Device and method for measuring size of exhaust manifold

Abstract

The invention belongs to the technical field of detection equipment, and discloses an exhaust manifold size measuring device and method.The device comprises a base station, a locking mechanism and a measuring mechanism, the base station is provided with a tray used for supporting a straight pipe part of an exhaust manifold, and the locking mechanism is arranged on the base station and used for locking the exhaust manifold located on the tray; the measuring mechanism comprises a first moving part and an angle measuring assembly arranged on the first moving part, the angle measuring assembly comprises an angle measuring part and two measuring rods, and the two measuring rods are pivoted. According to the exhaust manifold size measuring device provided by the invention, the first moving piece drives the angle measuring assembly to move, so that the two measuring rods are sequentially attached to the end faces of the two bent pipe parts of the exhaust manifold, and the angle measuring piece measures the included angle between the two measuring rods; the included angle between the two bent pipe parts in the axial direction of the straight pipe part is obtained according to the included angle between the two measuring rods, the device is simple in structure, and the method is convenient to operate.

Description

Technical Field

[0001] The present invention relates to the technical field of detection devices, and in particular, to a device and method for measuring the size of an exhaust manifold. Background Art

[0002] The intake and exhaust system is one of the five major systems of a diesel engine and is an important part of the diesel engine. Its main function is to discharge the exhaust gas of the diesel engine and fill the cylinder with as much fresh air as possible. In the intake and exhaust system, if there are quality problems such as leakage in the exhaust manifold, it will lead to a reduction in the fresh air filled into the cylinder of the diesel engine, resulting in problems such as poor combustion state of the diesel engine, abnormal increase in exhaust temperature, and decrease in output power. Moreover, the temperature of the exhaust gas in the exhaust manifold can generally reach 400°C - 600°C. Once leakage occurs, the high-temperature exhaust gas will have a negative impact on other surrounding components.

[0003] When the diesel engine is running, the exhaust gas is transported through the exhaust manifold to the inlet of the turbocharger turbine, which drives the turbocharger to operate, and then through the turbocharger, more fresh air is filled into each cylinder of the diesel engine. In the prior art, the exhaust manifold is a casting, and its finished product is processed on the basis of the casting blank of the exhaust manifold. Among them, as shown in Figures 1 to 2 Exhaust manifold 100 includes a straight pipe portion 110 and two elbow portions 120 integrally and communicatively provided on the straight pipe portion 110. The ports of the two elbow portions 120 are exhaust gas inlets and are connected to the exhaust branches of each cylinder of the diesel engine. The straight pipe portion 110 is an exhaust gas outlet and is connected to other exhaust manifolds 100.

[0004] Observing the specific structure diagram of the exhaust manifold 100, it can be seen that the two elbow portions 120 are arranged at intervals along the axial direction of the straight pipe portion 110, and the two elbow portions 120 are arranged at an angle along the axial direction of the straight pipe portion 110. Due to the interval arrangement of the two elbow portions 120, conventional measuring tools cannot quickly and effectively measure the angle between the two elbow portions 120, resulting in very troublesome finished product inspection work for the exhaust manifold 100 and difficult batch detection. If there are omissions in size detection and the exhaust manifold 100 with unqualified dimensions is put into use for installation, it will lead to problems such as poor combustion state of the diesel engine, abnormal increase in exhaust temperature, and decrease in the output power of the diesel engine. Summary of the Invention

[0005] The purpose of the present invention is to provide a device and method for measuring the size of an exhaust manifold, which has a simple structure and is easy to operate, and can effectively measure the angle between the two elbow portions of the exhaust manifold along the axial direction of the straight pipe portion.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] An exhaust manifold size measuring device includes:

[0008] A base, on which there is a tray for supporting the straight pipe portion of the exhaust manifold.

[0009] A locking mechanism, provided on the base, for locking the exhaust manifold located on the tray.

[0010] A measuring mechanism, including a first moving member and an angle measuring assembly provided on the first moving member. The angle measuring assembly includes an angle measuring member and two measuring rods, and the two measuring rods are pivotally connected.

[0011] The first moving member drives the angle measuring assembly to move, so that the two measuring rods are sequentially attached to the end faces of the two elbow portions of the exhaust manifold, and the angle measuring member is used to measure the included angle between the two measuring rods.

[0012] Preferably, the first moving member includes a first moving column and a first moving block. The base is provided with a first chute along a first direction, the first moving column is slidably connected to the first chute, the first moving column is provided with a second chute along a second direction, the first moving block is slidably connected to the second chute, and the two measuring rods are pivotally connected by a pivot shaft, and the pivot shaft is provided on the first moving block.

