A jig for detecting thickness of engine pipes

Abstract

The present invention relates to the technical field of pipe thickness detection, and discloses a jig for detecting the thickness of engine pipes, comprising a base plate and a pipe to be detected, wherein a gantry is fixedly mounted on the upper surface of the base plate, a through hole is formed through the top of the gantry, an outer diameter detection ring and an inner diameter detection disk that can move up and down are respectively mounted inside the through hole, the outer diameter detection ring is sleeved on the outer side of the inner diameter detection disk, a detection hole for detecting the thickness of the pipe is formed between the outer diameter detection ring and the inner diameter detection disk, and a support mechanism for supporting the outer diameter detection ring and the inner diameter detection disk is mounted on the base plate. The present invention supports the inner diameter detection disk and the outer diameter detection ring respectively by using a first spring rod and a second spring rod, and cooperates with the use of a first push rod, a second push rod and a touch switch to prevent the pipe to be detected from continuing to move downward when the thickness is unqualified, causing the pipe to be detected to damage the inner diameter detection disk and the outer diameter detection ring.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe thickness detection, and in particular to a jig for detecting the thickness of an engine pipe. Background Art

[0002] Engine fittings refer to the pipes and fittings used to transport fluids (such as fuel, coolant, lubricating oil, and air) within an engine. These fittings are crucial to the proper functioning of the engine and are typically required to possess properties such as high-temperature resistance, high-pressure resistance, corrosion resistance, and wear resistance to ensure efficient and reliable operation. During use, fittings sometimes need to be placed within pipes of a fixed size, making insertion difficult if the fittings are too thick.

[0003] The existing pipe thickness inspection jig (publication number: CN203857911U) has at least the following disadvantages: the above patent requires the pipe to pass through the inspection device during use. If it passes, the product is qualified; if it fails, the product is unqualified, making the inspection more intuitive; because the pipe is pushed into the inspection jig by a cylinder in the above patent, if the pipe thickness is unqualified, the pipe will be squeezed with the inspection jig, which can easily cause damage to the jig. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an engine pipe thickness detection jig.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A jig for detecting the thickness of an engine pipe fitting comprises a base plate and a pipe fitting to be detected in thickness, a portal frame being fixedly mounted on the upper surface of the base plate, a through hole being penetrated through the top of the portal frame, an outer diameter detection ring and an inner diameter detection disk being mounted inside the through hole, respectively, the outer diameter detection ring being sleeved on the outer side of the inner diameter detection disk, a detection hole for detecting the thickness of the pipe fitting being formed between the outer diameter detection ring and the inner diameter detection disk, a support mechanism for supporting the outer diameter detection ring and the inner diameter detection disk being mounted on the base plate, and two sets of marking mechanisms for marking the surface of the pipe fitting being mounted on the top of the portal frame.

[0007] As a further solution of the present invention, the support mechanism includes a first spring rod fixedly mounted on the upper surface of the base plate, the telescopic end of the first spring rod is fixedly mounted to the bottom of the inner diameter detection disk, and a plurality of second spring rods are fixedly mounted at equal intervals in the circumferential direction on the upper surface of the base plate, and the telescopic ends of the plurality of second spring rods are fixedly mounted to the bottom of the outer diameter detection ring.

[0008] As a further solution of the present invention, the marking mechanism includes a slide groove that passes through the top of the portal frame, and a support frame is slidably installed on the inner wall of the slide groove. The support frame is a U-shaped structure, and a guide rod is fixedly installed between the outer surfaces of the opposite sides of the support frame. A slider is slidably installed on the outer surface of the guide rod, and a yield spring rod is fixedly installed on the outer surface of the slider close to the pipe fitting. A marking pen is fixedly installed on the telescopic end of the yield spring rod, and trigger components that drive the corresponding support frames to move are respectively installed on the outer diameter detection ring and the inner diameter detection disk, and a moving component is installed between the slider and the portal frame.

