Corrugated pipe testing device

Abstract

The utility model discloses a corrugated pipe testing device, which comprises a base and a vertical plate vertically arranged on the top of the base, a top seat and a bottom seat are respectively arranged above and below the front side of the vertical plate, a lifting structure is arranged between the top seat and the bottom seat, the lifting structure drives a sliding seat to move up and down, and a mounting seat is arranged on the front side of the sliding seat. According to the length of the corrugated pipe, the driving unit is used for driving the lead screw to drive the sliding seat to move, the initial distance between the two three-jaw chucks is adjusted, then flanges at the two ends of the corrugated pipe are clamped and fixed through the three-jaw chucks, the corrugated pipe is compressed and stretched through repeated rotation of the lead screw, and the fatigue strength of the corrugated pipe is tested. Meanwhile, the corrugated pipe can be stretched and compressed, the reading strips at the two ends of the corrugated pipe and in the observation opening are matched with the ruler rod through the infrared emitter to measure whether the maximum stretching length and the maximum compression length of the corrugated pipe meet the production requirement or not, and the corrugated pipe stretching and compressing ruler has multiple purposes and is wide in applicability.

Description

Technical Field

[0001] The utility model relates to the technical field of corrugated pipes, in particular to a corrugated pipe testing device. Background Art

[0002] A corrugated pipe is a tubular elastic sensitive element formed by connecting collapsible corrugated sheets along the folding and telescoping direction. Corrugated pipes are widely used in instruments and meters. Their main purpose is to serve as a measuring element for pressure measuring instruments, converting pressure into displacement or force. The corrugated pipe wall is relatively thin, with high sensitivity, and the measurement range is from dozens of pascals to dozens of megapascals. Its open end is fixed, and the sealed end is in a free state, and an auxiliary spiral spring or reed is used to increase elasticity; in the corrugated pipe test, it is necessary to measure its fatigue strength, maximum tensile length, and minimum compression length. Conventionally, different devices are required separately, which is relatively complex and has low efficiency. Content of the Utility Model

[0003] The purpose of the utility model is to solve the deficiencies in the prior art and propose a corrugated pipe testing device.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A corrugated pipe testing device includes a base and a vertical plate installed on top of it. A top seat and a bottom seat are respectively installed on the front side of the vertical plate, an elevating structure is arranged between the top seat and the bottom seat, the elevating structure drives a sliding seat to move up and down, an installation seat is installed on the front side of the sliding seat, and three-jaw chucks for clamping and fixing the corrugated pipe are arranged on one side of the installation seat corresponding to the base. A height measuring component is arranged at the bottom of the base.

[0006] Preferably, the elevating structure includes a driving unit installed on the base. The output end of the driving unit is connected to a lead screw. The two ends of the lead screw are respectively rotatably connected to the top seat and the bottom seat. The lead screw is threadedly connected to the sliding seat, and the sliding seat is slidably connected to a slide rail fixed on the vertical plate.

[0007] Preferably, the height measuring component includes a scale rod arranged on the base. Two sliding sleeves are slidably connected to the scale rod. An infrared emitter is arranged on one side of the sliding sleeve close to the three-jaw chuck. An observation port is arranged on the front side of the sliding sleeve, and a reading strip is arranged on the inner wall of the observation port. The reading strip and the infrared emitter are in the same horizontal plane.

[0008] Preferably, the sliding sleeve and the scale rod are in interference fit.

[0009] Preferably, the upper end of the lead screw penetrates through the top seat and is connected to the input end of an encoder, and the encoder is fixed on the top seat.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows: According to the length of the corrugated pipe, the driving unit is used to drive the lead screw to drive the sliding seat to move, so as to adjust the initial distance between the two three-jaw chucks. Subsequently, the flanges at both ends of the corrugated pipe are clamped and fixed by the three-jaw chucks. The corrugated pipe is compressed and stretched by repeatedly rotating the lead screw to test the fatigue strength of the corrugated pipe. At the same time, the corrugated pipe can also be stretched and compressed. The infrared emitter is used at both ends of the corrugated pipe, and the reading strip in the observation port is used in cooperation with the scale rod to measure whether the maximum tensile length and compression length of the corrugated pipe meet the production requirements. It has multiple uses and wide applicability. Brief Description of the Drawings

[0011] In order to more specifically and intuitively illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art.