[0013] Preferably, a first scale is provided on the base along the extension direction of the first chute, and the first scale is used to measure the distance between the axis of the pivot shaft and the axis of the tray.

[0014] Preferably, the angle measuring member includes a protractor scale fixed on the pivot shaft, and a second scale is provided on the protractor scale, and the second scale is used to measure the included angle between the two measuring rods.

[0015] Preferably, the locking mechanism includes a second moving member and a locking plate provided on the second moving member. The locking plate is connected with a locking bolt. The locking plate moves relative to the base through the second moving member, and a threaded hole is provided on the outer side wall of the straight pipe portion, and the locking bolt is used for threaded connection with the threaded hole.

[0016] Preferably, the second moving member includes a second moving column and a second moving block. The base is provided with a third chute along a third direction, the second moving column is slidably connected to the third chute, the second moving column is provided with a fourth chute along a second direction, the second moving block is slidably connected to the fourth chute, and the locking plate is provided on the second moving block.

[0017] Preferably, a positioning groove is provided on the base, the tray is arranged in the positioning groove, and the groove wall of the positioning groove can be attached to the outer side wall of the straight pipe portion.

[0018] Preferably, it further includes a lifting driving member disposed on the base, the lifting driving member is connected to the tray, and the lifting driving member is used to drive the tray to lift in the positioning groove.

[0019] Preferably, the lifting driving member includes a driving cylinder, the cylinder body of the driving cylinder is fixed to the base, and the cylinder rod of the driving cylinder is connected to the tray.

[0020] The present invention also provides a method for sizing an exhaust manifold, which is convenient to operate and can effectively measure the included angle between two elbow portions of the exhaust manifold.

[0021] A method for sizing an exhaust manifold, applying the exhaust manifold sizing device described in any one of the above, the exhaust manifold sizing method includes the following steps:

[0022] S100: Support one end face of the straight pipe portion of the exhaust manifold on the tray;

[0023] S200: Adjust the position of the exhaust manifold so that the elbow portion of the exhaust manifold faces the measuring mechanism;

[0024] S300: Lock the exhaust manifold on the tray through the locking mechanism;

[0025] S400: The first moving member drives the angle measuring assembly to move so that the two measuring rods are sequentially attached to the end faces of the two elbow portions;

[0026] S500: The angle measuring member measures the included angle between the two measuring rods and obtains the included angle between the two elbow portions along the axial direction of the straight pipe portion according to the included angle between the two measuring rods.

[0027] Beneficial effects:

[0028] The exhaust manifold size measuring device provided by the present invention has a simple structure and is convenient to operate. A tray is arranged on the base to support the straight pipe part of the exhaust manifold, and a locking mechanism is used to lock the exhaust manifold on the tray. The measuring mechanism includes a first moving part and an angle measuring component. The angle measuring component includes an angle measuring piece and two measuring rods. The two measuring rods are pivotally arranged, and the angle measuring piece is used to measure the included angle between the two measuring rods. In the axial direction of the straight pipe part, the two elbow parts are arranged at an included angle. When measuring the included angle between the two elbow parts, one end face of the straight pipe part of the exhaust manifold is supported on the tray, and then the position of the exhaust manifold is adjusted so that the elbow parts of the exhaust manifold face the measuring mechanism. After the position adjustment is completed, the locking mechanism locks the exhaust manifold on the tray to prevent the exhaust manifold from moving. Next, the first moving part drives the angle measuring component to move so that the two measuring rods respectively correspond to the two elbow parts. The whole angle measuring component moves along the axial direction of the straight pipe part to adjust the included angle between the two measuring rods so that the two measuring rods can sequentially fit the end faces of the two elbow parts. When both measuring rods are in contact with the corresponding end faces of the elbow parts, the angle measuring piece measures the included angle between the two measuring rods. According to geometric principles, this included angle is complementary to the included angle between the two elbow parts in the axial direction of the straight pipe part. Therefore, the included angle between the two elbow parts in the axial direction of the straight pipe part is finally obtained based on the supplementary angle of the included angle data of the two measuring rods. Description of the Drawings

[0029] Figure 1 is a schematic structural diagram of an exhaust manifold from a perspective in the prior art;

[0030] Figure 2 is a schematic structural diagram of the exhaust manifold from another perspective in the prior art;

[0031] Figure 3 is a schematic structural diagram of the exhaust manifold size measuring device provided by the present invention;

[0032] Figure 4 is an exploded schematic diagram of the exhaust manifold size measuring device provided by the present invention;

[0033] Figure 5 is a schematic structural diagram of the exhaust manifold size measuring device provided by the present invention when installing the exhaust manifold;

[0034] Figure 6 is a top view schematic diagram of the exhaust manifold size measuring device provided by the present invention when installing the exhaust manifold;

[0035] Figure 7 is a schematic flowchart of the exhaust manifold size measuring method provided by the present invention.

