end surface and a lower end surface which are parallel to each other;

the protective guard is arranged along the edge of the upper end face of the horizontal table top, and the upper end of the protective guard is higher than the upper end face of the horizontal table top by a certain distance;

the support plate is fixedly connected to the middle position of the upper end face of the horizontal table top, the shape of the upper end of the support plate is matched with the molded surface of the bottom plate of the vibration tool, so that the vibration tool and the support plate are in a linear contact state when placed at the upper end of the support plate, and the vertical distance from the upper end of the support plate to the upper end face of the horizontal table top is smaller than the vertical distance from the upper end of the protective guard to the position higher than the horizontal table top;

the positioning rings are fixedly connected to the two ends of the support plate in the length direction;

the two ends of the U-shaped pipe are inserted into the positioning rings;

the two ends of the elastic rope are respectively connected to the two parallel edges of the U-shaped pipe.

Furthermore, the horizontal table top is placed above the ground, and the upper end face of the horizontal table top is rectangular or square.

Preferably, the length and the width of the upper end face of the horizontal table top are 1200 mm × 1200 mm respectively;

preferably, the distance from the upper end of the guard rail to the horizontal table top is greater than the thickness of the bottom plate of the vibration tool, and the guard rail is welded on the horizontal table top;

preferably, the support plate is welded in the middle of the upper end face of the horizontal table-board.

Preferably, the flatness between the upper end surface of the horizontal table top and the ground is less than or equal to 0.02, and the bearing capacity of the horizontal table top is more than 1 ton.

Preferably, the upper end of the support plate is of a round structure.

The utility model discloses a simple and easy vibration frock line of gravity positioner mainly comprises ground, horizontal mesa, rail guard, extension board, U-shaped pipe, holding ring and elasticity rope etc.. The horizontal table top is placed on the ground, and the basic levelness of the horizontal table top is ensured by the height gauge. The height of the protective guard is higher than the thickness of the bottom plate of the vibration tool, the protective guard is welded on the horizontal table top, and the protective guard can prevent the tool from sliding down and injuring an operator; the support plate is welded in the middle of the horizontal table top, can support the vibration tool bottom plate, and is in line contact with the vibration tool bottom plate. The U-shaped pipe is spliced with the positioning rings at the two ends of the support plate, the elastic rope is connected to the U-shaped pipe and can be elastically stretched, and the stretched length is enough to cover the whole vibration tool and product.

Use the utility model discloses when carrying out the focus location, regard as a whole with vibration frock and product (follow-up direct adoption frock description), place the extension board with vibration frock bottom plate on, promote the frock and remove, reach the balance until the frock, use the contact line of extension board as the boundary promptly, the weight of boundary both sides reaches the balance, insert the position ring of extension board both sides with the U-shaped pipe, make the elasticity rope press on the frock surface and draw a line (be stained with printing ink on the elasticity rope), then rotatory frock arbitrary angle, reach balanced back once more when the frock on the extension board, another line is drawn on the frock surface to the rethread elasticity rope, obtain the nodical of two lines, it can obtain the line of gravity with this nodical perpendicular line with ground.

In view of the frock (the combination of vibration frock and product) focus positioner that does not provide to the vibration test among the prior art, and require frock focus and test bench mesa focus to keep on a focus line basically during the vibration test again, consequently designed the utility model discloses a simple and easy vibration frock gravity center line positioner, and then fix a position out the gravity center line of frock, by the operator with this installation frock again, satisfy basic installation requirement, guarantee vibration test's the control accuracy and the life of test bench.

Drawings

FIG. 1 is a schematic structural view of a center-of-gravity line positioning device of a simple and easy vibration tool of the present invention;

FIG. 2 is a schematic view of the simple vibration tool after the vibration tool and the product are placed on the positioning device for the center line of gravity of the simple vibration tool;

in the figure: 1. a ground surface; 2. a horizontal table top; 3. protecting the fence; 4. a support plate; 5. a U-shaped tube; 6. a positioning ring; 7 elastic ropes.

Detailed Description

The following describes the embodiments of the present invention with reference to the drawings, but the scope of the claims of the present invention is not limited to the embodiments.

