Electric melting pipe fitting adjustable resistance test tool

Abstract

The utility model discloses an electrofusion pipe fitting adjustable resistance testing tool, which comprises a mounting plate, an adjusting piece and a connecting piece connected with an electrode when the resistance of an electrofusion pipe fitting is tested, two waist-shaped holes are arranged on the mounting plate, the adjusting piece comprises a first screw rod, a nut and an internal thread joint, the first screw rod comprises a connecting section and a thread section matched with the nut, and the connecting section is connected with the nut. The internal thread connector is arranged at the end where the connecting section is located, the diameter of the connecting section is matched with the width of the kidney-shaped hole, the connecting section of the first screw penetrates through the kidney-shaped hole, and the nut is connected with the thread section. The connecting piece is a conductor and comprises a connecting rod and a connector arranged at one end of the connecting rod, and an external thread section matched with the internal thread connector is arranged at the end, away from the connector, of the connecting rod. According to the adjustable resistance testing tool for the electric smelting pipe fitting, the position of the connector can be conveniently adjusted to adapt to electric smelting pipe fittings of various specifications, and resistance testing is facilitated.

Description

Technical Field

[0001] The utility model relates to the field of testing of electrofusion pipe fittings, in particular to a test tooling for adjustable resistance of electrofusion pipe fittings. Background Art

[0002] An electrofusion pipe fitting refers to a plastic (polyethylene) pipe fitting that can be melted by the temperature generated by an electric current to achieve connection. To ensure the quality of the produced electrofusion pipe fittings, it is necessary to test the resistance of the electrofusion pipe fittings. The existing method is to connect the electrodes of the electrofusion pipe fitting to the connection head of the matching electrode and then connect to the test equipment. Generally, the connection head is fixed, and there is a lack of tooling in the prior art that can adjust the connection head for testing according to different specifications of electrofusion pipe fittings. Content of the Utility Model

[0003] In view of the above problems, the utility model provides a test tooling for adjustable resistance of electrofusion pipe fittings, which is convenient to adjust the position of the connection head to adapt to various specifications of electrofusion pipe fittings and is convenient for resistance testing.

[0004] The technical solution of the utility model is as follows:

[0005] A test tooling for adjustable resistance of electrofusion pipe fittings includes a mounting plate, an adjusting member, and a connecting member for connecting electrodes when testing the resistance of the electrofusion pipe fitting. Two waist-shaped holes are provided on the mounting plate. The adjusting member includes a first screw rod, a nut, and an internally threaded joint. The first screw rod includes a connecting section and a threaded section matching the nut. The internally threaded joint is provided at one end where the connecting section is located. The diameter of the connecting section is matched with the width of the waist-shaped hole. The connecting section of the first screw rod is passed through the waist-shaped hole, and the nut is connected to the threaded section. The connecting member is a conductor and includes a connecting rod and a connection head provided at one end of the connecting rod. An external threaded section matching the internally threaded joint is provided at the end of the connecting rod away from the connection head.

[0006] In a further technical solution, a support plate is provided at the bottom of the mounting plate, and a lifting member is provided between the support plate and the mounting plate.

[0007] In a further technical solution, the lifting member includes a second screw rod. A threaded hole matching the second screw rod is provided in the middle of the bottom of the mounting plate. A through hole is provided in the middle of the side of the support plate close to the mounting plate. The second screw rod passes through the through hole and is connected to the threaded hole. A support ring with a diameter larger than the through hole is provided at the bottom end of the second screw rod on the support plate.

[0008] In a further technical solution, guide holes are respectively provided on both sides of the bottom of the mounting plate, and guide posts matching the guide holes are provided on the top of the support plate.

[0009] In a further technical solution, a first gasket is sleeved on the outer side of the first screw rod between the nut and the mounting plate, and a second gasket is sleeved on the outer side of the first screw rod between the internally threaded joint and the mounting plate.

[0010] In a further technical solution, an insulating sleeve is sleeved on the outer side of one end of the connecting rod close to the connecting head.

[0011] In a further technical solution, the cross-section of the part of the connecting rod outside the insulating sleeve is hexagonal.

