Bending pressure testing machine suitable for multi-aperture cement pipeline

Abstract

The utility model relates to a testing machine, in particular to a bending and pressing testing machine suitable for a multi-aperture cement pipeline. The cement pipeline bending pressure testing machine solves the problem that an existing cement pipeline bending pressure testing machine can only test a cement pipeline with a single diameter and cannot carry out in-situ calibration, and can carry out in-situ calibration. The system comprises a host frame; the main machine frame is composed of a base, a fixed upper cross beam and two stand columns. A fixed upper cross beam is arranged between the two stand columns. A horizontally-arranged movable beam is connected below the fixed upper beam through a first steel wire rope, a hydraulic jack is installed at the bottom of the movable beam, and a force sensor is installed at the end of a piston rod of the hydraulic jack. A movable cross beam is arranged below the movable cross beam, the movable cross beam is connected with the movable cross beam through two second steel wire ropes, the positions of the second steel wire ropes are adjusted by adjusting the lengths of the second steel wire ropes through a second winch, and the movable cross beam is always located above the base; and a space for accommodating a tested cement pipeline is reserved between the movable cross beam and the movable cross beam.

Description

Technical Field

[0001] The utility model relates to a testing machine, in particular to a bending and compression testing machine suitable for cement pipes with multiple apertures. Background Art

[0002] The cement pipe bending and compression tester, also known as the reinforced concrete drainage pipe external pressure tester, is a special equipment used to test the physical properties of concrete and reinforced concrete pipes. It is mainly used to evaluate the compressive strength and stability of pipes when subjected to external pressure. This type of tester simulates the load conditions in the actual use environment by accurately applying external pressure to ensure that the pipe can operate safely and reliably under various conditions. Therefore, it is an important tool for implementing the national standards for drainage pipes, and it is also an indispensable device for pre-production and subsequent quality inspection of pipes.

[0003] Traditional cement pipe bending and compression testing machines are usually designed with fixed sizes, which means that their scope of application is limited to pipes of a specific diameter. Generally speaking, the size of the testing machine is determined by the diameter of the pipes produced by the pipe manufacturer. However, when the company needs to produce different types of pipes, the original testing machine is no longer applicable, and a new testing machine must be purchased or customized, which not only increases the company's costs, but may also cause disruptions to the production line. In addition, traditional testing machines are often not equipped with a dedicated external calibration space, making the calibration of force sensors complicated and inconvenient. In order to perform external calibration, the force sensor usually needs to be removed from the equipment. This process is not only time-consuming and labor-intensive, but also fails to fully achieve the purpose of overall calibration of the equipment, which brings many inconveniences to daily operations. Summary of the invention

[0004] The utility model aims at the defects of the prior art and provides a cement pipe bending and compression testing machine suitable for multiple apertures. It solves the problem that the prior cement pipe bending and compression testing machine can only test cement pipes of a single diameter and cannot perform in-situ calibration, and can perform in-situ calibration.

[0005] To achieve the above purpose, the utility model adopts the following technical solution, which includes a main frame; the main frame is composed of a base, a fixed upper crossbeam and two columns; a fixed upper crossbeam is arranged between the two columns and above the base.

[0006] A horizontally arranged movable crossbeam is connected below the fixed upper crossbeam through a first steel wire rope, and its position is adjusted by adjusting the length of the steel wire rope through a first winch.

[0007] A hydraulic jack is installed at the bottom of the movable crossbeam, and a force sensor is installed at the end of the piston rod of the hydraulic jack;

[0008] A movable beam is arranged below the movable beam, which is connected to the movable beam through two second steel ropes, and its position is adjusted by adjusting the length of the second steel ropes through a second winch, and the movable beam is always located above the base; a space is reserved between the movable beam and the movable beam for accommodating the cement pipe to be tested.

[0009] Furthermore, the columns are made of I-beams.

[0010] Furthermore, the upper surface of the base is provided with a V-shaped groove for placing the cement pipe to be tested.

[0011] Furthermore, the bottom of each column is fixedly connected to the base, and the top of each column is connected to a fixed upper crossbeam.

[0012] Furthermore, the hydraulic jack is connected to a hydraulic oil pump, and its extension and retraction is controlled by the hydraulic oil pump.

[0013] Furthermore, a V-shaped groove for placing the cement pipe to be tested is arranged on the bottom lower surface of the movable crossbeam, and a pressure pad is arranged on the bottom upper surface of the movable crossbeam.

[0014] Furthermore, the columns are provided with holes in the longitudinal direction, the movable crossbeams are provided with through holes at both ends, the movable crossbeams are connected to the corresponding columns through pins, and the number of holes on each column is at least 4.

[0015] Furthermore, the pin passes through the through hole and the hole corresponding to its position to complete the connection and fixation between the movable beam and the column.

[0016] Furthermore, the testing machine also includes a space for calibration, which is located between the force sensor and the pressure pad, and the size of the space can be adjusted by adjusting the second steel wire rope.

