Thickness detection jig for engine pipe fitting

Abstract

The invention relates to the technical field of pipe fitting thickness detection, and discloses an engine pipe fitting thickness detection jig which comprises a bottom plate and a pipe fitting with the thickness to be detected, a door-shaped frame is fixedly installed on the upper surface of the bottom plate, and a through hole is formed in the top of the door-shaped frame in a penetrating mode. An outer diameter detection ring and an inner diameter detection disc which can move up and down are installed in the through hole, the outer diameter detection ring is arranged on the outer side of the inner diameter detection disc in a sleeving mode, and a detection hole used for detecting the thickness of a pipe fitting is formed between the outer diameter detection ring and the inner diameter detection disc. The bottom plate is provided with a supporting mechanism used for supporting the outer diameter detection ring and the inner diameter detection disc. The inner diameter detection disc and the outer diameter detection ring are supported by the first spring rod and the second spring rod respectively, and the first push rod, the second push rod and the touch switch are matched for use, so that the to-be-detected pipe fitting can be prevented from continuously moving downwards when the thickness of the to-be-detected pipe fitting is unqualified, and the to-be-detected pipe fitting is prevented from damaging the inner diameter detection disc and the outer diameter detection ring.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe fitting thickness detection, and particularly to a fixture for detecting the thickness of engine pipe fittings. Background Art

[0002] Engine pipe fittings refer to the pipes and fittings used to transport fluids (such as fuel, coolant, lubricating oil, air, etc.) in an engine. These pipe fittings are crucial for the normal operation of the engine and usually require characteristics such as high temperature resistance, high pressure resistance, corrosion resistance, and wear resistance to ensure the efficient and reliable operation of the engine; during the use of the pipe fittings, sometimes the pipe fittings need to be placed in a pipe with a fixed size. At this time, if the pipe fittings are too thick, it is not conducive to putting them in.

[0003] The existing fixture for detecting the thickness of pipe fittings (publication number: CN203857911U) has at least the following drawbacks: when using the above patent, the pipe fittings are passed through the detection device. If it can pass, the product is qualified; if it cannot pass, the product is unqualified, making the detection more intuitive; since the pipe fittings are pushed into the detection fixture by a cylinder in the above patent, when the thickness of the pipe fittings is unqualified, the pipe fittings will be squeezed with the detection fixture, which is likely to damage the fixture. Summary of the Invention

[0004] The purpose of the present invention is to solve the drawbacks existing in the prior art, and to propose a fixture for detecting the thickness of engine pipe fittings.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions: A fixture for detecting the thickness of engine pipe fittings, including a bottom plate and a pipe fitting to be detected for thickness. A gantry is fixedly installed on the upper surface of the bottom plate. A through hole is formed through the top of the gantry. An outer diameter detection ring and an inner diameter detection disc that can move up and down are respectively installed inside the through hole. The outer diameter detection ring is sleeved outside the inner diameter detection disc. A detection hole for detecting the thickness of the pipe fitting is formed between the outer diameter detection ring and the inner diameter detection disc. A support mechanism for supporting the outer diameter detection ring and the inner diameter detection disc is installed on the bottom plate. Two groups of marking mechanisms for marking the surface of the pipe fitting are installed on the top of the gantry.

[0006] As a further solution of the present invention, the support mechanism includes a first spring rod fixedly installed on the upper surface of the bottom plate. The telescopic end of the first spring rod is fixedly installed with the bottom of the inner diameter detection disc. A plurality of second spring rods are fixedly installed equidistantly in the circumferential direction on the upper surface of the bottom plate. The telescopic ends of the plurality of second spring rods are fixedly installed with the bottom of the outer diameter detection ring.

[0007] As a further solution of the present invention, the marking mechanism includes a chute penetrating through the top end of the portal frame. A support frame is slidably installed on the inner wall of the chute. The support frame is of a U-shaped structure. 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. 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 at the telescopic end of the yield spring rod. Trigger components for driving the corresponding support frames to move are respectively installed on the outer diameter detection ring and the inner diameter detection disc. A moving component is installed between the slider and the portal frame.

[0008] As a further solution of the present invention, the trigger component includes a first push rod and a second push rod respectively fixedly installed on the lower surfaces of the outer diameter detection ring and the inner diameter detection disc. Guide columns are fixedly installed on the outer surfaces of one sides at the bottoms of the first push rod and the second push rod. A vertical rod is fixedly installed at the bottom end of the support frame. A moving plate is fixedly installed at the bottom end of the vertical rod. A first guiding groove is penetratingly opened on the outer surface of the moving plate. The guide columns installed at the bottoms of the first push rod and the second push rod are respectively slidably installed on the inner walls of the first guiding grooves opened on the corresponding moving plates.