[0009] As a further solution of the present invention, the trigger assembly includes a first push rod and a second push rod fixedly mounted on the lower surface of the outer diameter detection ring and the inner diameter detection disk, respectively. The outer surface of one side of the bottom of the first push rod and the second push rod are fixedly mounted with guide columns. The bottom end of the support frame is fixedly mounted with a vertical rod, and the bottom end of the vertical rod is fixedly mounted with a movable plate. A first guide groove is opened through the outer surface of the movable plate, and the guide columns installed on the bottom of the first push rod and the second push rod are respectively slidably mounted with the inner walls of the first guide groove opened on the corresponding movable plate.

[0010] As a further solution of the present invention, the moving component includes a door-shaped plate fixedly installed on the top of the door-shaped frame, a second guide groove is opened through the top of the door-shaped plate, a moving column is fixedly installed on the top of the slider, and the moving column is slidably installed with the inner wall of the second guide groove.

[0011] As a further solution of the present invention, a reset spring rod is fixedly installed between the support frame and the inner wall of the sliding groove near one end of the outer diameter detection ring.

[0012] As a further solution of the present invention, two touch switches are fixedly mounted on the upper surface of the base plate, and the two touch switches are respectively mounted directly below the first push rod and the second push rod.

[0013] As a further solution of the present invention, a lifting frame is fixedly installed on the upper surface of the base plate, a lifting plate is slidably installed on the inner wall of the lifting frame, a three-jaw chuck for fixing the pipe fitting is fixedly installed through the lower surface of the lifting plate, an electric telescopic rod is fixedly installed on the upper surface of the base plate, and the telescopic end of the electric telescopic rod is fixedly installed on the lower surface of the lifting plate.

[0014] The beneficial effects of the present invention are:

[0015] 1. The inner diameter detection disc and outer diameter detection ring are supported by the first spring rod and the second spring rod respectively. In conjunction with the first push rod, the second push rod and the touch switch, it can prevent the inner diameter detection disc and outer diameter detection ring from being damaged by the inner diameter detection disc and the outer diameter detection ring when the thickness of the pipe to be tested is unqualified and the pipe to be tested continues to move downward.

[0016] 2. When the inner diameter detection plate or the outer diameter detection ring drives the second push rod or the first push rod to move downward, the guide column installed at the bottom of the second push rod or the first push rod will slide in the first guide groove, so that the movable plate can drive the support frame as a whole to move toward the pipe fitting through the vertical rod, so that the marker installed on the support frame through the yield spring rod contacts the outside of the pipe fitting to mark the surface of the pipe fitting (the two markers arranged opposite each other have different colors so that different colors can be marked when the outer diameter or inner diameter of the pipe fitting is detected to be unqualified), which facilitates the subsequent reprocessing of the inner diameter or outer diameter of the defective pipe fitting;

[0017] 3. When the support frame moves, it will drive the slider to move synchronously. Since the moving column installed on the top of the slider is slidably installed with the second guide groove opened on the top of the door plate, the slider can move toward the pipe fitting while also driving the marker pen to move horizontally through the spring rod, so that the marker pen can draw more obvious lines on the surface of the pipe fitting, which is convenient for inspection personnel to better understand the reasons for the failure of the pipe fitting. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of an engine pipe thickness detection jig proposed by the present invention;

[0019] Figure 2 This is a schematic diagram of the portal structure of an engine pipe thickness detection jig proposed by the present invention;

[0020] Figure 3 This is a schematic diagram of the outer diameter detection ring structure of an engine pipe thickness detection fixture proposed by the present invention;

[0021] Figure 4 This is a schematic structural diagram of the inner diameter detection plate of an engine pipe thickness detection jig proposed by the present invention;

[0022] Figure 5 This is a schematic cross-sectional view of the portal frame of an engine pipe thickness detection jig proposed by the present invention;

[0023] Figure 6 This is a schematic diagram of the door plate structure of an engine pipe thickness detection jig proposed by the present invention;

[0024] Figure 7 for Figure 5 A magnified view of the structure at center A;

[0025] Figure 8 for Figure 5 Enlarged view of the structure at point B in the middle.