[0036] In the figure:

[0037] 100. Exhaust manifold; 110. Straight pipe part; 1101. Threaded hole; 120. Elbow part;

[0038] 1. Base; 11. Tray; 111. Lifting head; 12. First chute; 13. First scale; 14. Third chute; 15. Positioning groove; 151. Perforation; 16. Driving cylinder; 17. Leg

[0039] 2. Locking mechanism; 21. Second moving member; 211. Second moving column; 2111. Fourth chute; 212. Second moving block; 22. Locking plate; 23. Locking bolt

[0040] 3. Measuring mechanism; 31. First moving member; 311. First moving column; 3111. Second chute; 312. First moving block; 32. Angle measuring assembly; 321. Angle measuring member; 3211. Second scale; 322. Measuring rod; 323. Pivoting shaft Detailed implementation manners

[0041] The present invention will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. Additionally, it should be noted that for the sake of description, only the parts related to the present invention rather than all the structures are shown in the drawings.

[0042] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "above and over", and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher horizontal height than the second feature. The first feature being "below", "below and under", and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature is at a lower horizontal height than the second feature.

[0044] In the description of this embodiment, the terms "upper", "lower", "right", and other orientation or positional relationships are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operations, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0045] This embodiment provides an exhaust manifold size measuring device. Referring to Figures 1 to 6 as shown, the exhaust manifold size measuring device includes a base 1, a locking mechanism 2, and a measuring mechanism 3. The base 1 is provided with a tray 11 for supporting the straight pipe portion 110 of the exhaust manifold 100. The locking mechanism 2 is arranged on the base 1 and is used to lock the exhaust manifold 100 located on the tray 11. The measuring mechanism 3 includes a first moving member 31 and an angle measuring assembly 32 arranged on the first moving member 31. The angle measuring assembly 32 includes an angle measuring member 321 and two measuring rods 322, and the two measuring rods 322 are pivotally connected. The first moving member 31 drives the angle measuring assembly 32 to move, so that the two measuring rods 322 are sequentially attached to the end faces of the two elbow portions 120 of the exhaust manifold 100, and the angle measuring member 321 is used to measure the included angle between the two measuring rods 322.

[0046] In this embodiment, when measuring the included angle between the two elbow portions 120, one end face of the straight pipe portion 110 of the exhaust manifold 100 is supported on the tray 11, and then the position of the exhaust manifold 100 is adjusted so that the elbow portions 120 of the exhaust manifold 100 face the measuring mechanism 3. After the position adjustment is completed, the locking mechanism 2 locks the exhaust manifold 100 on the tray 11 to prevent the exhaust manifold 100 from moving. Next, the first moving member 31 drives the angle measuring assembly 32 to move, so that the two measuring rods 322 respectively correspond to the two elbow portions 120, and the whole angle measuring assembly 32 moves along the axial direction of the straight pipe portion 110 to adjust the included angle between the two measuring rods 322, so that the two measuring rods 322 can be sequentially attached to the end faces of the two elbow portions 120. When both measuring rods 322 are attached to the corresponding end faces of the elbow portions 120, the angle measuring member 321 measures the included angle between the two measuring rods 322. According to the geometric principle, this included angle is complementary to the included angle between the two elbow portions 120 along the axial direction of the straight pipe portion 110. Therefore, the included angle between the two elbow portions 120 along the axial direction of the straight pipe portion 110 is finally obtained based on the supplementary angle of the included angle data of the two measuring rods 322.

