Corrugated pipe U-shaped bending test device

Abstract

The utility model discloses a corrugated pipe U-shaped bending test device which comprises a box body, a first transmission device, a first sliding block, a second sliding block, a three-way connector, a pipe to be tested, a first connecting pipe and an electromagnetic valve, the first transmission device is arranged on the inner bottom face of the box body, the three-way connector is arranged on the inner side of the box body, and the first sliding block moves through the first transmission device. One end of the to-be-tested pipe is connected with the three-way connector, the other end of the to-be-tested pipe is connected with the second sliding block, the to-be-tested pipe is in a U-shaped bent state, one end of the first connecting pipe is connected with the end, located on the second sliding block, of the to-be-tested pipe, and an inlet of the electromagnetic valve is connected with the three-way connector through the second connecting pipe; the first sliding block can drive the second sliding block to horizontally move in a reciprocating mode so that the to-be-tested pipe can be bent in a reciprocating mode. One end of the to-be-tested pipe is connected with the three-way connector, the other end of the to-be-tested pipe is connected with the second sliding block, the first transmission device drives the second transmission device to move horizontally, reciprocating bending of the to-be-tested pipe can be achieved, the bending state in actual use can be simulated, and the accuracy of test results is improved.

Description

Technical Field

[0001] This utility model relates to testing instruments, and more specifically, to a corrugated pipe U-shaped bending test device. Background Technology

[0002] Corrugated pipes mainly include metal corrugated pipes and metal flexible pipes, which can carry gas or liquid. When in use, corrugated pipes usually exhibit a U-shaped bend. Therefore, after the corrugated pipes are manufactured, their U-shaped bending performance needs to be tested. Most existing bending test devices use moving jaws connected to the middle section of the corrugated pipe. The corrugated pipe is bent repeatedly by the reciprocating movement of the jaws. When using this method, the jaws can interfere with the accuracy of the test results, so there is an urgent need to improve it. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a corrugated pipe U-shaped bending test device. One end of the pipe to be tested is connected to a tee connector, and the other end is connected to a second slider. The second transmission device is driven to move horizontally by a first transmission device, which can realize the reciprocating bending of the pipe to be tested, simulate the bending state during actual use, and improve the accuracy of the test results.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: a corrugated pipe U-shaped bending test device, comprising a housing, a first transmission device, a first slider, a second slider, a tee connector, a test tube, a first connecting pipe, and a solenoid valve. The first transmission device is disposed on the bottom surface inside the housing, and the tee connector is disposed inside the housing. The first slider moves through the first transmission device to move it closer to or further away from the housing and to the side of the tee connector. One end of the test tube is connected to the tee connector and the other end is connected to the second slider. The test tube is in a U-shaped bending state. One end of the first connecting pipe is connected to the end of the test tube located on the second slider. The inlet of the solenoid valve is connected to the tee connector through the second connecting pipe. The first slider can drive the second slider to move horizontally back and forth, so that the test tube bends back and forth.

[0005] Furthermore, the tee connector includes a first connector, a second connector, and a third connector. The first connector is connected to one end of the tube to be tested, the second connector is connected to the second connecting tube, and a pressure gauge is connected to the third connector.

[0006] Furthermore, the first transmission device includes a housing, a lead screw, and a motor. A guide groove is provided on one side of the housing, and the motor can drive the lead screw to rotate. Connecting parts and guide ribs are respectively provided on both sides of the first slider. The connecting parts are threadedly connected to the lead screw from one side of the housing, and the guide ribs are inserted into the guide groove from the other side of the housing.

[0007] Furthermore, a second transmission device is connected to the upper part of the first slider, and the second transmission device can drive the second slider to move up and down.

[0008] Furthermore, an adjusting seat is fixed on one side of the box body at the T-joint, and a limiting frame is connected to the side of the adjusting seat. The limiting frame is located below the T-joint, and the side of the tube to be tested can abut against the surface of the limiting frame.

[0009] Furthermore, the surface of the adjusting seat is provided with multiple threaded holes distributed vertically, and the limiting bracket is connected to the threaded holes by bolts.

[0010] Furthermore, the side of the limiting frame that contacts the tube under test is located directly below the connection end between the tube under test and the tee connector, and the side of the limiting frame that contacts the tube under test is a concave arc shape.

[0011] Furthermore, the second slider includes a support plate and a mounting plate. The support plate is used to connect the tube to be tested and the first connecting tube. A first lighting lamp is mounted on the mounting plate, with the first lighting lamp facing the end of the tube to be tested located at the support plate. A second lighting lamp is provided at the lower part of the tee connector, with the second lighting lamp facing the end of the tube to be tested located at the tee connector.

