A galvanized pipe auxiliary testing device

Abstract

This utility model discloses an auxiliary testing device for galvanized pipes, belonging to the field of galvanized pipe testing technology. It includes a connecting shaft, a connecting sleeve and a movable sleeve mounted on the connecting shaft, a first rotating arm and a second rotating arm connected to the connecting sleeve, a third rotating arm connected to the movable sleeve, and a leveling plate connected to the first and second rotating arms respectively. The third rotating arm is also connected to the middle of the first and second rotating arms. It also includes a pneumatic assembly, which, after contacting the movable sleeve, drives the movable sleeve to slide closer to the connecting sleeve, thereby opening the first and second rotating arms until the leveling plate abuts against the inner wall of the galvanized pipe. This utility model uses the inner wall of the galvanized pipe as a reference to align the connecting shaft with the central axis of the galvanized pipe, thus aligning the testing equipment with the central axis of the galvanized pipe and reducing errors during the testing process.

Description

Technical Field

[0001] This utility model relates to the field of galvanized pipe testing technology, specifically to an auxiliary testing device for galvanized pipes. Background Technology

[0002] When cutting galvanized pipes, the cut plane may deviate from the vertical direction due to reasons such as wear of cutting tools, unstable feed, equipment precision problems, improper operation, or insecure fixing of steel pipes, forming an inclined plane. When it is necessary to weld the two pipe ends together or connect them with pipe fittings, an excessively large inclination will lead to poor contact of the connection surface, affecting the strength, sealing and aesthetics of the connection.

[0003] Therefore, before connection, it is usually necessary to test the parameters of the galvanized pipe cut. In the prior art, when testing galvanized pipes, the testing equipment needs to be aligned with the central axis of the galvanized pipe to reduce the error generated during the testing process. Utility Model Content

[0004] To solve the above problems, this utility model provides an auxiliary inspection device for galvanized pipes, comprising: a connecting shaft, a connecting sleeve and a movable sleeve disposed on the connecting shaft, a first rotating arm and a second rotating arm connected to the connecting sleeve, a third rotating arm connected to the movable sleeve, and a finding plate connected to the first rotating arm and the second rotating arm respectively, wherein the third rotating arm is also connected to the middle part of the first rotating arm and the second rotating arm.

[0005] It also includes a pneumatic assembly, which, after abutting against the movable sleeve, is used to drive the movable sleeve to slide towards the connecting sleeve, thereby opening the first rotating arm and the second rotating arm until the plate abuts against the inner wall of the galvanized pipe.

[0006] Multiple sets of first and second rotating arms are circumferentially arranged on the connecting shaft.

[0007] In some embodiments, the pneumatic assembly includes: a cylinder, a guide rod disposed in the cylinder, and a piston;

[0008] The cylinder body has an internal cavity, the piston is located in the cavity of the cylinder body, and the guide rod is connected to the piston and extends through the cylinder body at both ends.

[0009] In some embodiments, one end of the guide rod is provided with an air injection channel, and the middle part is provided with an air injection hole that communicates with the air injection channel. The air injection hole is connected to the cavity of the cylinder.

[0010] The cavity in the cylinder located on the side where the piston is connected to the air injection port is a pressure chamber; the pressure chamber is used to push the piston and guide rod to move as a whole after the gas pressure medium is injected.

[0011] In some embodiments, the connecting shaft is further provided with a connecting channel, and the end of the guide rod away from the air injection channel is located in the connecting channel. After the end of the guide rod away from the air injection channel abuts against the movable sleeve, it pushes the movable sleeve to slide towards the connecting sleeve.

[0012] In some embodiments, a first return spring is also sleeved on the connecting shaft, and the two ends of the first return spring abut against the connecting sleeve and the movable sleeve, respectively.

[0013] In some embodiments, the movable sleeve is cylindrical and has a sliding key inside, and the connecting shaft has a sliding groove inside that matches the sliding key.