[0047] In this embodiment, the first moving member 31 includes a first moving column 311 and a first moving block 312. The base 1 is provided with a first sliding groove 12 in the first direction. The first moving column 311 is slidably connected to the first sliding groove 12. The first moving column 311 is provided with a second sliding groove 3111 in the second direction. The first moving block 312 is slidably connected to the second sliding groove 3111. The two measuring rods 322 are pivotally arranged through a pivot shaft 323, and the pivot shaft 323 is arranged on the first moving block 312. Specifically, the tray 11 is set to be cylindrical. Specifically refer to Figure 2 , Figure 5 As shown, the a direction in the figure is the first direction. The first direction is a radial direction of the straight pipe portion 110 when the exhaust manifold 100 is supported on the tray 11, and is also a radial direction of the tray 11 in this embodiment. The c direction in the figure is the second direction. The second direction is the axial direction of the straight pipe portion 110 when the exhaust manifold 100 is supported on the tray 11, and is also the axial direction of the tray 11 in this embodiment. Since the end face of the straight pipe portion 110 is supported on the tray 11, when placing the tray 11 to hold the exhaust manifold 100, the a direction is also a radial direction of the straight pipe portion 110, and the c direction is also the axial direction of the straight pipe portion 110. Specifically, the first sliding groove 12 is opened along the radial direction of the tray 11. The first moving column 311 slides in the first sliding groove 12 and can adjust the distance from the straight pipe portion 110 along the radial direction of the straight pipe portion 110. The second sliding groove 3111 is opened along the axial direction of the tray 11. The first moving block 312 slides in the second sliding groove 3111. The first moving block 312 can move along the axial direction of the straight pipe portion 110, which corresponds to the lifting action of the first moving block 312 in the figure, and further realizes the lifting adjustment of the two measuring rods 322 through the pivot shaft 323.

[0048] Specifically, the first moving column 311 is provided with a first sliding portion, and the first sliding portion is slidably connected to the first sliding groove 12. The first sliding portion is set to be a wedge-shaped structure, and the first sliding groove 12 is correspondingly set to be a wedge-shaped groove. Such a setting can prevent the first sliding portion from disengaging from the first sliding groove 12 and ensure reliable and stable sliding. The first moving block 312 is provided with two sliding portions, and the second sliding portion is slidably connected to the second sliding groove 3111. The second sliding portion is set to be a wedge-shaped structure, and the second sliding groove 3111 is correspondingly set to be a wedge-shaped groove. Such a setting can prevent the second sliding portion from disengaging from the second sliding groove 3111 and ensure reliable and stable sliding.

[0049] Optionally, between the first moving column 311 and the first sliding groove 12 and between the first moving block 312 and the second sliding groove 3111, the relative positions of each other can be automatically adjusted by setting components such as a servo module and a telescopic rod.

[0050] Specifically in this embodiment, the angle measuring member 321 includes a protractor scale fixed to the pivot shaft 323. A second scale 3211 is provided on the protractor scale, and the second scale 3211 is used to measure the included angle between the two measuring rods 322. Refer to Figure 6 As shown, the protractor scale is located between the two measuring rods 322, and the protractor scale is set as a sector and coaxially arranged with the pivot shaft 323. When the two measuring rods 322 form an included angle, the two measuring rods 322 can respectively correspond to two scale values on the second scale 3211. For example Figure 6 in the left measuring rod 322, the corresponding second scale 3211 is 30°, and in the right measuring rod 322, the corresponding second scale 3211 is 150°. At this time, the included angle between the two measuring rods 322 is 120°.

[0051] In some other alternative embodiments, the angle measuring member 321 may further include an angle sensor provided on the measuring rod 322. Specifically, a display screen may be provided on the measuring rod 322, and the display screen is communicatively connected to the angle sensor. The angle sensor can measure the included angle between the two measuring rods 322 and display it on the display screen.

[0052] In this embodiment, a first scale 13 is provided on the base 1 along the extension direction of the first chute 12, and the first scale 13 is used to measure the distance between the axis of the pivot shaft 323 and the axis of the tray 11. Specifically, when the straight pipe portion 110 of the exhaust manifold 100 is supported on the tray 11, the straight pipe portion 110 and the tray 11 are coaxially arranged. By providing the first scale 13, the distance between the axis of the pivot shaft 323 and the axis of the tray 11 can be measured. There is a gap between the axis of the pivot shaft 323 and the outermost side of the elbow portion 120. Using a measuring tool such as a measuring ruler to obtain this gap, and subtracting the gap from the above-mentioned distance, the distance between the outermost side of the elbow portion 120 and the axis of the straight pipe portion 110 can be obtained.

[0053] In this embodiment, the locking mechanism 2 includes a second moving member 21 and a locking plate 22 provided on the second moving member 21. The locking plate 22 is connected with a locking bolt 23. The locking plate 22 moves relative to the base 1 through the second moving member 21. A threaded hole 1101 is provided on the outer side wall of the straight pipe portion 110, and the locking bolt 23 is used for threaded connection with the threaded hole 1101. Specifically, after the position of the exhaust manifold 100 is adjusted, the locking plate 22 is moved through the second moving member 21 so that the locking bolt 23 can be in a position directly facing the threaded hole 1101. Then, the locking bolt 23 is screwed, so that the locking bolt 23 is screwed into the threaded hole 1101, thereby effectively locking the straight pipe portion 110.