[0009] As a further solution of the present invention, the moving component includes a portal plate fixedly installed on the top end of the portal frame. A second guiding groove is penetratingly opened at the top end of the portal plate. A moving column is fixedly installed at the top end of the slider. The moving column is slidably installed on the inner wall of the second guiding groove.

[0010] As a further solution of the present invention, a return spring rod is fixedly installed between the support frame and the inner wall of the chute close to one end of the outer diameter detection ring.

[0011] As a further solution of the present invention, two touch switches are fixedly installed on the upper surface of the bottom plate. The two touch switches are respectively installed directly below the first push rod and the second push rod.

[0012] As a further solution of the present invention, a lifting frame is fixedly installed on the upper surface of the bottom 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 bottom plate. The telescopic end of the electric telescopic rod is fixedly installed on the lower surface of the lifting plate.

[0013] The beneficial effects of the present invention are as follows: 1. By respectively supporting the inner diameter detection disc and the outer diameter detection ring with the first spring rod and the second spring rod, and cooperating with the use of the first push rod, the second push rod and the touch switches, it is possible to prevent the inner diameter detection disc and the outer diameter detection ring from being damaged by the pipe fitting to be measured when the thickness of the pipe fitting to be measured is unqualified and continue to move downward. 2. When the inner diameter detection disc or the outer diameter detection ring drives the second push rod or the first push rod to move downward, the guide posts installed at the bottom of the second push rod or the first push rod will slide in the first guide groove, enabling the moving plate to drive the entire support frame in the direction of the pipe fitting through the vertical rod, so that the marking pen installed on the support frame through the yield spring rod contacts the outer side of the pipe fitting, in order to mark the surface of the pipe fitting (the colors of the two relatively arranged marking pens are different, so as to mark different colors respectively when it is detected that the outer diameter or inner diameter of the pipe fitting is unqualified), facilitating subsequent reprocessing of the inner diameter or outer diameter of the defective pipe fitting; 3. When the support frame moves, it will drive the slider to move synchronously. Since the moving column installed at the top of the slider is slidably installed in the second guide groove opened at the top of the portal plate, the slider can drive the marking pen to move horizontally through the yield spring rod while moving in the direction of the pipe fitting, so that the marking pen can draw a more obvious line on the surface of the pipe fitting, facilitating the inspectors to better understand the reason for the unqualified pipe fitting. Description of the Drawings

[0014] Figure 1 It is a schematic diagram of the overall structure of an engine pipe fitting thickness detection jig proposed by the present invention; Figure 2 It is a schematic diagram of the portal frame structure of an engine pipe fitting thickness detection jig proposed by the present invention; Figure 3 It is a schematic diagram of the outer diameter detection ring structure of an engine pipe fitting thickness detection jig proposed by the present invention; Figure 4 It is a schematic diagram of the inner diameter detection disc structure of an engine pipe fitting thickness detection jig proposed by the present invention; Figure 5 It is a schematic diagram of the sectional view of the portal frame of an engine pipe fitting thickness detection jig proposed by the present invention; Figure 6 It is a schematic diagram of the portal plate structure of an engine pipe fitting thickness detection jig proposed by the present invention; Figure 7 is Figure 5 the enlarged view of the structure at A in Figure 8 is Figure 5 the enlarged view of the structure at B in.

[0015] In the figure: 1. bottom 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. yield spring rod; 10. marking 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

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely 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.

[0017] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present 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.

[0018] See attached Figure 1 -Attached Figure 8 A jig for detecting thickness of engine pipe fittings comprises a base plate 1 and a pipe fitting to be detected in thickness. A door frame 2 is fixedly mounted on the upper surface of the base plate 1. A through hole is formed on the top of the door frame 2. An outer diameter detection ring 3 and an inner diameter detection disk 4 that can move up and down are respectively mounted inside the through hole. The outer diameter detection ring 3 is sleeved on the outer side of the inner diameter detection disk 4. A detection hole for detecting thickness of the pipe fitting 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 mounted 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 through the lower surface of the lifting plate 23, the three-jaw chuck 24, the outer diameter detection ring 3 and the inner diameter detection plate 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.

[0019] When in use, the pipe to be inspected is clamped by the three-jaw chuck 24, 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 detection ring 3 and the inner diameter detection 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.