[0017] Furthermore, three hydraulic jacks are arranged on the movable beam, and force sensors are installed at the ends of the piston rods of the three hydraulic jacks, and the bottom of each force sensor corresponds to a pressure pad arranged on the movable beam; when the force sensor needs to be calibrated, the standard force sensor is placed on the pressure pad corresponding to the force sensor to be measured.

[0018] Compared with the prior art, the utility model has beneficial effects.

[0019] The utility model solves the problem that the existing cement pipe bending and compression testing machine can only test cement pipes of a single diameter and cannot perform in-situ calibration, and provides a cement pipe bending and compression testing machine suitable for multiple calibers, which can perform in-situ calibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods. The protection scope of the utility model is not limited to the following descriptions.

[0021] Figure 1 The embodiment is a schematic diagram of the overall structure of a cement pipe bending and compression testing machine suitable for multiple apertures.

[0022] Figure 2 yes Figure 1 A local enlarged schematic diagram of the .

[0023] Figure 3 It is a side view of the cement pipe bending and compression testing machine according to the embodiment. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and beneficial effects of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all of the embodiments.

[0025] like Figure 1-3 As shown, the specific embodiment includes a main frame; the main frame is composed of a base 6, a fixed upper crossbeam 7 and two columns 1; a fixed upper crossbeam 7 is arranged between the two columns and above the base 6.

[0026] A horizontally arranged movable crossbeam 9 is connected to the lower part of the fixed upper crossbeam 7 through a first steel wire rope 8, and its position is adjusted by adjusting the length of the steel wire rope 11 by a first winch.

[0027] A hydraulic jack 3 is installed at the bottom of the movable cross beam 9 , and a force sensor 10 is installed at the end of the piston rod of the hydraulic jack 3 .

[0028] A movable crossbeam 12 is arranged below the movable crossbeam 9. The movable crossbeam 12 is connected to the movable crossbeam 9 through two second steel wire ropes 11. The length of the second steel wire rope 11 is adjusted by the second winch to adjust its position. The movable crossbeam 12 is always located above the base 6. A space for accommodating the cement pipe to be tested is reserved between the movable crossbeam 12 and the movable crossbeam 9. Specifically, the first winch is installed on the fixed upper crossbeam 7, and the first winch is connected to the first steel wire rope 8, and the first steel wire rope 8 is connected to the movable crossbeam 9. The second winch is fixed to the bottom of the movable crossbeam 9, and the second winch is connected to the second steel wire rope 11, and the movable crossbeam 12 is connected through the second steel wire rope 11.

[0029] Three hydraulic jacks 3 are arranged on the movable cross beam 9, and force sensors 10 are installed at the ends of the piston rods of the three hydraulic jacks 3, and the lower part of each force sensor 10 corresponds to a pressure pad 4 arranged on the movable cross beam. When the force sensor 10 needs to be calibrated, the standard force sensor 15 is placed on the pressure pad 4 corresponding to the force sensor 10 to be measured.

[0030] Preferably, the column 1 is made of I-beam.

[0031] Preferably, the upper surface of the base 6 is provided with a V-shaped groove for placing the cement pipe 5 to be tested.

[0032] Preferably, the bottom of each column 1 is fixedly connected to the base 6 , and the top of each column 1 is connected to a fixed upper crossbeam 7 .

[0033] Preferably, the hydraulic jack 3 is connected to a hydraulic oil pump, and its extension and retraction are controlled by the hydraulic oil pump.

[0034] Preferably, a V-shaped groove for placing the cement pipe 5 to be tested is provided on the bottom lower surface of the moving crossbeam 12 , and a pressure pad 4 is provided on the bottom upper surface of the moving crossbeam 12 .

[0035] Preferably, the column 1 is provided with holes 2 in the longitudinal direction, the movable crossbeam 9 is provided with through holes at both ends, and the movable crossbeam 9 is connected to the corresponding column through a pin 14. And the number of holes on each column is at least 4.

[0036] Preferably, the pin shaft 14 passes through the through hole and the hole 2 corresponding to its position to complete the connection and fixation between the movable crossbeam 9 and the column 1 .

[0037] Preferably, the testing machine further comprises a space 13 for calibration, wherein the space 13 is located between the force sensor 10 and the pressure pad 4 , and the size of the space 13 can be adjusted by adjusting the second steel wire rope 11 .

[0038] Combined with the accompanying drawings and technical solutions, the use process and working principle of the utility model are explained:

[0039] 1. Place the cement pipe 5 to be tested on the V-groove of the base 6, and make it equidistant from the columns 1 on both sides.

[0040] 2. Adjust the length of the second steel wire rope 11 so that the distance between the moving beam 12 and the force sensor 10 is slightly larger than the distance between adjacent holes 2 on the column 1 .

[0041] 3. Adjust the first steel wire rope 8 so that the V-shaped groove of the movable beam 12 contacts the cement pipe 5 to be measured; further adjust the first steel wire rope 8 so that the hole of the movable beam 9 coincides with the hole 2 of the column 1, and insert the pin 14 to fix it.