[0012] In summary, this utility model has the following beneficial effects:

[0013] During the test, the two ends of the tube to be tested are connected to the tee connector and the first connecting pipe, respectively. The first transmission device drives the first slider to move back and forth, which can change the U-shaped bending shape of the tube to be tested, thereby making the tube to bend back and forth, making the tube to be tested closer to the state of daily use, and improving the accuracy of the test results. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of this embodiment from a first-view perspective;

[0015] Figure 2 This is a structural schematic diagram of this embodiment from a second perspective;

[0016] Figure 3 for Figure 2 Enlarged view at point A;

[0017] Figure 4 This is a partial schematic diagram of this embodiment;

[0018] Figure 5 This is a partial cross-sectional view of this embodiment.

[0019] Reference numerals: 1. Housing; 2. First transmission device; 201. Shell; 202. Lead screw; 203. Motor; 204. Guide groove; 3. First slider; 301. Connecting part; 302. Guide rib; 4. Second transmission device; 5. Second slider; 501. Support plate; 502. Mounting plate; 6. T-connector; 601. First connector; 602. Second connector; 603. Third connector; 7. Test tube; 8. First connecting pipe; 9. Solenoid valve; 10. Second connecting pipe; 11. Pressure gauge; 12. Adjusting seat; 13. Limiting frame; 14. First lighting lamp; 15. Second lighting lamp. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figures 1 to 4 As shown, this embodiment discloses a corrugated pipe U-shaped bending test device, including a housing 1, a first transmission device 2, a first slider 3, a second slider 5, a tee connector 6, a test tube 7, a first connecting pipe 8, and a solenoid valve 9. The first transmission device 2 is disposed on the bottom surface inside the housing 1, and the tee connector 6 is disposed inside the housing 1. The first slider 3 moves through the first transmission device 2 to move closer to or further away from the housing 1 to the side of the tee connector 6. One end of the test tube 7 is connected to the tee connector 6, and the other end is connected to the second slider 5. The test tube 7 is in a U-shaped bent state. One end of the first connecting pipe 8 is connected to the end of the test tube 7 located on the second slider 5. The other end is connected to an external water or gas supply device (not shown in the figure). The inlet of the solenoid valve 9 is connected to the three-way connector 6 through the second connecting pipe 10. The outlet of the solenoid valve 9 is located outside the housing 1. The solenoid valve 9 is a conventional regulating valve. The three-way connector 6 includes a first connector 601, a second connector 602, and a third connector 603. The first connector 601 is connected to one end of the tube to be tested 7. The second connector 602 is connected to the second connecting pipe 10. A pressure gauge 11 is connected to the third connector 603. The pressure gauge 11 can measure the pressure of the gas or liquid in the tube to be tested 7. According to different test requirements, the corresponding model of pressure gauge 11 and the external device connected to the first connecting pipe 8 can be selected.

[0022] The first slider 3 can drive the second slider 5 to move horizontally back and forth, so that the tube under test 7 bends back and forth. When the test is carried out, the two ends of the tube under test 7 are connected to the three-way connector 6 and the first connecting pipe 8 respectively. The solenoid valve 9 is closed, and gas is introduced into the tube under test 7 through the first connecting pipe 8. The first slider 3 drives the second slider 5 to move horizontally back and forth. By observing the value of the pressure gauge 11, it is determined whether there is air leakage in the tube under test 7 during the U-bending test, so as to determine whether the tube under test 7 is qualified. The first transmission device 2 drives the first slider 3 to move back and forth, which can change the U-bending shape of the tube under test 7, so that the tube under test 7 bends back and forth, making the tube under test 7 closer to the daily use state and improving the accuracy of the test results.

[0023] The first transmission device 2 is a screw drive device, which includes a housing 201, a screw 202, and a motor 203. A guide groove 204 is provided on one side of the housing 201. The motor 203 can drive the screw 202 to rotate. The first slider 3 is provided with a connecting part 301 and a guide rib 302 on both sides respectively. The connecting part 301 is threadedly connected to the screw 202 from one side of the housing 201. The guide rib 302 is inserted into the guide groove 204 from the other side of the housing 201. A second transmission device 4 is connected to the upper part of the first slider 3. The second transmission device 4 is also a screw drive device. The connection method between the second slider 5 and the second transmission device 4 is the same as the connection method between the first slider 3 and the first transmission device 2. The second transmission device 4 can drive the second slider 5 to move up and down. By moving the second slider 5 up and down, not only can the U-shaped bending test in the vertical direction of the tube 7 under test be realized, which is beneficial to improving the accuracy of the test structure, but also bending tests can be performed on tubes 7 of different lengths, which is practical.

