Paint drawing instrument for detecting anticorrosive coating of crane body

Abstract

The utility model discloses a paint drawing instrument for detecting an anticorrosive coating of a crane body. Comprising a quick-release drawing head, a spindle, a pressure-resistant connecting pipe, a pressure regulating piston and a pressure gauge, wherein the spindle is used for being adhered and fixed on the surface of an anticorrosive coating and is movably mounted at the lower end of the quick-release drawing head; the pressure-resistant connecting pipe is connected to the upper end of the quick-release drawing head; the pressure regulating piston is arranged above the pressure-resistant connecting pipe; the end, away from the quick-release drawing head, of the pressure-resistant connecting pipe is connected with a connecting straight pipe, the upper end of the connecting straight pipe is movably connected with a first connecting bent pipe through a first rotating connector, the end of the first connecting bent pipe is movably connected with a second connecting bent pipe through a second rotating connector, and the second connecting bent pipe is connected with the pressure adjusting piston through a pressure-resistant extension pipe. When the device is used, the pressure regulating piston can swing up and down and left and right relative to the quick-release drawing head, the movement range is enlarged, and the distance is prolonged through the pressure-resistant extension pipe, so that the influence of external force on the quick-release drawing head and a spindle is avoided, the accuracy of a detection result is improved, and the quality of an anticorrosive coating of a product is ensured.

Description

Technical Field

[0001] This utility model relates to the field of paint testing technology, specifically a paint pull-out tester for detecting anti-corrosion coatings on crane bodies. Background Technology

[0002] Cranes, also known as hoists, are devices used for moving heavy objects and are indispensable in various fields, including manufacturing, transportation, and infrastructure construction. Typically, most cranes are used outdoors, exposed to wind, sun, rain, and freezing temperatures for extended periods, making them prone to corrosion. This can range from aesthetically pleasing to serious damage, affecting mechanical strength and creating safety hazards. Therefore, it is crucial to protect critical components such as the boom, and the use of anti-corrosion coatings is essential.

[0003] During crane manufacturing, we need to test the anti-corrosion coating on the crane body. Currently, the commonly used testing method is adhesion testing using a pull-out tester. When operating a manual pull-out tester, the test spindle is adhered and fixed to the outside of the anti-corrosion coating at the testing location. A cutter is used to remove a ring of anti-corrosion coating around the spindle to prevent the surrounding coating from affecting the test results. The quick-release pull-out head of the pull-out tester is then installed on the spindle and supported on the crane body. A negative pressure is generated by the pressure regulating piston to pull the spindle until it tears the anti-corrosion coating off the crane body, thus testing the adhesion of the anti-corrosion coating.

[0004] Currently, many manual drawing machines have their quick-release drawing heads directly connected to the pressure regulating piston in a straight line via a pressure-resistant connecting pipe. Due to the limitations of the drawing machine's own structure, the pressure-resistant connecting pipe needs to withstand gas pressure and has high structural strength. It often has a steel wire braided mesh interlayer inside, which is relatively hard. When one hand holds the pressure regulating piston and the other hand turns the handle of the pressure regulating piston, the shaking and swaying caused by the operation can easily be transmitted to the quick-release drawing head through the pressure-resistant connecting pipe. This makes the spindle susceptible to the influence of the external force prying by the quick-release drawing head, resulting in inaccurate test results and inconvenience in use. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a paint pull-out tester for inspecting anti-corrosion coatings on crane bodies. This solves the problem that the shaking and swaying caused by manual pull-out testers can easily generate external prying forces on the spindle, leading to inaccurate test results.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] A paint pull-out tester for inspecting anti-corrosion coatings on crane bodies includes a quick-release pull-out head, a spindle for attaching and fixing to the surface of the anti-corrosion coating and movably mounted at the lower end of the quick-release pull-out head, a pressure-resistant connecting pipe connected to the upper end of the quick-release pull-out head, a pressure regulating piston located above the pressure-resistant connecting pipe, and a pressure gauge mounted on the pressure regulating piston. The screw end of the pressure regulating piston is fixed with a turning handle. The end of the pressure-resistant connecting pipe opposite to the quick-release pull-out head is connected to a straight connecting pipe. The upper end of the straight connecting pipe is movably connected to a first connecting bend via a first rotary joint. The end of the first connecting bend is movably connected to a second connecting bend via a second rotary joint. The second connecting bend is connected to the pressure regulating piston via a pressure-resistant extension pipe.

[0008] Preferably, the connecting straight pipe, connecting bend one, and connecting bend two are all pressure-resistant steel pipes.

[0009] Preferably, both the first connecting bend and the second connecting bend are 90° bends.

[0010] Preferably, the pressure gauge is located on the side of the pressure regulating piston opposite to the rotary joint.

[0011] Preferably, the total length of the quick-release pull-out head, pressure-resistant connecting pipe, connecting straight pipe, rotary joint one and connecting bend one located on one side of the rotary joint two is equal to the total length of the connecting bend two, pressure-resistant extension pipe and pressure regulating piston on the other side.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] This invention, by setting a rotary joint 1, a rotary joint 2, a connecting bend 1, and a connecting bend 2 between the pressure-resistant connecting pipe and the pressure-regulating piston, allows the pressure-regulating piston to swing up and down and left and right relative to the quick-release pull-out head during use, increasing the range of motion. The distance is extended by the pressure-resistant extension pipe, thereby avoiding the influence of external forces on the quick-release pull-out head and the spindle, improving the accuracy of test results, ensuring the quality of the product's anti-corrosion coating, and solving the problem that the shaking and swaying caused by the operation of manual pull-out instruments can easily generate prying external forces on the spindle, leading to inaccurate test results. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the folding and storage of this utility model;

[0016] Figure 3 This is a top view of the utility model in use.

