Pressure testing machine for steel strip reinforced polyethylene spiral corrugated pipe

Abstract

The utility model discloses a steel belt reinforced polyethylene spiral corrugated pipe pressure testing machine which comprises an installation frame, the bottom of the installation frame is fixed on the surface of a testing box in a screw joint mode, the top of the installation frame is fixedly connected with a hydraulic cylinder in a screw joint mode, a piston rod of the hydraulic cylinder is fixedly connected with a driving rod, and a pressing plate is fixedly welded to the bottom of the driving rod. A pressing seat is mounted below the pressing plate and is arranged right above the corrugated pipe body; a positioning seat is fixedly installed in the test box. According to the pressure testing machine for the steel strip reinforced polyethylene spiral corrugated pipe, the surface of the corrugated pipe body is pressed downwards by the pressing seat, the deformation state of the corrugated pipe body when the corrugated pipe body is pressed is simulated, and pressure testing work on the corrugated pipe body is achieved; the corrugated pipe body is clamped and fixed by reducing the distance between the two groups of clamping plates, so that the corrugated pipe body is prevented from displacing when being stressed, and the stability of the corrugated pipe body in a stress test and the reliability of a test result are ensured.

Description

Technical Field

[0001] The utility model relates to the field of pressure testing machines, in particular to a steel belt reinforced polyethylene spiral corrugated pipe pressure testing machine. Background Art

[0002] The pressure testing machine for steel reinforced polyethylene spiral corrugated pipe usually includes the following parts:

[0003] Mechanical structure part: fix the bellows on the test station through a clamp;

[0004] Pressure application system: Use hydraulic pressure or air pressure to generate pressure, and gradually increase the pressure on the bellows;

[0005] Measurement and control system: equipped with pressure sensors and other measuring devices to monitor the pressure value applied to the bellows in real time; at the same time, the control system controls the pressure application process according to the set parameters, such as pressure increase rate, pressure holding time, etc.;

[0006] During the test, as the pressure gradually increases, observe the deformation of the bellows and whether there is any rupture or leakage. Through a comprehensive analysis of the pressure value and the state of the bellows, evaluate whether the pressure resistance and quality of the bellows meet the standard requirements.

[0007] When the bellows is subjected to pressure testing, it is easy for the bellows to move, resulting in changes in the force position of the bellows, and the stability of the bellows during the force test and the reliability of the pressure test results cannot be guaranteed. Utility Model Content

[0008] The utility model aims to provide a steel-belt reinforced polyethylene spiral corrugated pipe pressure testing machine to solve the defects mentioned in the above background technology.

[0009] To achieve the above purpose, a steel-reinforced polyethylene spiral corrugated pipe pressure testing machine is provided, comprising a mounting frame, the bottom of the mounting frame is screwed and fixed to the surface of the test box, and the top of the mounting frame is screwed and fixed to the hydraulic cylinder, while the piston rod of the hydraulic cylinder is fixedly connected to the driving rod, and the bottom of the driving rod is welded and fixed with a pressing plate, a pressing seat is installed below the pressing plate, and the pressing seat is arranged just above the corrugated pipe body;

[0010] A positioning seat is fixedly installed inside the test box, and a corrugated tube body is placed on the surface of the positioning seat. At the same time, clamps are arranged on both sides of the corrugated tube body, and a driving arm is welded and fixed at the bottom of the clamp. A screw is screwed inside a screw hole opened at the bottom of the driving arm, and a clamping wheel is fixedly installed at the end of the screw.

[0011] Preferably, a guide rod is fixedly mounted on the inner wall surface of the mounting frame, and guide plates are mounted on both sides of the driving rod, and the guide rod is inserted into a guide hole formed at the end of the guide plate.

[0012] Preferably, four groups of limit rods are evenly installed on the surface of the pressure seat, and the limit rods pass through the pressure plate and the limit sheet for fixation, and springs are installed on the outer sides of the four groups of limit rods.

[0013] Preferably, a circular fixing platform is fixedly arranged on the surface of the pressure seat, and a pressure sensor is installed on the surface of the fixing platform, and the pressure sensor is arranged directly below the pressure plate.