As shown in fig. 1, the present embodiment provides a simple and easy vibration tool center of gravity positioning device, which includes a ground 1, a horizontal table 2, a guard rail 3, a support plate 4, a U-shaped tube 5, a positioning ring 6, and an elastic rope 7.

The horizontal table top 2 is a structure with certain compression resistance and bearing capacity, and the structure comprises an upper end face in a horizontal state and a lower end face parallel to the upper end face;

the protective guard 3 is arranged along the edge of the upper end face of the horizontal table top 2, and the upper end of the protective guard 3 is higher than the upper end face of the horizontal table top 2 by a certain distance and is used for preventing the products and the vibration tools from falling down to cause injury to people when moving on the support plate 4;

the extension board 4 fixed connection is in the up end intermediate position of horizontal mesa 2, extension board 4 upper end shape and vibration frock bottom plate profile match for the two is in the line contact state when the vibration frock is placed on extension board 4, and in this embodiment, the vibration frock bottom plate is the plane, and the up end of extension board 4 is radius and is handled, promptly circular arc face and plane contact, and the vertical distance of extension board 4 upper end to 2 up end of horizontal mesa is less than the vertical distance that the upper end of rail guard 3 is higher than horizontal mesa 2. The support plate 4 is used for supporting the vibration tool bottom plate to move (slide) above the vibration tool bottom plate, the support plate 4 is usually welded in the middle of the horizontal table top 2, and the support plate 4 is of a plate-shaped structure, has certain pressure bearing capacity and is not easy to deform.

The positioning rings 6 and the positioning rings 6 are 4 circular rings, are welded at two ends of the support plate 4 and are used for fixing the position of the U-shaped pipe 5 and ensuring that the U-shaped pipe 5 is inserted in a state of being perpendicular to the upper end face of the horizontal table top 2.

The U-shaped tube 5 is shaped as shown in fig. 1 and 2 with parallel sides inserted into the holes of the retaining ring 6 on either side of the support plate 4.

The both ends of elasticity rope 7 are connected with two parallel limits of U-shaped pipe 5 respectively, and elasticity rope 7 has soaked printing ink, and after U-shaped pipe 5 inserted holding ring 6, elasticity rope 7 hugged closely with the vibration frock surface, and the maximum tensile length of elasticity rope 7 satisfies the surface that can cover the vibration frock, and elasticity rope 7 is used for compressing tightly on the product surface and rule.

The use method of the simple vibration tool gravity center positioning device comprises the following steps:

step one, as shown in fig. 1 and fig. 2, fixing a horizontal table top 2 to the ground 1, ensuring that the upper end surface of the horizontal table top 2 has a certain levelness, welding a support plate 4 and a protective guard 3 to the horizontal table top 2, respectively welding 4 positioning rings 6 on two sides of the support plate 4 according to 2 on one side, ensuring that after welding, the axis of an inner hole of each positioning ring 6 is perpendicular to the upper end surface of the horizontal table top 2, and fixing two ends of an elastic rope 7 and two parallel sides of a U-shaped pipe 5, namely completing the assembly of the simple vibration tool gravity center positioning device.

And step two, the bottom plate of the vibration tool is usually a flat square or rectangle with the thickness of 30mm, other parts of the vibration tool are irregular, and the other parts are fixedly connected with a product to be tested. The vibration tool is lifted or hoisted by a crane, a hand hoist and the like and is lightly placed on the support plate 4 of the gravity center positioning device of the simple vibration tool, and the bottom plate of the vibration tool is in line contact with the upper end of the support plate 4.

And step three, pushing a tool (the whole of the vibration tool and the product) on the support plate 4, pulling up the overweight tool (the whole of the vibration tool and the product) by using a crane and then moving the overweight tool, wherein when the weight of the tool on two sides of the support plate 4 is balanced (namely, the contact line of the support plate 4 and the tool is used as a boundary plane, and the left side and the right side of an observation plane), the tool cannot slide towards one side and is considered to be balanced, and the gravity center of the tool at the moment is always on the line corresponding to the support plate 4.