[0054] Further, the second moving member 21 includes a second moving column 211 and a second moving block 212. The base 1 is provided with a third sliding groove 14 in the third direction. The second moving column 211 is slidably connected to the third sliding groove 14. The second moving column 211 is provided with a fourth sliding groove 2111 in the second direction. The second moving block 212 is slidably connected to the fourth sliding groove 2111. The locking plate 22 is arranged on the second moving block 212. Specifically, refer to Figure 2 , Figure 5 As shown, the b direction in the figure is the third direction. The third direction is another radial direction of the straight pipe portion 110 when the exhaust manifold 100 is supported on the tray 11. In this embodiment, it is also another radial direction of the tray 11. The second sliding groove 3111 extends along this direction. The third sliding groove 14 is opened along the radial direction of the tray 11. The second moving column 211 slides in the third sliding groove 14 and can adjust the distance from the straight pipe portion 110 along the radial direction of the straight pipe portion 110, so that the second moving column 211 approaches or moves away from the straight pipe portion 110, and further the locking plate 22 approaches or moves away from the straight pipe portion 110. The fourth sliding groove 2111 is opened along the axial direction of the tray 11. The second moving block 212 slides in the fourth sliding groove 2111. The second moving block 212 can move along the axial direction of the straight pipe portion 110, which is shown as the lifting movement of the second moving block 212 in the figure, and further realizes the lifting adjustment of the locking plate 22.

[0055] Specifically, the second moving column 211 is provided with a third sliding portion. The third sliding portion is slidably connected to the third sliding groove 14. The third sliding portion is arranged in a wedge shape, and the third sliding groove 14 is correspondingly arranged as a wedge groove. This setting can prevent the third sliding portion from disengaging from the third sliding groove 14 and ensure reliable and stable sliding. The second moving block 212 is provided with a fourth sliding portion. The fourth sliding portion is slidably connected to the fourth sliding groove 2111. The fourth sliding portion is arranged in a wedge shape, and the fourth sliding groove 2111 is correspondingly arranged as a wedge groove. This setting can prevent the fourth sliding portion from disengaging from the fourth sliding groove 2111 and ensure reliable and stable sliding.

[0056] Optionally, between the second moving column 211 and the third sliding groove 14 and between the second moving block 212 and the fourth sliding groove 2111, the relative positions of each other can be automatically adjusted by setting components such as servo modules and telescopic rods.

[0057] In this embodiment, the base 1 is provided with a positioning groove 15. The tray 11 is arranged in the positioning groove 15. The groove wall of the positioning groove 15 can be attached to the outer side wall of the straight pipe portion 110. Specifically, the setting of the positioning groove 15 can provide positioning for the support of the straight pipe portion 110. Specifically, the outer peripheral wall of the tray 11 is also arranged to be attached to the positioning groove 15, and the installation of the tray 11 is kept reliable and stable.

[0058] Further, the exhaust manifold size measuring device further includes a lifting driving member disposed on the base 1. The lifting driving member is connected to the tray 11 and is used to drive the tray 11 to lift in the positioning groove 15. Specifically, since the groove wall of the positioning groove 15 fits against the outer side wall of the straight pipe portion 110, the method of manually carrying the exhaust manifold 100 is inefficient, and the groove wall of the positioning groove 15 and the outer side wall of the straight pipe portion 110 may be worn and scratched due to improper operation, and in severe cases, the outer side wall of the straight pipe portion 110 may be damaged. By providing the lifting driving member, manpower consumption can be saved, the automation degree of the device can be improved, and the tray 11 is lifted strictly along the axis of the tray 11 to avoid the occurrence of wear and scratching between the outer side wall of the straight pipe portion 110 and the groove wall of the positioning groove 15.

[0059] Specifically, the lifting driving member includes a driving cylinder 16. The cylinder body of the driving cylinder 16 is fixed to the base 1, and the cylinder rod of the driving cylinder 16 is connected to the tray 11. Exemplarily, the cylinder body of the driving cylinder 16 is fixed to the lower end surface of the base 1. A through hole 151 is opened at the bottom of the positioning groove 15. A jacking head 111 is provided on the lower end surface of the tray 11. The jacking head 111 extends into the through hole 151 and is slidably connected to the through hole 151. The cylinder rod of the driving cylinder 16 extends into the through hole 151 and can abut against the jacking head 111, thereby realizing the jacking operation of the tray 11. Fixing the cylinder body of the driving cylinder 16 to the lower end surface of the base 1 reduces the occupation of the space above the base 1 and reasonably plans the layout space.