[0020] In this embodiment, the support mechanism includes a first spring rod 5 fixedly installed on the upper surface of the bottom plate 1. The telescopic end of the first spring rod 5 is fixedly installed with the bottom of the inner diameter detection disc 4. A plurality of second spring rods 6 are fixedly installed equidistantly in the circumferential direction on the upper surface of the bottom plate 1. The telescopic ends of the plurality of second spring rods 6 are fixedly installed with the bottom of the outer diameter detection ring 3.

[0021] During use, the inner diameter detection disc 4 and the outer diameter detection ring 3 are supported by the first spring rod 5 and the second spring rod 6 respectively. In combination with the use of the first push rod 18, the second push rod 17 and the touch switch 16, it is possible to prevent continued downward movement when the thickness of the pipe fitting to be measured is unqualified, and to prevent damage to the inner diameter detection disc 4 and the outer diameter detection ring 3 caused by the pipe fitting to be measured.

[0022] In this embodiment, the marking mechanism includes a chute 7 penetrating through the top end of the portal frame 2. A support frame 8 is slidably installed on the inner wall of the chute 7. The support frame 8 is of a U-shaped structure. A guide rod 11 is fixedly installed between the outer surfaces of the opposite sides of the support frame 8. 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. A marking pen 10 is fixedly installed at the telescopic end of the yield spring rod 9. Trigger components for driving the corresponding support frames 8 to move are respectively installed on the outer diameter detection ring 3 and the inner diameter detection disc 4. A moving component is installed between the slider 12 and the portal frame 2. The trigger components include a first push rod 18 and a second push rod 17 respectively fixedly installed on the lower surfaces of the outer diameter detection ring 3 and the inner diameter detection disc 4. Guide columns 19 are fixedly installed on the outer surfaces of one sides of the bottoms of the first push rod 18 and the second push rod 17. A vertical rod 14 is fixedly installed at the bottom end of the support frame 8. A moving plate 26 is fixedly installed at the bottom end of the vertical rod 14. A first guide groove 15 is penetrated through the outer surface of the moving plate 26. The guide columns 19 installed at the bottoms of the first push rod 18 and the second push rod 17 are respectively slidably installed on the inner walls of the first guide grooves 15 opened on the corresponding moving plates 26.

[0023] During use, the yield spring rod 9 can generate a certain contraction when the marking pen 10 contacts the pipe fitting, so that the support frame 8 moves into place, and at the same time, it does not affect the marking operation of the marking pen 10 moving on the surface of the pipe fitting; when the inner diameter detection disc 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 columns 19 installed at the bottoms of the second push rod 17 or the first push rod 18 will slide in the first guide groove 15, so that the moving plate 26 can drive the entire support frame 8 to move towards 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 contacts the outside of the pipe fitting, so as to mark the surface of the pipe fitting (the colors of the two relatively arranged marking pens 10 are different, so as to respectively mark different colors when it is detected that the outer diameter or inner diameter of the pipe fitting is unqualified), which is convenient for subsequent reprocessing of the inner diameter or outer diameter of the defective pipe fitting.

[0024] 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 with the inner wall of the second guide groove 22.

[0025] 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 with 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 marking pen 10 to move horizontally by giving way to the spring rod 9, so that the marking pen 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 fittings are unqualified.

[0026] In this embodiment, a return spring rod 13 is fixedly installed between the support frame 8 and the inner wall of the slide groove 7 at one end close to the outer diameter detection ring 3 .

[0027] 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 always contacting the surface of the pipe fitting and causing confusion in marking.

[0028] In this embodiment, two touch switches 16 are fixedly mounted on the upper surface of the bottom plate 1 , and the two touch switches 16 are respectively mounted directly below the first push rod 18 and the second push rod 17 .

[0029] 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 downwardly 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 up 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 up and resets. This state also indicates that the thickness of this pipe is unqualified and is a defective product.

[0030] 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 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 is a good product; 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 downwardly moving pipe will push the inner diameter detection disk 4 to move downward, so that the second push rod 17 installed at the bottom of the inner diameter detection disk 4 moves 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 make the pipe to be tested move up 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 it 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, so that the first push rod 18 installed at the bottom of the outer diameter detection ring 3 triggers the touch switch 16 until the pipe to be tested moves up and resets. This state also indicates that the thickness of this pipe is unqualified and it is a defective product. 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 toward the pipe fitting as a whole 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, so as to mark the surface of the pipe fitting (the colors of the two marking pens 10 arranged relatively to each other are different, 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 the subsequent reprocessing of the inner diameter or outer diameter of the defective pipe fitting; 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 with 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 marking pen 10 to move horizontally by giving way to the spring rod 9, so that the marking pen 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 fittings are unqualified.