Inserting the U-shaped pipe 5 into the positioning ring 6, enabling the elastic rope 7 to be tightly attached to the surface of the tool, enabling the contact lines of the elastic rope 5 and the support plate 4 and the tool to be located in a plane perpendicular to the upper end face of the horizontal table top 2 at the same time, namely enabling the center of gravity of the tool to be located on the line corresponding to the elastic rope 7, and marking a line on the surface of the tool through ink soaked by the elastic rope 7.

And fifthly, rotating the tool again, wherein the rotation angle is 90 degrees and can be smaller than 90 degrees, but the rotation angle is as large as possible, so that the second line marked on the surface of the tool by the elastic rope 7 is prevented from being too close to the first line. And repeating the third step and the fourth step to obtain a second line, wherein the two lines pass through the center of gravity of the tool, and the intersection point of the two lines is taken as a line vertical to the ground, namely the gravity center line, which is the only line. When the tool is installed, the intersection point is basically overlapped with the gravity center of the vibration table, so that the vibration response control of the vibration table can be ensured, the control error is reduced, and the damage to the vibration table caused by unbalance loading is reduced. Because the manual installation operation test is adopted, the gravity center is not required to be completely found, and the gravity centers are completely overlapped, so that the simple vibration tool gravity center line positioning device meets the basic requirements of use.

In the embodiment, the product to be tested is installed on the special vibration tool and then placed on the gravity line positioning device of the simple vibration tool, the gravity line is confirmed through twice movement, the tool is installed on the vibration table board, the vibration test is started, vibration response of each point of the tool is good, and the error is small.

The above-mentioned embodiment is not used for limiting the protection scope of the utility model discloses a all be in the utility model discloses a deformation, modification or equivalence replacement etc. that make on the technical scheme basis all should fall into the protection scope of the utility model.

Claims

1. The utility model provides a simple and easy vibration frock gravity center line positioner which characterized in that: comprises the steps of (a) preparing a substrate,

the horizontal table top (2) comprises an upper end surface and a lower end surface which are parallel to each other;

the protective guard (3) is arranged along the edge of the upper end face of the horizontal table top (2), and the upper end of the protective guard (3) is higher than the upper end face of the horizontal table top (2) by a certain distance;

the support plate (4) is fixedly connected to the middle position of the upper end face of the horizontal table top (2), the shape of the upper end of the support plate (4) is matched with the molded surface of a bottom plate of the vibration tool, so that the vibration tool is in a linear contact state when placed at the upper end of the support plate (4), and the vertical distance from the upper end of the support plate (4) to the upper end face of the horizontal table top (2) is smaller than the vertical distance from the upper end of the protective guard (3) to be higher than the horizontal table top (2);

the positioning rings (6), the positioning rings (6) are fixedly connected to the two ends of the support plate (4) in the length direction;

the two ends of the U-shaped pipe (5) are inserted into the positioning rings (6);

the two ends of the elastic rope (7) are respectively connected to the two parallel edges of the U-shaped pipe (5).

2. The simple and easy vibration frock center of gravity line positioner of claim 1, characterized in that: the horizontal table top (2) is placed above the ground (1), and the upper end face of the horizontal table top (2) is rectangular or square.

3. The simple and easy vibration frock center of gravity line positioner of claim 1, characterized in that:

the length and the width of the upper end surface of the horizontal table top (2) are 1200 mm-1200 mm respectively;

the upper end of the protective guard (3) is higher than the horizontal table top (2) by a distance which is larger than the thickness of the bottom plate of the vibration tool, and the protective guard (3) is welded on the horizontal table top (2);

the support plate (4) is welded in the middle of the upper end face of the horizontal table top (2).

4. The simple vibration tool gravity center line positioning device according to claim 3, characterized in that: the flatness between the upper end surface of the horizontal table top (2) and the ground (1) is less than or equal to 0.02, and the bearing capacity of the horizontal table top (2) is more than 1 ton.

5. The simple and easy vibration frock center of gravity line positioner of claim 1, characterized in that: the upper end of the support plate (4) is of a round structure.