[0014] Preferably, a rubber sheet is bonded and fixed to the front side of the clamping plate, and a limiting column is inserted through the lower part of the driving arm at the bottom of the clamping plate, and the limiting column is fixedly installed inside the positioning seat.

[0015] Preferably, the bellows body is placed inside an arc-shaped groove opened on the surface of the positioning seat, and the bellows body is clamped and fixed on the surface of the positioning seat by two sets of clamping plates.

[0016] Compared with the prior art, the beneficial effects of the utility model are: the pressure seat presses down on the surface of the bellows body, simulating the deformation state of the bellows body when under pressure, thereby realizing pressure testing of the bellows body; by reducing the distance between the two sets of clamps, the clamping and fixing of the bellows body is completed, avoiding displacement of the bellows body when subjected to force, thereby ensuring the stability of the bellows body during the force test and the reliability of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the front view of the structure of the utility model;

[0018] Figure 2 The utility model structure Figure 1 Schematic diagram of pressure testing of bellows body;

[0019] Figure 3 The utility model structure Figure 2 Side view of

[0020] Figure 4 This is a schematic diagram of the structural pressure seat and its connection structure of the utility model;

[0021] Figure 5 The utility model structure Figure 4 Bottom view of .

[0022] Numbers in the figure: 1. Hydraulic cylinder; 2. Mounting frame; 3. Guide plate; 4. Driving rod; 5. Guide rod; 6. Pressure sensor; 7. Pressure plate; 8. Limit rod; 9. Spring; 10. Fixed table; 11. Pressure seat; 12. Test box; 13. Bellows body; 14. Clamp; 15. Driving arm; 16. Positioning seat; 17. Clamping wheel; 18. Screw; 19. Limit column. DETAILED DESCRIPTION

[0023] See also Figure 1-5 The utility model provides a steel-reinforced polyethylene spiral corrugated pipe pressure testing machine, comprising a mounting frame 2, the bottom of the mounting frame 2 is screwed and fixed on the surface of a test box 12, and the top of the mounting frame 2 is screwed and fixed to a hydraulic cylinder 1, while the piston rod of the hydraulic cylinder 1 is fixedly connected to a driving rod 4, and a pressing plate 7 is welded and fixed to the bottom of the driving rod 4, a pressing seat 11 is installed below the pressing plate 7, and the pressing seat 11 is arranged just above the corrugated pipe body 13;

[0024] A positioning seat 16 is fixedly installed inside the test box 12, and a bellows body 13 is placed on the surface of the positioning seat 16. At the same time, clamps 14 are arranged on both sides of the bellows body 13, and a driving arm 15 is welded and fixed at the bottom of the clamp 14. A screw 18 is screwed inside a screw hole opened at the bottom of the driving arm 15, and a clamping wheel 17 is fixedly installed at the end of the screw 18.

[0025] Working principle: When in use, first place the bellows body 13 inside the positioning seat 16 and clamp it through two sets of positioning seats 16. At this time, start the external switch of the hydraulic cylinder 1, and the output shaft of the hydraulic cylinder 1 drives the drive rod 4 to move downward. The drive rod 4 drives the pressure seat 11 to move downward through the pressure plate 7 at the bottom. The pressure seat 11 presses down on the surface of the bellows body 13 to simulate the deformation state of the bellows body 13 when under pressure, thereby realizing the pressure test of the bellows body 13.

[0026] As a preferred embodiment, the guide rod 5 is fixedly mounted on the inner wall surface of the mounting frame 2, and the guide plates 3 are mounted on both sides of the driving rod 4, and the guide rod 5 is inserted into the guide hole opened at the end of the guide plate 3.

[0027] Four groups of limiting rods 8 are evenly installed on the surface of the pressure seat 11 , and the limiting rods 8 pass through the pressure plate 7 and are fixed to the limiting sheets. At the same time, springs 9 are installed on the outer sides of the four groups of limiting rods 8 .

[0028] When the pressure seat 11 moves downward, the pressure plate 7 overcomes the elastic force of the four groups of pressure plates 7 and acts on the surface of the pressure sensor 6. The pressure value on the surface of the pressure sensor 6 can be displayed in real time on a display screen installed on the outside of the installation frame 2, so as to confirm the pressure on the surface of the bellows body 13.