[0014] By adopting the above technical solution, this utility model mainly has the following technical effects:

[0015] By sliding the movable sleeve towards the connecting sleeve, multiple sets of first and second rotating arms are opened, so that the finding plate abuts against the inner wall of the galvanized pipe. Then, using the inner wall of the galvanized pipe as a reference, the connecting shaft is aligned with the central axis of the galvanized pipe, thereby aligning the testing equipment with the central axis of the galvanized pipe and achieving the technical effect of reducing the error generated during the testing process. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an auxiliary testing device for galvanized pipes according to the present invention;

[0017] Figure 2 This is a cross-sectional structural diagram of an auxiliary testing device for galvanized pipes according to the present invention;

[0018] Figure 3 This is a schematic diagram of the internal structure of an auxiliary testing device for galvanized pipes according to the present invention;

[0019] Figure 4 for Figure 3 Enlarged view of part A in the middle.

[0020] The meanings of the reference numerals in the attached figures are as follows:

[0021] 1. Connecting shaft; 11. First return spring; 12. Sliding groove; 13. Connecting channel;

[0022] 2. Connecting sleeve;

[0023] 3. Activity set; 31. Slide button;

[0024] 4. First rotating arm;

[0025] 5. Second rotating arm;

[0026] 6. Third rotating arm;

[0027] 7. Find a tablet;

[0028] 8. Pneumatic components; 81. Cylinder block; 82. Guide rod; 83. Piston; 84. Injection air passage; 85. Injection port; 86. Pressure chamber; 87. Injection pipe. Detailed Implementation

[0029] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0030] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0031] Please see Figures 1-4 This utility model provides an auxiliary testing device for galvanized pipes, comprising: a connecting shaft 1, a connecting sleeve 2 and a movable sleeve 3 disposed on the connecting shaft 1, a first rotating arm 4 and a second rotating arm 5 connected to the connecting sleeve 2, a third rotating arm 6 connected to the movable sleeve 3, and a finding plate 7 connected to the first rotating arm 4 and the second rotating arm 5 respectively, wherein the third rotating arm 6 is also connected to the middle part of the first rotating arm 4 and the second rotating arm 5.

[0032] In some embodiments, one end of the first rotating arm 4 and the second rotating arm 5 are respectively hinged to the connecting sleeve 2, and then connected to the connecting shaft 1 via the connecting sleeve 2. One end of the third rotating arm 6 is hinged to the movable sleeve 3, and the other end is hinged to the middle of the second rotating arm 5 and the first rotating arm 4. The movable sleeve 3 is movably connected to the connecting shaft 1. The above structure allows the third rotating arm 6 to drive the second rotating arm 5 and the first rotating arm 4 to rotate about the connection point with the connecting sleeve 2 when the movable sleeve 3 slides on the connecting shaft 1.

[0033] Furthermore, when the movable sleeve 3 slides towards the connecting sleeve 2, it can drive multiple sets of first rotating arms 4 and second rotating arms 5 to open. By circumferentially setting multiple sets of first rotating arms 4 and second rotating arms 5 on the connecting shaft 1, by abutting the plate 7 against the inner wall of the galvanized pipe, and then using the inner wall of the galvanized pipe as a reference, the connecting shaft 1 is aligned with the central axis of the galvanized pipe, so as to facilitate subsequent inspection of the galvanized pipe using testing equipment.

[0034] In some more preferred embodiments, a first return spring 11 is also sleeved on the connecting shaft 1. The two ends of the first return spring 11 abut against the connecting sleeve 2 and the movable sleeve 3 respectively, thereby driving the movable sleeve 3 to slide away from the connecting sleeve 2, and driving multiple sets of first rotating arms 4 and second rotating arms 5 to retract and reset.

[0035] Furthermore, the movable sleeve 3 is cylindrical and has a sliding key 31 inside. The connecting shaft 1 has a sliding groove 12 inside that matches the sliding key 31. The sliding process of the movable sleeve 3 on the connecting shaft 1 is realized by the sliding key 31 sliding in the sliding groove 12.

[0036] In some embodiments, a pneumatic component 8 is also included. After the pneumatic component 8 abuts against the movable sleeve 3, it is used to drive the movable sleeve 3 to slide towards the connecting sleeve 2, thereby opening the first rotating arm 4 and the second rotating arm 5 until the plate 7 abuts against the inner wall of the galvanized pipe.

