CN209927394U - High-precision corrugated pipe ring rigidity testing device - Google Patents

Abstract

The utility model discloses a high accuracy bellows ring rigidity testing arrangement is applicable to the ring rigidity test of the tubular product of placing on the test machine, the test machine can exert the effort to the tubular product, the device includes the base that sets up in test machine one side, be equipped with a stand on the base, the pivot is equipped with the lever that is mirror image structure setting on the stand, one end of lever extends to be arranged in the tubular product, is equipped with the detection component that is used for detecting its levelness on the other end; and a top block is fixedly arranged on the lever extending into the pipe, and the top block is in point contact with the inner wall of the pipe. The utility model discloses mainly appear: the structure is exquisite, realizes the accurate monitoring to the change of tubular product inner wall, improves the test precision. Structurally, be the point contact between kicking block and the tubular product, when tubular product atress warp, tubular product only can exert the effort to the point with the kicking block contact, can not receive the interference of the power of other directions, improves the accuracy of tubular product ring rigidity testing result.

Description

High-precision bellows ring stiffness testing device

technical field

The utility model relates to the technical field of bellows detection, in particular to a high-precision bellows ring stiffness testing device.

Background technique

One of the key indicators in the detection of bellows is ring stiffness. Ring stiffness is a comprehensive parameter of the bellows' ability to resist external pressure loads. In order to ensure that bellows work safely under external pressure loads, ring stiffness is one of the keys to testing. If the ring stiffness of the pipe is too small, the pipe may undergo excessive deformation or buckling failure. Conversely, if the ring stiffness is selected too high, an excessively large moment of inertia of the section will inevitably be used, which will result in too much material and high cost.

In the existing testing technology, a pipe sample is cut and tested under pressure on a ring stiffness testing machine. The pressure test is to place the circumference of the sample on the working table of the testing machine, and support the test sensor inside the sample, use the pressure plate to slowly press the sample, and detect the deformation of the sample through the sensor to calculate the test. similar ring stiffness. However, in the prior art, a displacement sensor is usually used to read the change between the outer diameters of the pipe to judge the ring stiffness, but the data change of the inner diameter of the pipe cannot be measured, which often makes the test data inaccurate.

Therefore, there is an urgent need for a high-precision bellows ring stiffness testing device.

Utility model content

The purpose of the utility model is to overcome the shortcomings of the prior art and provide a high-precision bellows ring stiffness testing device.

The purpose of the present utility model is achieved through the following technical solutions:

A high-precision bellows ring stiffness testing device, suitable for ring stiffness testing of pipes placed on a testing machine, the testing machine can apply force to the pipe, the device comprises a base arranged on one side of the testing machine. The base is provided with an upright column, the pivot shaft of the upright column is provided with a lever arranged in a mirror image structure, one end of the lever is extended and placed in the pipe material, and the other end is provided with a lever for detecting its levelness. A detection assembly; a top block is fixed on the lever extended and placed in the pipe material, and the top block is in point contact with the inner wall of the pipe material.

Preferably, the cross section of the top block is an isosceles triangle.

Preferably, a sliding sleeve is sleeved on the vertical column, a bolt hole is formed on the sliding sleeve, and a locking bolt can pass through the bolt hole and press against the vertical column to limit the sliding sleeve to the vertical column. an extension block is fixed on the sliding sleeve, a plug is fixed on the extension block, the central axis of the plug is perpendicular to the central axis of the lever, and the lever is rotatably sleeved on the on the pin.

Preferably, the detection assembly includes a support column fixed on the sliding sleeve, a connecting rod is pivotally provided on the support column, and a dial indicator is fixed at the other end of the connecting rod. The probe of the sub-meter is in contact with the surface of the lever.

The beneficial effects of the utility model are mainly reflected in: the structure is exquisite, the precise monitoring of the change of the inner wall of the pipe material is realized, and the test accuracy is improved. On the structure, there is point contact between the top block and the pipe. When the pipe is deformed by force, the pipe will only exert force on the point in contact with the top block, and will not be disturbed by forces in other directions, improving the test results of the pipe ring stiffness. accuracy. At the same time, by adjusting the height of the sliding sleeve, the measurement of the inner diameter of corrugated pipes of different specifications can be realized, which has a wide applicability.

Description of drawings

Below in conjunction with accompanying drawing, the technical scheme of the present utility model is further described:

Fig. 1: The structure schematic diagram of this utility model.

Detailed ways

The present invention will be described in detail below with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments are not limited to the present invention, and structural, method, or functional transformations made by those of ordinary skill in the art based on these embodiments are all included within the protection scope of the present invention.