[0012] The beneficial effects of the utility model are as follows:

[0013] 1. Loosen the nut on the first screw rod, and the distance between the two connecting pieces can be adjusted along the length direction of the kidney-shaped hole on the mounting plate, that is, the distance between the connecting heads of the connecting electrodes can be adjusted to adapt to the electrofusion fittings with different electrode distances. In addition, the connecting rod can be rotated relative to the internal thread joint, and the connecting head can be adjusted in the direction perpendicular to the mounting plate, so as to adapt to the electrofusion fittings with different radial positions of the two electrodes;

[0014] 2. A support plate is provided to provide support for the bottom of the electrofusion fitting when the connecting head connects the electrode, so that it is not necessary for the staff to hold the electrofusion fitting by hand all the time during connection. Description of the Drawings

[0015] Figure 1 is a three-dimensional schematic diagram of the adjustable resistance test tooling for electrofusion fittings according to an embodiment of the utility model;

[0016] Figure 2 is a side view schematic diagram of the adjustable resistance test tooling for electrofusion fittings according to an embodiment of the utility model;

[0017] Figure 3 is a cross-sectional view schematic diagram of the adjustable resistance test tooling for electrofusion fittings according to an embodiment of the utility model;

[0018] Figure 4 is a structural schematic diagram of the adjusting part and the connecting part according to an embodiment of the utility model;

[0019] Figure 5 is a bottom view schematic diagram of the mounting plate according to an embodiment of the utility model.

[0020] Description of the Reference Numerals:

[0021] 10. Mounting plate; 11. Kidney-shaped hole; 12. Screw hole; 13. Guide hole; 21. First screw rod; 211. Thread section; 212. Connection section; 22. Nut; 23. Internal thread joint; 24. First gasket; 25. Second gasket; 31. Connecting rod; 32. Connecting head; 33. External thread section; 34. Insulating sleeve; 40. Support plate; 41. Second screw rod; 42. Support ring; 43. Guide post. Detailed Embodiment

[0022] The following further illustrates the embodiments of the utility model with reference to the drawings.

[0023] Embodiment:

[0024] As Figures 1-4 shown, an adjustable resistance test tooling for electrofusion fittings includes a mounting plate 10, an adjusting member, and a connecting member for connecting electrodes when testing the resistance of electrofusion fittings. The mounting plate 10 can be installed at the edge position of any workbench. There are two waist-shaped holes 11 on the mounting plate 10. The two waist-shaped holes 11 are parallel and on the same horizontal line. The adjusting member includes a first screw 21, a nut 22, and an internally threaded joint 23. The first screw 21 includes a connecting section 212 and a threaded section 211 that matches the nut 22. The internally threaded joint 23 is provided at one end where the connecting section 212 is located. The diameter of the connecting section 212 of the first screw 21 matches the width of the waist-shaped hole 11. The connecting section 212 of the first screw 21 passes through the waist-shaped hole 11, and the nut 22 is connected to the threaded section 211; the connecting member is a conductor, including a connecting rod 31 and a connecting head 32 provided at one end of the connecting rod 31. The connecting rod 31 is provided with an external threaded section 33 that matches the internally threaded joint 23 at the end away from the connecting head 32. The connecting rod 31 is threadedly connected to the internally threaded joint 23 through the external threaded end.

[0025] The working principle of the above technical solution is as follows:

[0026] When adjusting the distance between the connecting heads 32 according to the electrode spacing of the electrofusion fitting to be tested, the nut 22 can be loosened, and the first screw 21 can be moved along the length direction of the waist-shaped hole 11 until the distance between the two connecting heads 32 corresponds to the distance between the electrodes. Then, the nut 22 is tightened so that the nut 22 and the internally threaded joint 23 clamp the mounting plate 10 to fix the position of the connecting member; for electrofusion fittings with different distances between the two electrodes relative to the central axis, after adjusting the distance between the connecting heads 32, according to the distance between the radial positions of the electrodes, after one connecting head 32 is connected to the electrode farther from the central axis, the other connecting rod 31 is rotated to adjust the position of the connecting head 32 so that the connecting head 32 is connected to the electrode closer to the central axis. After the electrodes are connected, the test clips of the existing instrument for testing resistance can be used to clamp the two connecting rods 31 respectively for resistance testing.