[0042] 4. Adjust the hydraulic oil pump to extend the hydraulic jack 3 with the power sensor 10 and make it contact with the pressure pad 4, apply force to the cement pipe 5 to be tested, and read the data on the corresponding display instrument.

[0043] 5. Retract the hydraulic jack 3 and complete the test.

[0044] 6. Use three hydraulic jacks 3 individually or in combination to complete the test.

[0045] 7. When calibrating the cement pipe bending and compression testing machine, adjust the second steel wire rope 11 through the winch to make the moving beam 12 contact with the base 6.

[0046] 8. Adjust the wire rope 8 through the winch so that the hole of the movable beam 9 coincides with the hole 2 of the column, and keep the distance between the force sensor 10 and the pressure pad 4 slightly higher than the height of the standard force sensor 15.

[0047] 9. Place the standard force sensor 15 on the pressure pad 4 so that the force sensor 10 and the standard force sensor 15 are on the same axis; adjust the display instrument of the standard force sensor 15 and the display instrument of the bending and compression testing machine to zero at the same time, adjust the hydraulic oil pump, control the corresponding hydraulic jack to extend, so that the force sensor 10 is pressed onto the standard force sensor 15. According to the corresponding technical specifications, when the corresponding values ​​are adjusted to the corresponding values, compare the values ​​of the bending and compression testing machine and the values ​​of the standard force sensor. When they meet the corresponding requirements, repeat this process 3 times.

[0048] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some or all of the technical features thereof may be replaced by equivalents. Therefore, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope defined by the claims of the present invention.

Claims

1. A cement pipe bending and compression testing machine suitable for multiple apertures, comprising a main frame; characterized in that: The main frame is composed of a base (6), a fixed upper crossbeam (7) and two columns (1); a fixed upper crossbeam (7) is arranged between the two columns and above the base (6); A horizontally arranged movable crossbeam (9) is connected below the fixed upper crossbeam (7) via a first steel wire rope (8), and its position is adjusted by adjusting the length of the steel wire rope via a first winch; A hydraulic jack (3) is installed at the bottom of the movable crossbeam (9), and a force sensor (10) is installed at the end of the piston rod of the hydraulic jack (3); A movable crossbeam (12) is arranged below the movable crossbeam (9), the movable crossbeam (12) is connected to the movable crossbeam (9) via two second steel wire ropes (11), and its position is adjusted by adjusting the length of the second steel wire ropes (11) via a second winch, and the movable crossbeam (12) is always located above the base (6); a space for accommodating the cement pipe to be tested is reserved between the movable crossbeam (12) and the movable crossbeam (9).

2. The cement pipe bending and compression testing machine according to claim 1, characterized in that: The upright column (1) is made of I-beam.

3. The cement pipe bending and compression testing machine according to claim 1, characterized in that: The upper surface of the base (6) is provided with a V-shaped groove for placing the cement pipe (5) to be tested.

4. The cement pipe bending and compression testing machine according to claim 1, characterized in that: The bottom of each column (1) is fixedly connected to the base (6), and the top of each column (1) is connected to a fixed upper crossbeam (7).

5. The cement pipe bending and compression testing machine according to claim 1, characterized in that: The hydraulic jack (3) is connected to a hydraulic oil pump, and its extension and contraction is controlled by the hydraulic oil pump.

6. The cement pipe bending and compression testing machine according to claim 1, characterized in that: The bottom lower surface of the moving cross beam (12) is provided with a V-shaped groove for placing the cement pipe (5) to be tested, and the bottom upper surface of the moving cross beam (12) is provided with a pressure pad (4).

7. The cement pipe bending and compression testing machine according to claim 1, characterized in that: The upright column (1) is provided with holes (2) along the longitudinal direction, and the movable cross beam (9) is provided with through holes at both ends. The movable cross beam (9) is connected to the corresponding upright column via a pin shaft (14); and the number of holes on each upright column is at least 4.

8. The cement pipe bending and compression testing machine according to claim 7, characterized in that: The pin shaft (14) passes through the through hole and the hole (2) corresponding to its position, thereby completing the connection and fixation between the movable crossbeam (9) and the column (1).

9. The cement pipe bending and compression testing machine according to claim 1, characterized in that: The testing machine also includes a space (13) for calibration, the space (13) being located between the force sensor (10) and the pressure pad (4), and the size of the space (13) can be adjusted by adjusting the second steel wire rope (11).

10. The cement pipe bending and compression testing machine according to claim 1, characterized in that: Three hydraulic jacks (3) are arranged on the movable crossbeam (9), and force sensors (10) are installed at the ends of the piston rods of the three hydraulic jacks (3), and the bottom of each force sensor (10) corresponds to a pressure pad (4) arranged on the movable crossbeam (12); when the force sensor (10) needs to be calibrated, a standard force sensor (15) is placed on the pressure pad (4) corresponding to the force sensor (10) to be measured.

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