Diesel engine starting air distributor distribution disc angular clearance measuring tool

Abstract

The utility model relates to an angular clearance measuring tool for a distribution disc of a diesel engine starting air distributor. The angular clearance measuring tool comprises an adapter and a dial indicator, wherein the adapter is detachably arranged at the end part, far away from a main body of the starting air distributor, of the distribution disc; measuring positions corresponding to the circumference defined by all the distribution holes of the distribution disc are formed on the adapter; the dial indicator comprises a mounting seat detachably arranged on the main body and a meter body arranged on the measuring position, and the meter body is connected with the mounting seat. The relative rotation reading angle between the distribution disc and the main body can be converted into a distance value for measurement, the structure is simple, and the measurement process is simple and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of diesel engine starting air distributors, in particular to an angular clearance measuring tool for a distribution plate of a diesel engine starting air distributor. Background Art

[0002] The diesel engine of the nuclear power unit needs to be inspected regularly to ensure the stability and safety of operation. The starting air distributor controls the air intake timing of the starting valves of each cylinder of the diesel engine so as to adjust the ignition sequence of the diesel engine. It is an important component of the emergency diesel engine. The starting air distributor includes a main body and a distribution plate arranged on the main body. It controls the opening of the main starting valve of each cylinder by changing the rotation angle, and finally controls the ignition sequence of the diesel engine. The main body has seven evenly distributed circular holes, which are connected to the seven cylinders respectively. Figure 1 As shown, the distribution plate has seven distribution holes, which correspond to the seven circular holes respectively, and is installed on the shaft system. The driving end is connected to the diesel engine gear system for driving. In order to ensure the correct distribution of the intake volume of each cylinder to open the starting valve of each cylinder, it is required that after the distribution plate is assembled on the starter distributor body, the angle between the distribution plate and the body that can rotate relative to each other does not exceed 5° (for diesel engines with seven cylinders), otherwise the diesel engine will have chaotic intake, resulting in the diesel engine being unable to start or knocking after starting, which will eventually damage the diesel engine.

[0003] Due to the narrow space for on-site maintenance, the angle measuring device cannot be fixed and installed, so the existing technology often uses a feeler gauge to measure the angle. However, when using a feeler gauge for measurement, there is a risk of squeezing the operator's fingers, and there is also a risk that the feeler gauge will be damaged and broken, resulting in foreign matter that cannot be removed. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a tool for measuring the angular clearance of a distribution plate of a diesel engine starting air distributor.

[0005] The utility model adopts the following technical solutions:

[0006] A diesel engine starting air distributor distribution plate angular clearance measuring tool is constructed, comprising:

[0007] An adapter detachably disposed at an end of the distribution disk away from the main body of the starting air distributor, the adapter being formed with a measuring position corresponding to a circumference defined by all the distribution holes of the distribution disk; and

[0008] The dial indicator comprises a mounting seat detachably arranged on the main body and a meter body used to be arranged on the measuring position, wherein the meter body is connected to the mounting seat.

[0009] In some embodiments, at least one positioning hole corresponding to the assembly hole of the distribution plate is formed on the adapter, and the diesel engine starting air distributor distribution plate angular clearance measurement tool also includes at least one positioning member, which is detachably arranged in the assembly hole and the positioning hole.

[0010] In some embodiments, the positioning member is a bolt.

[0011] In some embodiments, the number of the positioning members and the positioning holes is two, and the distance between the two positioning holes is equal to the distance between the two assembly holes.

[0012] In some embodiments, the measuring position passes through an extension line of a line connecting the centers of the two positioning holes.

[0013] In some embodiments, when measuring, the meter body is perpendicular to a line connecting the centers of the two positioning holes.

[0014] In some embodiments, the adapter is in the shape of a longitudinal plate, and its length is greater than the minimum distance from the assembly hole to the distribution hole and less than or equal to the diameter of the distribution plate.

[0015] In some embodiments, the length of the adapter is equal to the diameter of a circle defined by the centers of all the dispensing holes.