[0026] In the figure: 1. Base plate; 2. Door frame; 3. Outer diameter detection ring; 4. Inner diameter detection disk; 5. First spring rod; 6. Second spring rod; 7. Slide groove; 8. Support frame; 9. Give way spring rod; 10. Marker pen; 11. Guide rod; 12. Slider; 13. Reset spring rod; 14. Vertical rod; 15. First guide groove; 16. Touch switch; 17. Second push rod; 18. First push rod; 19. Guide column; 20. Moving column; 21. Door plate; 22. Second guide groove; 23. Lifting plate; 24. Three-jaw chuck; 25. Electric telescopic rod; 26. Moving plate; 27. Lifting frame. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0029] Refer to the attached Figure 1 -Attached Figure 8 A jig for detecting the thickness of an engine pipe comprises a base plate 1 and a pipe to be tested for thickness. A portal frame 2 is fixedly mounted on the upper surface of the base plate 1. A through hole is formed on the top of the portal frame 2. An outer diameter detection ring 3 and an inner diameter detection disk 4 are installed inside the through hole, which can move up and down. The outer diameter detection ring 3 is sleeved on the outer side of the inner diameter detection disk 4. A detection hole for detecting the thickness of the pipe is formed between the outer diameter detection ring 3 and the inner diameter detection disk 4. A supporting mechanism for supporting the outer diameter detection ring 3 and the inner diameter detection disk 4 is installed on the base plate 1. Two sets of marking mechanisms for marking the surface of the pipe fittings are installed on the top of the portal frame 2. A lifting frame 27 is fixedly installed on the upper surface of the base plate 1. A lifting plate 23 is slidably installed on the inner wall of the lifting frame 27. A three-jaw chuck 24 for fixing the pipe fittings is fixedly installed on the lower surface of the lifting plate 23. The three-jaw chuck 24, the outer diameter detection ring 3 and the inner diameter detection disk 4 are arranged on the same axis. An electric telescopic rod 25 is fixedly installed on the upper surface of the base plate 1, and the telescopic end of the electric telescopic rod 25 is fixedly installed on the lower surface of the lifting plate 23.

[0030] During use, the three-jaw chuck 24 is used to clamp the pipe to be inspected, and the telescopic end of the electric telescopic rod 25 drives the lifting plate 23 to move downward a certain distance as a whole, so that the end of the pipe is vertically inserted into the inspection hole formed between the outer diameter inspection ring 3 and the inner diameter inspection disk 4. If the pipe can pass through the inspection hole smoothly, it means that the thickness of the pipe is within the standard range and it is a good product.

[0031] In this embodiment, the support mechanism includes a first spring rod 5 fixedly mounted on the upper surface of the base plate 1, the telescopic end of the first spring rod 5 is fixedly mounted to the bottom of the inner diameter detection disk 4, and a plurality of second spring rods 6 are fixedly mounted at equal intervals in the circumferential direction on the upper surface of the base plate 1, and the telescopic ends of the plurality of second spring rods 6 are fixedly mounted to the bottom of the outer diameter detection ring 3.

[0032] During use, the inner diameter detection disk 4 and the outer diameter detection ring 3 are supported respectively by the first spring rod 5 and the second spring rod 6, and the use of the first push rod 18, the second push rod 17 and the touch switch 16 can prevent the pipe to be tested from continuing to move downward when the thickness is unqualified, so that the pipe to be tested may not cause damage to the inner diameter detection disk 4 and the outer diameter detection ring 3.