[0017] In the diagram: 1. Quick-release pull-out head; 2. Spindle; 3. Pressure-resistant connecting pipe; 4. Pressure regulating piston; 401. Turn handle; 5. Pressure gauge; 6. Connecting straight pipe; 7. Rotary joint one; 8. Connecting bend one; 9. Rotary joint two; 10. Connecting bend two; 11. Pressure-resistant extension pipe. Detailed Implementation

[0018] 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.

[0019] like Figure 1-3 As shown, this utility model provides a technical solution: a paint pull-out tester for inspecting anti-corrosion coatings on crane bodies, including a quick-release pull-out head 1, a spindle 2 for pasting and fixing to the surface of the anti-corrosion coating and movably installed at the lower end of the quick-release pull-out head 1, a pressure-resistant connecting pipe 3 connected to the upper end of the quick-release pull-out head 1, a pressure regulating piston 4 set above the pressure-resistant connecting pipe 3, and a pressure gauge 5 installed on the pressure regulating piston 4. The pressure gauge 5 is located on the side of the pressure regulating piston 4 away from the rotary joint 7. Most people are right-handed, so the left hand holds the pressure regulating piston 4 and the right hand operates the turning handle 401. When in use, the pressure gauge 5 is located on the right side, which makes it convenient to observe the display of the pressure gauge 5.

[0020] The screw end of the pressure regulating piston 4 is fixed with a turning handle 401. The end of the pressure-resistant connecting pipe 3 away from the quick-release pull head 1 is connected to a connecting straight pipe 6. The upper end of the connecting straight pipe 6 is movably connected to a connecting bend 8 through a rotary joint 7. The end of the connecting bend 8 is movably connected to a connecting bend 10 through a rotary joint 9. The connecting bend 10 is connected to the pressure regulating piston 4 through a pressure-resistant extension pipe 11. The connecting straight pipe 6, the connecting bend 8 and the connecting bend 10 are all pressure-resistant steel pipes.

[0021] Both connecting bend 1 (8) and connecting bend 2 (10) are 90° bends. The total length of the quick-release pull-out head 1, pressure-resistant connecting pipe 3, connecting straight pipe 6, rotating joint 1 (7) and connecting bend 1 (8) on one side of the rotating joint 2 (9) is equal to the total length of the connecting bend 2 (10), pressure-resistant extension pipe 11 and pressure regulating piston 4 on the other side. When not in use, they can be easily folded and stored, reducing space occupation and making them convenient to carry and use.

[0022] Working principle:

[0023] The test spindle 2 is vertically attached and fixed to the outside of the anti-corrosion coating of the test area, and a ring of anti-corrosion coating around the spindle 2 is cut off. The quick-release pull head 1 is installed on the spindle 2 and supported on the machine body. Turning the handle 401 of the pressure regulating piston 4 generates negative pressure to pull the spindle 2. Because there are rotary joints 7 and 9, connecting bend 8 and connecting bend 10 between the pressure-resistant connecting pipe 3 and the pressure regulating piston 4, the pressure regulating piston 4 can swing up and down and left and right relative to the quick-release pull head 1 under the action of rotary joints 7 and 9, which increases the range of motion. At the same time, the pressure-resistant extension pipe 11 extends the distance, avoiding the external force that would cause the quick-release pull head 1 to pry the spindle 2, ensuring that the anti-corrosion coating attached to the test spindle 2 is pulled off by negative pressure, thereby improving the accuracy of the test results.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A paint pull-out tester for inspecting anti-corrosion coatings on crane bodies, comprising a quick-release pull-out head (1), a spindle (2) for attaching and fixing to the surface of the anti-corrosion coating and movably mounted on the lower end of the quick-release pull-out head (1), a pressure-resistant connecting pipe (3) connected to the upper end of the quick-release pull-out head (1), a pressure regulating piston (4) disposed above the pressure-resistant connecting pipe (3), and a pressure gauge (5) mounted on the pressure regulating piston (4), wherein the screw end of the pressure regulating piston (4) is fixed with a turning handle (401), characterized in that: The pressure-resistant connecting pipe (3) is connected to a connecting straight pipe (6) at one end away from the quick-release pull head (1). The upper end of the connecting straight pipe (6) is movably connected to a connecting bend (8) via a rotary joint (7). The end of the connecting bend (8) is movably connected to a connecting bend (10) via a rotary joint (9). The connecting bend (10) is connected to the pressure regulating piston (4) via a pressure-resistant extension pipe (11).

2. The paint pull-out tester for inspecting anti-corrosion coatings on crane bodies according to claim 1, characterized in that: The connecting straight pipe (6), connecting bend one (8) and connecting bend two (10) are all pressure-resistant steel pipes.

3. The paint pull-out tester for inspecting anti-corrosion coatings on crane bodies according to claim 1, characterized in that: Both the first connecting bend (8) and the second connecting bend (10) are 90° bends.

4. The paint pull-out tester for inspecting anti-corrosion coatings on crane bodies according to claim 1, characterized in that: The pressure gauge (5) is located on the side of the pressure regulating piston (4) away from the rotary joint (7).

5. The paint pull-out tester for inspecting anti-corrosion coatings on crane bodies according to claim 1, characterized in that: The total length of the quick-release pull-out head (1), pressure-resistant connecting pipe (3), connecting straight pipe (6), rotary joint one (7) and connecting bend one (8) located on one side of the rotary joint two (9) is equal to the total length of the connecting bend two (10), pressure-resistant extension pipe (11) and pressure regulating piston (4) on the other side.

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