[0016] In some embodiments, at least one end of the adapter is formed with at least one adapter groove for forming the measuring position.

[0017] In some embodiments, the mounting base is a magnetic base.

[0018] The utility model has the following advantages:

[0019] By setting up an adapter and a dial indicator, the present application can convert the relative rotation angle between the distribution disk and the main body into a distance value for measurement, without the need to use angle measuring tools such as a feeler gauge, thereby avoiding operational safety issues such as the operator's fingers being squeezed during the measurement process, and also avoiding the problem of the feeler gauge breaking and producing foreign matter; at the same time, the present application has a simple structure, low production cost, a simple measurement process, and simple operating steps. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the utility model, the utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the following drawings only show certain embodiments of the utility model, and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work. In the drawings:

[0021] Figure 1 It is a structural schematic diagram of a distribution plate of a diesel engine used in an embodiment of the utility model;

[0022] Figure 2 It is a schematic diagram of the use state of the angular clearance measuring tool of the distribution plate of the diesel engine starting air distributor in one embodiment of the utility model;

[0023] Figure 3 yes Figure 2 Schematic diagram of the structure of the adapter. DETAILED DESCRIPTION

[0024] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "rear", "up", "down", "left", "right", "vertical", "horizontal", "bottom", "inside", "inside", "outside", etc. are based on the directions or positional relationships shown in some of the drawings, and are constructed and operated in a specific direction. They are only for the convenience of describing the present technical solution, and do not indicate that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation to the present invention.

[0025] It should also be noted that, unless otherwise clearly specified and limited, the terms such as "installed", "connected", "connected", "fixed", "set" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intermediate elements. The terms "first", "second", etc. are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0026] In the following description, specific details such as specific system structures and technologies are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details that hinder the description of the present invention.

[0027] Figure 2 and Figure 3 The angular clearance measuring tool of the distribution plate of the diesel engine starting air distributor in one embodiment of the utility model is shown, which is used to measure the angle value of relative rotation between the distribution plate 4 and the main body of the starting air distributor after assembly.

[0028] It is important to understand that Figure 1 As shown, the starting air distributor includes a main body (not shown in the figure) and a distribution plate 4 detachably arranged on the main body. The cross-section of the distribution plate 4 perpendicular to the axis is circular, and two assembly holes (not shown in the figure) are symmetrically formed with the axis as the symmetry line. At the same time, seven distribution holes 41 are evenly spaced along the circumferential direction on the end side close to the outer periphery, which are used to dock with the circular holes on the main body and respectively connect the seven cylinders of the diesel engine.

[0029] It is important to understand that Figure 1 A1-A1 in FIG. 4 respectively represent positions corresponding to the seven distribution holes 41 .

[0030] It is important to understand that Figure 2 The distribution plate 4 shown only includes six distribution holes 41, which does not mean that the distribution plate 4 applicable to this embodiment only has six distribution holes 41. It is only an exemplary adjustment made to facilitate indicating the positional relationship between the angular clearance measuring tool of the distribution plate of the diesel engine starting air distributor and the distribution plate during use.

[0031] The angular clearance measuring tool of the distribution plate of the diesel engine starting air distributor includes an adapter 1 and a dial indicator 2. The adapter 1 is detachably arranged at the end of the distribution plate 4 away from the main body, and is used to connect the distribution plate 4 and the dial indicator 2. A measuring position is formed on the adapter 1. When the adapter 1 is arranged on the distribution plate 4, the measuring position on the adapter 1 corresponds to the circumference defined by all the distribution holes 41 on the distribution plate 4. The dial indicator 2 includes a meter body 21 and a mounting seat. The meter body 21 is arranged on the measuring position, and is used to convert the rotation of the angle into the movement of the distance. The relative rotation angle between the distribution plate 4 and the main body is obtained by measuring the distance displayed by the meter body 21. The mounting seat is detachably arranged on the main body and connected to the meter body 21. During the test, the distribution plate 4 and the main body are relatively rotated, so that the meter body 21 arranged on the measuring position and the connecting rod connected to the meter body 21 by the mounting seat are relatively moved, so that the meter body obtains the value.