[0037] Furthermore, the pneumatic assembly 8 includes: a cylinder 81, a guide rod 82 and a piston 83 disposed in the cylinder 81. In some embodiments, the cylinder 81 is a container for forming a sealed pressure chamber, and has an internal cavity. The piston 83 is disposed in the cavity of the cylinder 81. The guide rod 82 is connected to the piston 83 and its two ends pass through the cylinder 81.

[0038] Furthermore, one end of the guide rod 82 is provided with an injection channel 84, and the middle part is provided with an injection hole 85 communicating with the injection channel 84. The injection hole 85 is connected to the cavity of the cylinder body 81. In the cylinder body 81, the cavity located on the side where the piston 83 is connected to the injection hole 85 is a pressure chamber 86. By providing the pressure chamber 86, after the operator injects the gas pressure medium into the pressure chamber 86 through the injection channel 84 and the injection hole 85 in sequence, the operator can push the overall structure of the piston 83 and the guide rod 82 to move in the direction of increasing the volume of the pressure chamber 86. In some embodiments, the pneumatic assembly 8 further includes an injection pipe 87 connected to the injection channel 84, for injecting the gas pressure medium into the pressure chamber 86 through the injection channel 84 and the injection hole 85.

[0039] In some embodiments, the connecting shaft 1 is further provided with a connecting channel 13, and the end of the guide rod 82 away from the air injection channel 84 is provided in the connecting channel 13. After the end of the guide rod 82 away from the air injection channel 84 abuts against the movable sleeve 3, the movable sleeve 3 is pushed to slide towards the connecting sleeve 2 until it abuts against the connecting sleeve 2, and then the movable sleeve 3 is pushed to slide towards the connecting sleeve 2.

[0040] Finally, it should be noted that the embodiments disclosed in this utility model are merely preferred embodiments of this utility model and are only used to illustrate the technical solutions of this utility model, not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of this utility model.

Claims

1. An auxiliary testing device for galvanized pipes, characterized in that, include: A connecting shaft, a connecting sleeve and a movable sleeve disposed on the connecting shaft, a first rotating arm and a second rotating arm connected to the connecting sleeve, a third rotating arm connected to the movable sleeve, and a finding plate connected to the first rotating arm and the second rotating arm respectively, wherein the third rotating arm is also connected to the middle part of the first rotating arm and the second rotating arm. It also includes a pneumatic assembly, which, after abutting against the movable sleeve, is used to drive the movable sleeve to slide towards the connecting sleeve, thereby opening the first rotating arm and the second rotating arm until the plate abuts against the inner wall of the galvanized pipe. Multiple sets of first and second rotating arms are circumferentially arranged on the connecting shaft.

2. The auxiliary testing device for galvanized pipes according to claim 1, characterized in that, The pneumatic assembly includes: a cylinder, a guide rod and a piston disposed in the cylinder; The cylinder body has an internal cavity, the piston is located in the cavity of the cylinder body, and the guide rod is connected to the piston and extends through the cylinder body at both ends.

3. The auxiliary testing device for galvanized pipes according to claim 2, characterized in that, One end of the guide rod is provided with an air injection channel, and the middle part is provided with an air injection hole that communicates with the air injection channel. The air injection hole is connected to the cavity of the cylinder. The cavity in the cylinder located on the side where the piston is connected to the air injection port is a pressure chamber; the pressure chamber is used to push the piston and guide rod to move as a whole after the gas pressure medium is injected.

4. The auxiliary testing device for galvanized pipes according to claim 3, characterized in that, The connecting shaft is also provided with a connecting channel. The end of the guide rod away from the air injection channel is located in the connecting channel. After the end of the guide rod away from the air injection channel abuts against the movable sleeve, it pushes the movable sleeve to slide towards the connecting sleeve.

5. The auxiliary testing device for galvanized pipes according to claim 1, characterized in that, A first return spring is also sleeved on the connecting shaft, and the two ends of the first return spring abut against the connecting sleeve and the movable sleeve, respectively.

6. The auxiliary testing device for galvanized pipes according to claim 1, characterized in that, The movable sleeve is cylindrical and has a sliding key inside. The connecting shaft has a sliding groove inside that matches the sliding key.

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