[0060] In addition to being set as the driving cylinder 16, the lifting driving member can also be set as components such as an electric push rod and a linear servo module.

[0061] In this embodiment, the base 1 is provided with a plurality of legs 17, and the plurality of legs 17 are used to reliably and stably support the base 1 on the ground or in the experimental site.

[0062] Refer to Figures 1 to 7 As shown, this embodiment also provides an exhaust manifold size measuring method. The exhaust manifold size measuring method applies the above exhaust manifold size measuring device. The exhaust manifold size measuring method includes the following steps:

[0063] S100. Support one end face of the straight pipe portion 110 of the exhaust manifold 100 on the tray 11;

[0064] S200. Adjust the position of the exhaust manifold 100 so that the bent pipe portion 120 of the exhaust manifold 100 faces the measuring mechanism 3;

[0065] S300. Lock the exhaust manifold 100 on the tray 11 through the locking mechanism 2;

[0066] S400. The first moving member 31 drives the angle measuring assembly 32 to move, so that the two measuring rods 322 are sequentially attached to the end faces of the two bent pipe portions 120;

[0067] In S500, the angle measuring member 321 measures the included angle between the two measuring rods 322, and obtains the included angle between the two bent pipe portions 120 in the axial direction of the straight pipe portion 110 according to the included angle between the two measuring rods 322.

[0068] In step S100, before the straight pipe portion 110 is supported on the tray 11, the lifting driving member controls the tray 11 to rise and extend out of the positioning groove 15, and then the straight pipe portion 110 is coaxially placed on the tray 11. Subsequently, the lifting driving member controls the tray 11 to descend and retract into the positioning groove 15, so that the supporting end surface of the straight pipe portion 110 enters the positioning groove 15, and the groove wall of the positioning groove 15 is kept in contact with the outer side wall of the straight pipe portion 110.

[0069] Subsequently, step S200 is performed. Adjusting the position of the exhaust main pipe 100 specifically means rotating the straight pipe portion 110 on the tray 11 so that the two bent pipe portions 120 respectively correspond to the two measuring rods 322 of the angle measuring member 321, ensuring that the two measuring rods 322 can successively contact the end surfaces of the two bent pipe portions 120 in the subsequent steps.

[0070] Subsequently, step S300 is performed. Adjusting the positions of the second moving column 211 and the second moving block 212 specifically means controlling the second moving column 211 to be slidably connected to the third chute 14, and the second moving block 212 to be slidably connected to the fourth chute 2111, and adjusting the position of the locking plate 22, so that the locking bolt 23 on the locking plate 22 can be in a position directly opposite to the threaded hole 1101. Subsequently, the locking bolt 23 is screwed, so that the locking bolt 23 is screwed into the threaded hole 1101, and further the straight pipe portion 110 is reliably and stably locked on the tray 11. The lower part of the straight pipe portion 110 is effectively positioned through the positioning groove 15 to prevent the exhaust main pipe 100 from moving.

[0071] Subsequently, step S400 is performed. Adjusting the positions of the first moving column 311 and the first moving block 312. Specifically, controlling the first moving column 311 to be slidably connected to the first chute 12, and adjusting the distance between the first moving column 311 and the straight pipe portion 110 in the radial direction of the straight pipe portion 110; controlling the first moving block 312 to be slidably connected to the second chute 3111, and the first moving block 312 can be lifted and lowered in the axial direction of the straight pipe portion 110, so as to realize the lifting adjustment of the two measuring rods 322. Exemplarily, refer to Figure 5As shown, taking the example of the angular measuring member 321 moving axially downward along the straight pipe portion 110, before the measurement starts, the first moving block 312 is controlled to slide upward in the second chute 3111, so that the angular measurement assembly 32 as a whole moves above the two elbow portions 120. Subsequently, the first moving block 312 moves downward relative to the second chute 3111 to control the angular measuring member 321 to gradually move downward. During the process, the measuring rod 322 on the left side in the figure first moves to a position corresponding to the end face of the upper elbow portion 120, and the first moving block 312 stops moving, so that the angular measuring member 321 pauses moving. The first moving column 311 is controlled to slide in the first chute 12 to adjust the distance between the angular measurement assembly 32 and the exhaust main pipe 100. At the same time, the left measuring rod 322 is rotated to adjust the angle of the left measuring rod 322. The adjustment of the first moving column 311 and the left measuring rod 322 is carried out simultaneously until the left measuring rod 322 fits the position of the end face of the upper elbow portion 120. Subsequently, the left measuring rod 322 is no longer moved, and the first moving block 312 continues to move downward relative to the second chute 3111, and the angular measuring member 321 is continuously controlled to move downward until the measuring rod 322 on the right side in the figure moves to a position corresponding to the end face of the lower elbow portion 120, and the first moving block 312 stops moving, so that the angular measurement assembly 32 stops moving. At this time, the distance between the angular measurement assembly 32 and the exhaust main pipe 100 needs to be adjusted again, and at the same time, the right measuring rod 322 is rotated to adjust the angle of the right measuring rod 322. The adjustment of the first moving column 311 and the right measuring rod 322 is carried out simultaneously until the right measuring rod 322 fits the position of the end face of the lower elbow portion 120.