[0033] In this embodiment, the marking mechanism includes a slide groove 7 that runs through the top of the door frame 2, and a support frame 8 is slidably installed on the inner wall of the slide groove 7. The support frame 8 is a U-shaped structure. A guide rod 11 is fixedly installed between the outer surfaces of the opposite sides of the support frame 8, and a slider 12 is slidably installed on the outer surface of the guide rod 11. A yield spring rod 9 is fixedly installed on the outer surface of the slider 12 close to the pipe fitting, and a marking pen 10 is fixedly installed on the telescopic end of the yield spring rod 9. Trigger components that drive the corresponding support frame 8 to move are respectively installed on the outer diameter detection ring 3 and the inner diameter detection disk 4. A trigger component that drives the corresponding support frame 8 to move is installed between the slider 12 and the door frame 2. It is equipped with a moving assembly, and the trigger assembly includes a first push rod 18 and a second push rod 17 respectively fixedly mounted on the lower surface of the outer diameter detection ring 3 and the inner diameter detection disk 4. The outer surface of the bottom side of the first push rod 18 and the second push rod 17 is fixedly mounted with a guide column 19, the bottom end of the support frame 8 is fixedly mounted with a vertical rod 14, and the bottom end of the vertical rod 14 is fixedly mounted with a moving plate 26. The outer surface of the moving plate 26 is penetrated by a first guide groove 15, and the guide columns 19 installed at the bottom of the first push rod 18 and the second push rod 17 are respectively slidably mounted with the inner wall of the first guide groove 15 opened on the corresponding moving plate 26.

[0034] When in use, the yield spring rod 9 can produce a certain contraction when the marker 10 contacts the pipe fitting, so that the support frame 8 moves into place without affecting the marker 10 moving and marking the pipe fitting surface; when the inner diameter detection disk 4 or the outer diameter detection ring 3 drives the second push rod 17 or the first push rod 18 to move downward, the guide column 19 installed at the bottom of the second push rod 17 or the first push rod 18 will slide in the first guide groove 15, so that the movable plate 26 can drive the support frame 8 as a whole to move toward the pipe fitting through the vertical rod 14, so that the marker 10 installed on the support frame 8 through the yield spring rod 9 is in contact with the outside of the pipe fitting, so as to mark the surface of the pipe fitting (the two markers 10 arranged opposite each other have different colors, so that different colors can be marked respectively when the outer diameter or inner diameter of the pipe fitting is detected to be unqualified), which is convenient for subsequent reprocessing of the inner diameter or outer diameter of the defective pipe fitting.

[0035] In this embodiment, the moving component includes a door plate 21 fixedly installed on the top of the door frame 2, and a second guide groove 22 is opened through the top of the door plate 21. A moving column 20 is fixedly installed on the top of the slider 12, and the moving column 20 is slidably installed on the inner wall of the second guide groove 22.

[0036] When the support frame 8 moves, the slider 12 will be driven to move synchronously. Since the moving column 20 installed on the top of the slider 12 is slidably installed in the second guide groove 22 opened on the top of the door plate 21, the slider 12 can move toward the pipe fitting while also driving the marker 10 to move horizontally by giving way to the spring rod 9, so that the marker 10 can draw more obvious lines on the surface of the pipe fitting, which is convenient for the inspectors to better understand the reasons why the pipe fitting is unqualified.

[0037] In this embodiment, a return spring rod 13 is fixedly installed between the support frame 8 and the inner wall of the sliding groove 7 close to the end of the outer diameter detection ring 3.

[0038] When in use, the reset spring rod 13 is used to push the support frame 8 to reset as a whole, so as to prevent the marking pen 10 from being in contact with the surface of the pipe all the time, causing confusion in the marking.

[0039] In this embodiment, two touch switches 16 are fixedly mounted on the upper surface of the base plate 1 , and the two touch switches 16 are respectively mounted directly below the first push rod 18 and the second push rod 17 .