[0031] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description 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 may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An engine pipe fitting thickness detection fixture, comprising a bottom plate (1) and a pipe fitting whose thickness is to be detected, characterized in that, A gantry frame (2) is fixedly installed on the upper surface of the bottom plate (1). A through hole is formed through the top of the gantry frame (2). An outer diameter detection ring (3) and an inner diameter detection disc (4) that can move up and down are respectively installed inside the through hole. The outer diameter detection ring (3) is sleeved outside the inner diameter detection disc (4). A detection hole for detecting the thickness of a pipe fitting is formed between the outer diameter detection ring (3) and the inner diameter detection disc (4). A support mechanism for supporting the outer diameter detection ring (3) and the inner diameter detection disc (4) is installed on the bottom plate (1). Two groups of marking mechanisms for marking the surface of the pipe fitting are installed on the top of the gantry frame (2).

2. The thickness detection fixture for an engine pipe fitting according to claim 1, wherein The support mechanism includes a first spring rod (5) fixedly installed on the upper surface of the bottom plate (1). The telescopic end of the first spring rod (5) is fixedly installed with the bottom of the inner diameter detection disc (4). A plurality of second spring rods (6) are fixedly installed equidistantly in the circumferential direction on the upper surface of the bottom plate (1). The telescopic ends of the plurality of second spring rods (6) are fixedly installed with the bottom of the outer diameter detection ring (3).

3. The thickness detection fixture for an engine pipe fitting according to claim 1, characterized in that The marking mechanism includes a sliding groove (7) formed through the top end of the gantry frame (2). A support frame (8) is slidably installed on the inner wall of the sliding groove (7). The support frame (8) has a U-shaped structure. A guide rod (11) is fixedly installed between the outer surfaces of the opposite sides of the support frame (8). A slider (12) is slidably installed on the outer surface of the guide rod (11). A yielding spring rod (9) is fixedly installed on the outer surface of the slider (12) close to the pipe fitting. A marking pen (10) is fixedly installed at the telescopic end of the yielding spring rod (9). Trigger components for driving the corresponding support frames (8) to move are respectively installed on the outer diameter detection ring (3) and the inner diameter detection disc (4). A moving component is installed between the slider (12) and the gantry frame (2).

4. The thickness detection fixture for an engine pipe fitting according to claim 3, characterized in that The trigger component includes a first push rod (18) and a second push rod (17) respectively fixedly installed on the lower surfaces of the outer diameter detection ring (3) and the inner diameter detection disc (4). Guide columns (19) are fixedly installed on the outer surfaces of one sides of the bottoms of the first push rod (18) and the second push rod (17). A vertical rod (14) is fixedly installed at the bottom end of the support frame (8). A moving plate (26) is fixedly installed at the bottom end of the vertical rod (14). A first guiding groove (15) is formed through the outer surface of the moving plate (26). The guide columns (19) installed at the bottoms of the first push rod (18) and the second push rod (17) are respectively slidably installed on the inner walls of the first guiding grooves (15) formed on the corresponding moving plates (26).

5. The thickness detection fixture for an engine pipe fitting according to claim 3, characterized in that The moving component includes a gantry plate (21) fixedly installed at the top end of the gantry frame (2). A second guiding groove (22) is formed through the top end of the gantry plate (21). A moving column (20) is fixedly installed at the top end of the slider (12). The moving column (20) is slidably installed on the inner wall of the second guiding groove (22).

6. The thickness detection fixture for an engine pipe fitting according to claim 3, characterized in that, A reset spring rod (13) is fixedly installed between the support frame (8) and the inner wall of the sliding groove (7) close to one end of the outer diameter detection ring (3).

7. The thickness detection fixture for an engine pipe fitting according to claim 4, characterized in that, Two touch switches (16) are fixedly installed on the upper surface of the bottom plate (1), and the two touch switches (16) are respectively installed directly below the first push rod (18) and the second push rod (17).

8. The thickness detection fixture for an engine pipe fitting according to claim 1, characterized in that, A lifting frame (27) is fixedly installed on the upper surface of the bottom 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 fitting is fixedly installed through the lower surface of the lifting plate (23). An electric telescopic rod (25) is fixedly installed on the upper surface of the bottom plate (1), and the telescopic end of the electric telescopic rod (25) is fixedly installed on the lower surface of the lifting plate (23).

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