[0072] In some alternative embodiments, after the left measuring rod 322 completes the measurement, the first moving column 311 can slide backward a short distance, appropriately away from the upper elbow portion 120, to avoid accidental contact and other situations after the left measuring rod 322 completes the measurement, which may affect the measurement accuracy. When measuring the lower elbow portion 120, the first moving column 311 and the right measuring rod 322 can be adjusted simultaneously.

[0073] In some alternative embodiments, during the process of the angle measuring member 321 moving gradually from top to bottom, there may be a situation where the angle measuring member 321 moves to a position corresponding to the upper and lower elbow portions 120 simultaneously, that is, the left measuring rod 322 moves to correspond to the end face of the upper elbow portion 120, and the right measuring rod 322 moves to correspond to the end face of the lower elbow portion 120. At this time, by adjusting the distance between the angle measuring assembly 32 and the exhaust manifold 100 and simultaneously rotating the left and right measuring rods 322 to adjust the angles of the left and right measuring rods 322, it is also possible to make the right measuring rod 322 fit the end face of the lower elbow portion 120 while the left measuring rod 322 fits the end face of the upper elbow portion 120. However, it is worth mentioning that this situation applies to the case where the exhaust manifold 100 has a high machining accuracy and a small machining error.

[0074] During the manufacturing process of the exhaust elbow 100, the exhaust elbow 100 is mostly an integrally cast part. Affected by indicators such as usage requirements, manufacturing processes, processing costs, and accuracy requirements, there may be a certain error in the surface flatness. When the angle measuring member 321 moves to a position corresponding to the upper and lower elbow portions 120 simultaneously, it may not be possible to make the left and right measuring rods 322 fit the end faces of the corresponding elbow portions 120 simultaneously, affecting the accuracy of the measurement results. Therefore, by moving twice, the method of making the left measuring rod 322 fit the end face of the upper elbow portion 120 first and the right measuring rod 322 fit the end face of the lower elbow portion 120 later to achieve two measurements has a higher accuracy and effectively ensures the reliability and accuracy of the measurement.

[0075] Subsequently, step S500 is performed. The two measuring rods 322 can respectively correspond to two scale values on the second scale 3211. For example, Figure 6 the second scale 3211 corresponding to the left measuring rod 322 in [example] is 30°, and the second scale 3211 corresponding to the right measuring rod 322 is 150°. At this time, the included angle between the two measuring rods 322 is 120°, that is, the angle measuring member 321 measures the included angle between the two measuring rods 322 as 120°. According to geometric principles, this included angle is complementary to the included angle between the two elbow portions 120 in the axial direction of the straight pipe portion 110. Therefore, the included angle between the two elbow portions 120 in the axial direction of the straight pipe portion 110 is finally obtained as 60° based on the supplementary angle of the included angle data of the two measuring rods 322.

[0076] In addition, in the measuring step, a first scale 13 is provided in the extending direction of the first chute 12. The distance between the axis of the pivot shaft 323 and the axis of the tray 11 can be measured through the first scale 13. The distance between the axis of the pivot shaft 323 and the outermost side of the elbow portion 120 is measured by using a measuring tool such as a measuring ruler, and the distance between the outermost side of the elbow portion 120 and the axis of the straight pipe portion 110 is obtained by subtracting the latter distance from the former distance.

[0077] After the completion of step S500, the lifting drive member controls the tray 11 to rise again and extend out of the positioning groove 15, so that the straight pipe portion 110 extends out of the positioning groove 15, facilitating the subsequent handling of the exhaust manifold 100 by the operator, avoiding wear and abrasion between the groove wall of the positioning groove 15 and the outer wall of the straight pipe portion 110, and saving labor consumption.