[0040] During use, when the inner diameter of the pipe is too small and its inner wall abuts against the outer periphery of the inner diameter detection disk 4, the downward-moving pipe will push the inner diameter detection disk 4 to move downward, causing the second push rod 17 installed at the bottom of the inner diameter detection disk 4 to move downward accordingly. When the bottom end of the second push rod 17 touches the touch switch 16 installed on the base plate 1, the touch switch 16 will stop the further downward movement of the telescopic end of the electric telescopic rod 25 through the external controller, and cause the pipe to be tested to move upward and reset under the action of the electric telescopic rod 25. At this time, it indicates that the thickness of this pipe is unqualified and is a defective product; similarly, when the outer diameter of the pipe is too large, the outer diameter detection ring 3 will abut against the outer wall of the pipe, causing the first push rod 18 installed at the bottom of the outer diameter detection ring 3 to trigger the touch switch 16 until the pipe to be tested moves upward and reset. This state also indicates that the thickness of this pipe is unqualified and is a defective product.

[0041] From the above description, it can be seen that the above-mentioned embodiment of the present invention achieves the following technical effects: when in use, the three-jaw chuck 24 clamps the pipe to be inspected, and the telescopic end of the electric telescopic rod 25 drives the lifting plate 23 to move downward a certain distance as a whole, so that the end of the pipe is vertically inserted into the inspection hole formed between the outer diameter inspection ring 3 and the inner diameter inspection disk 4. If the pipe can pass through the inspection hole smoothly, it indicates that the thickness of the pipe is within the standard range and is a good product;

[0042] When the inner diameter of the pipe is too small and its inner wall abuts against the outer periphery of the inner diameter detection disk 4, the downward-moving pipe will push the inner diameter detection disk 4 to move downward, causing the second push rod 17 installed at the bottom of the inner diameter detection disk 4 to move downward accordingly. When the bottom end of the second push rod 17 touches the touch switch 16 installed on the bottom plate 1, the touch switch 16 will stop the further downward movement of the telescopic end of the electric telescopic rod 25 through the external controller, and cause the pipe to be tested to move upward and reset under the action of the electric telescopic rod 25. At this time, it indicates that the thickness of this pipe is unqualified and is a defective product; similarly, when the outer diameter of the pipe is too large, the outer diameter detection ring 3 will abut against the outer wall of the pipe, causing the first push rod 18 installed at the bottom of the outer diameter detection ring 3 to trigger the touch switch 16 until the pipe to be tested moves upward and reset. This state also indicates that the thickness of this pipe is unqualified and is a defective product.

[0043] When the inner diameter detection disk 4 or the outer diameter detection ring 3 drives the second push rod 17 or the first push rod 18 to move downward, the guide column 19 installed at the bottom of the second push rod 17 or the first push rod 18 will slide in the first guide groove 15, so that the movable plate 26 can drive the support frame 8 to move as a whole toward the pipe fitting through the vertical rod 14, so that the marking pen 10 installed on the support frame 8 through the yield spring rod 9 is in contact with the outside of the pipe fitting to mark the surface of the pipe fitting (the two marking pens 10 arranged opposite to each other have different colors, so that different colors can be marked respectively when the outer diameter or inner diameter of the pipe fitting is detected to be unqualified), which is convenient for subsequent reprocessing of the inner diameter or outer diameter of the defective pipe fitting;

[0044] When the support frame 8 moves, the slider 12 will be driven to move synchronously. Since the moving column 20 installed on the top of the slider 12 is slidably installed in the second guide groove 22 opened on the top of the door plate 21, the slider 12 can move toward the pipe fitting while also driving the marker 10 to move horizontally by giving way to the spring rod 9, so that the marker 10 can draw more obvious lines on the surface of the pipe fitting, which is convenient for the inspectors to better understand the reasons why the pipe fitting is unqualified.