[0024] An adjusting seat 12 is fixed to one side of the housing 1 at the tee connector 6. A limiting frame 13 is connected to the side of the adjusting seat 12. The limiting frame 13 is located below the tee connector 6. The side of the tube to be tested 7 can abut against the surface of the limiting frame 13. Specifically, the surface of the adjusting seat 12 is provided with multiple threaded holes distributed vertically. The limiting frame 13 is connected to the threaded holes by bolts. The side of the limiting frame 13 that contacts the tube to be tested 7 is located directly below the connection end between the tube to be tested 7 and the tee connector 6. The side of the limiting frame 13 that contacts the tube to be tested 7 is a concave arc shape. By setting the limiting frame 13, the tube to be tested 7 can be limited. During the U-bending test, the force on the tube to be tested 7 at the tee connector 6 is reduced, and the U-bending of the tube to be tested 7 in the section between the tee connector 6 and the limiting frame 13 can be avoided, making the test results more reliable.

[0025] The second slider 5 includes a support plate 501 and a mounting plate 502. The support plate 501 is used to connect the tube to be tested 7 and the first connecting pipe 8. A first lighting lamp 14 is installed on the mounting plate 502, with the first lighting lamp 14 facing the end of the tube to be tested 7 located at the support plate 501. A second lighting lamp 15 is provided at the lower part of the tee connector 6, with the second lighting lamp 15 facing the end of the tube to be tested 7 located at the tee connector 6. When liquid flows through the tube to be tested 7, the first lighting lamp 14 and the second lighting lamp 15 make it easy for the operator to observe whether there is liquid leakage at the joints at both ends of the tube to be tested 7, which facilitates the experimental operation.

[0026] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A bellows U-shaped bending test device, characterized in that, The device includes a housing (1), a first transmission device (2), a first slider (3), a second slider (5), a three-way connector (6), a tube to be tested (7), a first connecting pipe (8), and a solenoid valve (9). The first transmission device (2) is located on the bottom surface inside the housing (1). The three-way connector (6) is located inside the housing (1). The first slider (3) moves through the first transmission device (2) so that the first slider (3) is close to or away from the housing (1) and located on one side of the three-way connector (6). One end of the tube to be tested (7) is connected to the three-way connector (6), and the other end is connected to the second slider (5). The tube to be tested (7) is in a U-shaped bend. One end of the first connecting pipe (8) is connected to the end of the tube to be tested (7) located on the second slider (5). The inlet of the solenoid valve (9) is connected to the three-way connector (6) through the second connecting pipe (10). The first slider (3) can drive the second slider (5) to move horizontally back and forth so that the tube to be tested (7) bends back and forth.

2. The bellows U-shaped bending test device according to claim 1, characterized in that, The three-way connector (6) includes a first connector (601), a second connector (602) and a third connector (603). The first connector (601) is connected to one end of the tube to be tested (7), the second connector (602) is connected to the second connecting tube (10), and a pressure gauge (11) is connected to the third connector (603).

3. The bellows U-shaped bending test device according to claim 1, characterized in that, The first transmission device (2) includes a housing (201), a lead screw (202) and a motor (203). The housing (201) has a guide groove (204) on one side. The motor (203) can drive the lead screw (202) to rotate. The first slider (3) has a connecting part (301) and a guide rib (302) on both sides respectively. The connecting part (301) is threaded to the lead screw (202) from one side of the housing (201). The guide rib (302) is inserted into the guide groove (204) from the other side of the housing (201).

4. The corrugated pipe U-shaped bending test device according to claim 3, characterized in that, The upper part of the first slider (3) is connected to a second transmission device (4), which can drive the second slider (5) to move up and down.

5. The bellows U-shaped bending test device according to claim 1, characterized in that, The housing (1) is fixed with an adjustment seat (12) on one side of the tee connector (6). The adjustment seat (12) is connected to a limit frame (13) on its side. The limit frame (13) is located below the tee connector (6). The side of the tube to be tested (7) can abut against the surface of the limit frame (13).

6. The corrugated pipe U-shaped bending test device according to claim 5, characterized in that, The surface of the adjusting seat (12) is provided with a plurality of threaded holes distributed vertically, and the limiting frame (13) is connected to the threaded holes by bolts.

7. The corrugated pipe U-shaped bending test device according to claim 5, characterized in that, The side of the limiting frame (13) that contacts the tube to be tested (7) is located directly below the connection end between the tube to be tested (7) and the tee connector (6). The side of the limiting frame (13) that contacts the tube to be tested (7) is a concave arc shape.

8. The bellows U-shaped bending test device according to claim 1, characterized in that, The second slider (5) includes a support plate (501) and a mounting plate (502). The support plate (501) is used to connect the tube to be tested (7) and the first connecting pipe (8). A first lighting lamp (14) is installed on the mounting plate (502). The first lighting lamp (14) faces the end of the tube to be tested (7) located on the support plate (501). A second lighting lamp (15) is provided at the lower part of the tee connector (6). The second lighting lamp (15) faces the end of the tube to be tested (7) located on the tee connector (6).

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