[0078] Obviously, the above-mentioned embodiments of the present invention are merely examples for clearly explaining the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. An exhaust manifold size measuring device, characterized in that, Comprising: A base (1) provided with a tray (11) on the base (1) for supporting the straight pipe portion (110) of the exhaust manifold (100); A locking mechanism (2) provided on the base (1) for locking the exhaust manifold (100) located on the tray (11); A measuring mechanism (3) including a first moving member (31) and an angle measuring assembly (32) provided on the first moving member (31), the angle measuring assembly (32) including an angle measuring member (321) and two measuring rods (322), the two measuring rods (322) being pivotally connected; The first moving member (31) drives the angle measuring assembly (32) to move so that the two measuring rods (322) are sequentially attached to the end faces of the two elbow portions (120) of the exhaust manifold (100), and the angle measuring member (321) is used to measure the included angle between the two measuring rods (322).

2. The exhaust manifold size measuring device according to claim 1, characterized in that The first moving member (31) includes a first moving column (311) and a first moving block (312), the base (1) is provided with a first sliding groove (12) along a first direction, the first moving column (311) is slidably connected to the first sliding groove (12), the first moving column (311) is provided with a second sliding groove (3111) along a second direction, the first moving block (312) is slidably connected to the second sliding groove (3111), the two measuring rods (322) are pivotally connected through a pivot shaft (323), and the pivot shaft (323) is provided on the first moving block (312).

3. The exhaust manifold size measuring device according to claim 2, wherein A first scale (13) is provided on the base (1) along the extending direction of the first sliding groove (12), and the first scale (13) is used to measure the distance between the axis of the pivot shaft (323) and the axis of the tray (11).

4. The exhaust manifold size measuring device according to claim 2, characterized in that, The angle measuring member (321) includes a protractor scale fixed to the pivot shaft (323), and a second scale (3211) is provided on the protractor scale, and the second scale (3211) is used to measure the included angle between the two measuring rods (322).

5. The exhaust manifold size measuring device according to claim 1, characterized in that, The locking mechanism (2) includes a second moving member (21) and a locking plate (22) provided on the second moving member (21), the locking plate (22) is connected with a locking bolt (23), the locking plate (22) moves relative to the base (1) through the second moving member (21), and a threaded hole (1101) is provided on the outer side wall of the straight pipe portion (110), and the locking bolt (23) is used for threaded connection with the threaded hole (1101).

6. The exhaust manifold size measuring device according to claim 5, characterized in that The second moving member (21) includes a second moving column (211) and a second moving block (212), the base (1) is provided with a third sliding groove (14) along a third direction, the second moving column (211) is slidably connected to the third sliding groove (14), the second moving column (211) is provided with a fourth sliding groove (2111) along a second direction, the second moving block (212) is slidably connected to the fourth sliding groove (2111), and the locking plate (22) is provided on the second moving block (212).

7. The exhaust manifold size measuring device according to claim 1, characterized in that, A positioning groove (15) is provided on the base (1), the tray (11) is arranged in the positioning groove (15), and the groove wall of the positioning groove (15) can be attached to the outer side wall of the straight pipe portion (110).

8. The exhaust manifold size measuring device according to claim 7, characterized in that, It further includes a lifting driving member arranged on the base (1), the lifting driving member is connected to the tray (11), and the lifting driving member is used to drive the tray (11) to lift in the positioning groove (15).

9. The exhaust manifold size measuring device according to claim 8, characterized in that, The lifting driving member includes a driving cylinder (16), the cylinder body of the driving cylinder (16) is fixed to the base (1), and the cylinder rod of the driving cylinder (16) is connected to the tray (11).

10. A method for measuring the size of an exhaust manifold, characterized in that, Applying the exhaust manifold size measuring device according to any one of claims 1-9, the exhaust manifold size measuring method includes the following steps: S100: Support one end face of the straight pipe portion (110) of the exhaust manifold (100) on the tray (11). S200: Adjust the position of the exhaust manifold (100) so that the bent pipe portion (120) of the exhaust manifold (100) faces the measuring mechanism (3). S300: Lock the exhaust manifold (100) on the tray (11) through the locking mechanism (2). S400: The first moving member (31) drives the angle measuring assembly (32) to move so that the two measuring rods (322) are sequentially attached to the end faces of the two bent pipe portions (120). S500: The angle measuring member (321) measures the included angle between the two measuring rods (322), and obtains the included angle between the two bent pipe portions (120) in the axial direction of the straight pipe portion (110) according to the included angle between the two measuring rods (322).

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