[0045] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A jig for testing the thickness of an engine pipe, comprising a base plate and a pipe to be tested for thickness, characterized in that: The top surface of the bottom plate is fixedly mounted with a door frame, the top of the door frame is penetrated by a through hole, and the inner surface of the through hole is respectively installed with an outer diameter detection ring and an inner diameter detection disk which can move up and down, the outer diameter detection ring is sleeved on the outer side of the inner diameter detection disk, and a detection hole for detecting the thickness of the pipe fitting is formed between the outer diameter detection ring and the inner diameter detection disk, and a supporting mechanism for supporting the outer diameter detection ring and the inner diameter detection disk is installed on the bottom plate, and two groups of marking mechanisms for marking the surface of the pipe fitting are installed on the top of the door frame, and the marking mechanism includes a slide groove penetrated through the top of the door frame, and a support frame is slidably mounted on the inner wall of the slide groove, and the support frame is a U-shaped structure, and a guide rod is fixedly mounted between the outer surfaces of the opposite sides of the support frame, and a slider is slidably mounted on the outer surface of the guide rod. The outer surface of the slider close to the pipe fitting is fixedly installed with a yield spring rod, and the telescopic end of the yield spring rod is fixedly installed with a marker pen, and the outer diameter detection ring and the inner diameter detection disk are respectively installed with a trigger assembly that drives the corresponding support frame to move, and a moving assembly is installed between the slider and the door frame, and the trigger assembly includes a first push rod and a second push rod that are respectively fixedly installed on the outer diameter detection ring and the lower surface of the inner diameter detection disk, and the outer surfaces of one side of the bottom of the first push rod and the second push rod are fixedly installed with a guide column, and the bottom end of the support frame is fixedly installed with a vertical rod, and the bottom end of the vertical rod is fixedly installed with a moving plate, and the outer surface of the moving plate is penetrated by a first guide groove, and the guide columns installed at the bottom of the first push rod and the second push rod are respectively slidably installed with the inner wall of the first guide groove opened on the corresponding moving plate; When the inner diameter detection disk or the outer diameter detection ring drives the second push rod or the first push rod to move downward, the guide column installed at the bottom of the second push rod or the first push rod will slide in the first guide groove, so that the movable plate can drive the support frame as a whole to move toward the pipe fitting through the vertical rod, so that the marking pen installed on the support frame through the yield spring rod can contact the outside of the pipe fitting to mark the surface of the pipe fitting.

2. The engine pipe thickness detection jig according to claim 1, characterized in that: The support mechanism includes a first spring rod fixedly mounted on the upper surface of the base plate, the telescopic end of the first spring rod is fixedly mounted to the bottom of the inner diameter detection disk, and multiple second spring rods are fixedly mounted at equal intervals in the circumferential direction of the upper surface of the base plate, and the telescopic ends of the multiple second spring rods are fixedly mounted to the bottom of the outer diameter detection ring.

3. The engine pipe thickness detection jig according to claim 1, characterized in that: The moving assembly includes a door-shaped plate fixedly mounted on the top of the door-shaped frame, a second guide groove is formed through the top of the door-shaped plate, a moving column is fixedly mounted on the top of the slider, and the moving column is slidably mounted on the inner wall of the second guide groove.

4. The engine pipe thickness detection jig according to claim 1, characterized in that: A reset spring rod is fixedly installed between the support frame and the inner wall of the sliding groove close to one end of the outer diameter detection ring.

5. The engine pipe thickness detection jig according to claim 1, characterized in that: Two touch switches are fixedly installed on the upper surface of the bottom plate, and the two touch switches are respectively installed directly below the first push rod and the second push rod.

6. The engine pipe thickness detection jig according to claim 1, characterized in that: A lifting frame is fixedly installed on the upper surface of the base plate, a lifting plate is slidably installed on the inner wall of the lifting frame, a three-jaw chuck for fixing pipe fittings is fixedly installed on the lower surface of the lifting plate, an electric telescopic rod is fixedly installed on the upper surface of the base plate, and the telescopic end of the electric telescopic rod is fixedly installed on the lower surface of the lifting plate.

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