[0029] As a preferred embodiment, a circular fixing platform 10 is fixedly arranged on the surface of the pressure seat 11 , and a pressure sensor 6 is installed on the surface of the fixing platform 10 . Meanwhile, the pressure sensor 6 is arranged directly below the pressure plate 7 .

[0030] A rubber sheet is bonded and fixed to the front side of the clamping plate 14 , and a limiting column 19 is inserted through the lower part of the driving arm 15 at the bottom of the clamping plate 14 , while the limiting column 19 is fixedly installed inside the positioning seat 16 .

[0031] As a preferred implementation, the bellows body 13 is placed inside an arc-shaped groove opened on the surface of the positioning seat 16 , and the bellows body 13 is clamped and fixed on the surface of the positioning seat 16 by two sets of clamping plates 14 .

[0032] The clamping wheel 17 is rotated so that the clamping wheel 17 drives the two sets of screw rods 18 to rotate synchronously. The driving arms 15 are installed at the bottom of the two sets of clamping plates 14. By reducing the distance between the two sets of clamping plates 14, the clamping and fixing work of the bellows body 13 is completed, avoiding the displacement of the bellows body 13 when subjected to force, thereby ensuring the stability of the bellows body 13 during the force test and the reliability of the test results.

Claims

1. A steel-reinforced polyethylene spiral corrugated pipe pressure testing machine, comprising a mounting frame (2), characterized in that: The bottom of the mounting frame (2) is screwed and fixed to the surface of the test box (12), and the top of the mounting frame (2) is screwed and fixed to the hydraulic cylinder (1), while the piston rod of the hydraulic cylinder (1) is fixedly connected to the drive rod (4), and the bottom of the drive rod (4) is welded and fixed to a pressure plate (7), a pressure seat (11) is installed below the pressure plate (7), and the pressure seat (11) is arranged directly above the bellows body (13); A positioning seat (16) is fixedly installed inside the test box (12), and a bellows body (13) is placed on the surface of the positioning seat (16). Clamps (14) are provided on both sides of the bellows body (13), and a driving arm (15) is welded and fixed at the bottom of the clamps (14). A screw rod (18) is screwed and installed inside a screw hole opened at the bottom of the driving arm (15), and a clamping wheel (17) is fixedly installed at the end of the screw rod (18).

2. A steel-reinforced polyethylene spiral corrugated pipe pressure testing machine according to claim 1, characterized in that: A guide rod (5) is fixedly mounted on the inner wall surface of the mounting frame (2), and guide plates (3) are mounted on both sides of the driving rod (4), and the guide rod (5) is inserted into a guide hole formed at the end of the guide plate (3).

3. The steel-reinforced polyethylene spiral corrugated pipe pressure testing machine according to claim 1, characterized in that: Four groups of limiting rods (8) are evenly mounted on the surface of the pressure seat (11), and the limiting rods (8) pass through the pressure plate (7) and are fixed to the limiting sheets. Meanwhile, springs (9) are mounted on the outer sides of the four groups of limiting rods (8).

4. The steel-reinforced polyethylene spiral corrugated pipe pressure testing machine according to claim 1, characterized in that: A circular fixing platform (10) is fixedly arranged on the surface of the pressure seat (11), and a pressure sensor (6) is installed on the surface of the fixing platform (10), while the pressure sensor (6) is arranged directly below the pressure plate (7).

5. The steel-reinforced polyethylene spiral corrugated pipe pressure testing machine according to claim 1, characterized in that: A rubber sheet is bonded and fixed to the front side of the clamping plate (14), and a limiting column (19) is inserted through the lower part of the driving arm (15) at the bottom of the clamping plate (14), while the limiting column (19) is fixedly mounted inside the positioning seat (16).

6. The steel-reinforced polyethylene spiral corrugated pipe pressure testing machine according to claim 1, characterized in that: The bellows body (13) is placed inside an arc-shaped groove formed on the surface of the positioning seat (16), and the bellows body (13) is clamped and fixed on the surface of the positioning seat (16) by two sets of clamping plates (14).

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