[0012] Figure 1 Structural Schematic Diagram Proposed by the Present Utility Model Figure 1 ;

[0013] Figure 2 Structural Schematic Diagram Proposed by the Present Utility Model Figure 2 ;

[0014] Figure 3 is Figure 1 Enlarged View of Part A Structure in

[0015] In the figure: base 1, three-jaw chuck 2, driving unit 3, lead screw 4, slide rail 5, sliding seat 6, mounting seat 7, vertical plate 8, top seat 9, encoder 10, base 11, infrared emitter 12, scale rod 13, sliding sleeve 14, observation port 15, reading strip 16. Detailed Embodiment

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0017] Refer to Figures 1 - 3 , a corrugated pipe testing device, including a base 1 and a vertical plate 8 arranged on the top thereof. A top seat 9 and a base 11 are respectively installed on the upper and lower sides of the front side of the vertical plate 8. A lifting structure is arranged between the top seat 9 and the base 11, and the lifting structure drives the sliding seat 6 to move up and down. A mounting seat 7 is installed on the front side of the sliding seat 6. Three-jaw chucks 2 for clamping and fixing the corrugated pipe are arranged on the sides of the mounting seat 7 and the base 1 corresponding to each other. A height measuring component is arranged at the bottom of the base 1.

[0018] According to the length of the corrugated pipe, the driving unit 3 is used to drive the lead screw 4 to drive the sliding seat 6 to move, adjust the initial distance between the two three-jaw chucks 2, and then clamp and fix the flanges at both ends of the corrugated pipe by using the three-jaw chucks 2. The corrugated pipe is compressed and stretched by repeatedly rotating the lead screw 4 to test the fatigue strength of the corrugated pipe. At the same time, the corrugated pipe can also be stretched and compressed. The infrared transmitter 12 is used to observe the reading strip 16 in the observation port 15 at both ends of the corrugated pipe, and cooperate with the scale rod 13 to measure whether the maximum stretching length and compression length of the corrugated pipe meet the production requirements. It has multiple uses and wide applicability.

[0019] In this embodiment, the lifting structure includes a driving unit 3 installed on the base 1. The output end of the driving unit 3 is connected with a lead screw 4. The two ends of the lead screw 4 are respectively rotatably connected with the top seat 9 and the base 11. The lead screw 4 is threadedly connected with the sliding seat 6. The sliding seat 6 is slidably connected with a slide rail 5. The slide rail 5 is fixed on the vertical plate 8 and is used to realize reciprocating movement.

[0020] In this embodiment, the height measurement component includes a scale rod 13 arranged on the base 1. Two sliding sleeves 14 are slidably connected to the scale rod 13. An infrared transmitter 12 is arranged on one side of the sliding sleeve 14 close to the three-jaw chuck 2. An observation port 15 is arranged on the front side of the sliding sleeve 14. A reading strip 16 is arranged on the inner wall of the observation port 15. The reading strip 16 and the infrared transmitter 12 are in the same horizontal plane and are used to measure the length of the corrugated pipe in any state.

[0021] In this embodiment, the sliding sleeve 14 and the scale rod 13 are in interference fit, which can realize self-positioning, will not slide randomly, and is convenient for reading and observation.

[0022] In this embodiment, the upper end of the lead screw 4 penetrates through the top seat 9 and is connected to the input end of the encoder 10. The encoder 10 is fixed on the top seat 9 and is used to measure the number of rotations of the lead screw 4, and cooperate with the pitch of the lead screw 4 to measure the stretching length.

[0023] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A bellows testing device, comprising a base (1) and a vertical plate (8) vertically arranged on the top of the base, wherein a top seat (9) and a base (11) are respectively installed on the front side of the vertical plate (8), wherein: A lifting structure is provided between the top seat (9) and the base (11), and the lifting structure drives the slide seat (6) to move up and down. A mounting seat (7) is installed on the front side of the slide seat (6), and a three-jaw chuck (2) for clamping and fixing the corrugated pipe is provided on one side of the mounting seat (7) corresponding to the base (1), and a height measuring component is provided at the bottom of the base (1).

2. A bellows testing device according to claim 1, characterized in that: The lifting structure comprises a driving unit (3) mounted on a base (1); an output end of the driving unit (3) is connected to a screw rod (4); two ends of the screw rod (4) are rotatably connected to a top seat (9) and a base (11) respectively; the screw rod (4) is threadedly connected to a slide seat (6); the slide seat (6) is slidably connected to a slide rail (5); and the slide rail (5) is fixed to a vertical plate (8).

3. A bellows testing device according to claim 2, characterized in that: The height measuring assembly comprises a ruler rod (13) arranged on a base (1), two sliding sleeves (14) being slidably connected to the ruler rod (13), an infrared transmitter (12) being arranged on a side of the sliding sleeve (14) close to the three-jaw chuck (2), an observation port (15) being arranged on the front side of the sliding sleeve (14), a reading bar (16) being arranged on the inner wall of the observation port (15), and the reading bar (16) and the infrared transmitter (12) being on the same horizontal plane.

4. A bellows testing device according to claim 3, characterized in that: The sliding sleeve (14) and the ruler rod (13) are interference fit.

5. A bellows testing device according to claim 4, characterized in that: The upper end of the screw rod (4) passes through the top seat (9) and is connected to the input end of the encoder (10), and the encoder (10) is fixed on the top seat (9).

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