Not limited to the present invention, the structural, method, or functional transformations made by those of ordinary skill in the art according to these embodiments are all included in the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "horizontal", "upper", "lower", "front", "rear", "left", "right", The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility. The novel and simplified description does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first", "second", etc., may expressly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

In the description of the present invention, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a connectable connection. Detachable connection, or integral connection; may be mechanical connection or electrical connection; may be direct connection, or indirect connection through an intermediate medium, or internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

The present utility model will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

As shown in FIG. 1 , the present invention discloses a high-precision bellows ring stiffness testing device, which is suitable for testing the ring stiffness of pipes 100 placed on a testing machine (not shown in the figure). The pipe 100 exerts a force F. At present, in the industry, the pipe 100 is usually placed on the workbench of the testing machine, and the sample is slowly pressed by the pressing plate, so as to calculate the ring stiffness of the pipe.

In the present invention, the device includes a base 1 disposed on one side of the testing machine, a column 2 is arranged on the base 1, and two sliding sleeves 21 are sleeved on the column 2, each of which is The sliding sleeve 21 is provided with a bolt hole 22 , and a locking bolt 23 can penetrate through the bolt hole 22 and press against the upright column 2 to limit the sliding sleeve 21 on the upright column 2 . The height of the sliding sleeve can be adjusted by twisting the locking bolt 23 to realize the measurement of the inner diameter of the bellows of different specifications, which has wide applicability.

An extension block 23 is fixed on the sliding sleeve 21, and a plug pin 24 is fixed on the extension block 23. The central axis of the plug pin 24 is perpendicular to the central axis of the lever 3, and the lever 3 is rotatable. sleeved on the plug 24 . One end of the lever 3 extends into the pipe 100, and a top block 31 is fixed on the lever 3 extending into the pipe 100. The cross section of the top block 31 is an isosceles triangle. The cross-section of the top block 31 can also be other shapes, which are all within the protection scope of the present invention. It is only necessary to ensure that the top block 31 and the inner wall of the pipe 100 are in point contact. On the structure, there is point contact between the top block and the pipe. When the pipe is deformed by force, the pipe will only exert force on the point in contact with the top block, and will not be disturbed by forces in other directions, improving the test results of the pipe ring stiffness. accuracy.

The other end of the lever 3 is provided with a detection component 4 for detecting its levelness. The detection component 4 includes a support column 41 fixed on the sliding sleeve 21 . The support column 41 is pivotally provided with a The connecting rod 42 is fixed with a dial indicator 43 at the other end of the connecting rod 42 , and the measuring head of the dial indicator 43 is in contact with the surface of the lever 3 .

The beneficial effects of the utility model are mainly reflected in: the structure is exquisite, the precise monitoring of the change of the inner wall of the pipe material is realized, and the test accuracy is improved. On the structure, there is point contact between the top block and the pipe. When the pipe is deformed by force, the pipe will only exert force on the point in contact with the top block, and will not be disturbed by forces in other directions, improving the test results of the pipe ring stiffness. accuracy. At the same time, by adjusting the height of the sliding sleeve, the measurement of the inner diameter of corrugated pipes of different specifications can be realized, which has a wide applicability.

It should be understood that although this specification is described in terms of embodiments, not every embodiment only includes an independent technical solution, and this description in the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole, and each The technical solutions in the embodiments can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

A series of detailed descriptions listed above are only specific descriptions for the feasible embodiments of the present invention, and they are not intended to limit the protection scope of the present invention. Any equivalents made without departing from the technical spirit of the present invention Embodiments or changes should all be included within the protection scope of the present invention.

Claims (4)

1. High accuracy bellows ring rigidity testing arrangement is applicable to the ring rigidity test of placing tubular product (100) on the test machine, the test machine can exert effort (F) to tubular product (100), its characterized in that: the device comprises a base (1) arranged on one side of the testing machine, wherein an upright post (2) is arranged on the base (1), a lever (3) arranged in a mirror image structure is arranged on the upright post (2) in a pivot manner, one end of the lever (3) extends into the pipe (100), and a detection assembly (4) for detecting the levelness of the pipe is arranged on the other end of the lever; a top block (31) is fixedly arranged on a lever (3) extending into the pipe (100), and the top block (31) is in point contact with the inner wall of the pipe (100).

2. The high-precision bellows ring rigidity testing device according to claim 1, characterized in that: the cross section of the top block (31) is in an isosceles triangle shape.

3. The high-precision bellows ring rigidity testing device according to claim 2, characterized in that: a sliding sleeve (21) is sleeved on the upright post (2), a bolt hole (22) is formed in the sliding sleeve (21), a locking bolt (23) can penetrate through the bolt hole (22) and is pressed on the upright post (2), and the sliding sleeve (21) is limited on the upright post (2); an extension block (25) is fixedly arranged on the sliding sleeve (21), a bolt (24) is fixedly arranged on the extension block (25), the central axis of the bolt (24) is perpendicular to the central axis of the lever (3), and the lever (3) can be sleeved on the bolt (24) in a rotation manner.

4. A high accuracy bellows ring rigidity testing arrangement according to claim 3, characterized by: the detection assembly (4) comprises a support column (41) fixedly arranged on the sliding sleeve (21), a connecting rod (42) is arranged on the support column (41) in a pivot mode, a dial indicator (43) is fixedly arranged at the other end of the connecting rod (42), and a measuring head of the dial indicator (43) is in surface contact with the lever (3).

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