[0027] In another embodiment, as Figure 1 , Figure 2 , Figure 3 and Figure 5As shown in the figure, a support plate 40 is provided at the bottom of the mounting plate 10, and a lifting member is provided between the support plate 40 and the mounting plate 10; the lifting member includes a second screw rod 41. A screw hole 12 matching the second screw rod 41 is provided in the middle of the bottom of the mounting plate 10. A through hole is provided in the middle of the side of the support plate 40 close to the mounting plate 10. The second screw rod 41 passes through the through hole and is connected to the screw hole 12. A support ring 42 with a diameter larger than the through hole is provided at the bottom end of the second screw rod 41 in the support plate 40; guide holes 13 are respectively provided on both sides of the bottom of the mounting plate, and guide posts 43 matching the guide holes 13 are provided on the top of the support plate 40.

[0028] The support plate 40 can support the electrofusion fitting during the test instead of manual labor. When adjusting the position of the support plate 40 according to different electrofusion fittings, the second screw rod 41 can be rotated to change the position of the support ring 42 relative to the mounting plate 10, thereby changing the height of the support plate 40. During the adjustment process, the guide post 43 cooperates with the guide hole 13 to play a guiding and limiting role to prevent the support plate 40 from rotating relative to the mounting plate 10.

[0029] In another embodiment, as Figures 1-4 shown, a first gasket 24 is sleeved on the outer side of the first screw rod 21 between the nut 22 and the mounting plate 10, and a second gasket 25 is sleeved on the outer side of the first screw rod 21 between the internal thread joint 23 and the mounting plate 10. The first gasket 24 can increase the contact area between the nut 22 and the mounting plate 10, and the second gasket 25 can increase the contact area between the internal thread joint 23 and the mounting plate, and the fastening effect is better.

[0030] In another embodiment, as Figures 1-4 shown, an insulating sleeve 34 is sleeved on the outer side of one end of the connecting rod 31 close to the connector 32. It is convenient for the staff to contact.

[0031] In another embodiment, the cross-section of the part of the connecting rod 31 outside the insulating sleeve 34 is hexagonal. It has a plane and is convenient for the test clamp to grip.

[0032] The above embodiments only represent the specific implementation manners of the present invention, and the description is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. An adjustable resistance test tool for electric fusion pipe fittings, characterized in that: It includes a mounting plate, an adjusting piece and a connecting piece for connecting electrodes when testing the resistance of an electric fusion pipe fitting. The mounting plate is provided with two waist-shaped holes. The adjusting piece includes a first screw, a nut and an internal threaded joint. The first screw includes a connecting section and a threaded section matching the nut. The internal threaded joint is provided at one end where the connecting section is located. The diameter of the connecting section matches the width of the waist-shaped hole. The connecting section of the first screw is passed through the waist-shaped hole, and the nut is connected to the threaded section. The connecting piece is a conductor, including a connecting rod and a connecting head provided at one end of the connecting rod. The end of the connecting rod away from the connecting head is provided with an external threaded section matching the internal threaded joint.

2. The adjustable resistance test tool for electric fusion pipe fittings according to claim 1 is characterized in that: A supporting plate is provided at the bottom of the mounting plate, and a lifting member is provided between the supporting plate and the mounting plate.

3. The adjustable resistance test tool for electric fusion pipe fittings according to claim 2 is characterized in that: The lifting member includes a second screw rod, a screw hole matching the second screw rod is provided in the middle of the bottom of the mounting plate, a through hole is provided in the middle of the support plate close to the mounting plate, the second screw rod passes through the through hole and is connected to the screw hole, and a support ring with a diameter larger than the through hole is provided at the bottom end of the support plate.

4. The adjustable resistance test tool for electric fusion pipe fittings according to claim 3 is characterized in that: Guide holes are respectively arranged on both sides of the bottom of the installation, and guide columns matching the guide holes are arranged on the top of the support plate.

5. The adjustable resistance test tool for electric fusion pipe fittings according to claim 1, characterized in that: A first gasket is sleeved on the outer side of the first screw rod between the nut and the mounting plate, and a second gasket is sleeved on the outer side of the first screw rod between the internal thread joint and the mounting plate.

6. The adjustable resistance test tool for electric fusion pipe fittings according to claim 1, characterized in that: An insulating sleeve is sleeved on the outer side of one end of the connecting rod close to the connecting head.

7. The adjustable resistance test tool for electric fusion pipe fittings according to claim 6, characterized in that: The cross section of the portion of the connecting rod outside the insulating sleeve is hexagonal.

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