[0032] In this embodiment, when the value measured by the meter body 21 is greater than 1.5 mm, it means that the rotatable angle between the distribution disk 4 and the main body is greater than 5°. At this time, it needs to be replaced, otherwise intake chaos will occur, resulting in the diesel engine being unable to start or knocking after starting, which will eventually damage the diesel engine.

[0033] The present application, by setting up an adapter 1 and a dial indicator 2, can convert the relative rotation angle between the distribution disk 4 and the main body into a distance value for measurement, without the need to use a feeler gauge, thus avoiding the occurrence of operational safety issues such as the operator squeezing the fingers, and also avoiding the problem of the feeler gauge breaking and producing foreign matter. At the same time, the present application has a simple structure and low manufacturing cost, a simple measurement process, and simple operation steps. When in use, it only needs to install the adapter 1 on the distribution disk 4, install the mounting seat of the dial indicator 2 on the main body, install the meter body 21 on the measuring position, and then rotate the distribution disk 4 back and forth, so that the distribution disk 4 and the main body produce relative rotation, and read the maximum value of the dial indicator 2 in this process.

[0034] It should be understood that the conversion relationship between 5° and 1.5 mm can be obtained through existing conversion methods, which will not be described in detail here.

[0035] In this embodiment, “the measuring position corresponds to the circumference defined by all the distribution holes 41 on the distribution plate 4” means that the measuring position corresponds to the inscribed circle defined by all the distribution holes 41, that is, the distance from the measuring position to the axis of the distribution plate 4 is equal to the minimum distance from the distribution hole 41 to the axis of the distribution plate 4.

[0036] In some other optional embodiments, “the measurement position corresponds to the circle defined by all the distribution holes 41 on the distribution plate 4” may also refer to corresponding to the circumscribed circle defined by all the distribution holes 41, or may refer to corresponding to the circle defined by the centers of all the distribution holes 41, or may refer to corresponding to any point in the annular area between the circumscribed circle and the inscribed circle defined by all the distribution holes 41, etc.

[0037] It should be understood that the specific position of the distribution hole 41 corresponding to the measuring position is different, and the limit distance requirements obtained by the conversion method are also different. The 1.5 mm mentioned in this embodiment is only obtained according to the conversion method for the diesel engine model corresponding to this specific embodiment and the specific position of the measuring position determined in this embodiment, so as to illustrate the structure of the present application.

[0038] It should be understood that the maximum angle at which the distribution plate 4 can rotate relative to the main body after being assembled is not necessarily equal to 5°. It is only the limiting angle specified for the diesel engine selected for the purpose of illustration in this embodiment. Different diesel engines have different angle limits according to their models, sizes, and connected cylinders. Different distance limit requirements can be converted for different angles. The angular clearance measuring tooling of the distribution plate of the diesel engine starting air distributor of different sizes can be replaced according to different size requirements for measurement, and judgment can be made according to the corresponding distance limit requirements.

[0039] like Figure 2 and Figure 3 As shown, in some embodiments, at least one positioning hole 11 is formed on the adapter 1, which is used to correspond to the assembly hole on the distribution plate 4 when the adapter 1 is assembled on the distribution plate 4. The diesel engine starting air distributor distribution plate angular clearance measurement tool also includes at least one positioning member 3, which is detachably arranged in the assembly hole and the positioning hole 11, and is used to connect the adapter 1 with the distribution plate 4 for positioning.

[0040] In this embodiment, the number of the positioning holes 11 and the positioning members 3 are both two, and the two positioning holes 11 are used to correspond to the two assembly holes respectively, and the two positioning members 3 are respectively arranged in the two positioning holes 11 and the two assembly holes to increase the stability of the assembly of the adapter 1 and the distribution plate 4, and avoid relative shaking between the two during the measurement process. Specifically, the distance between the two positioning holes 11 is equal to the distance between the two assembly holes.

[0041] It should be understood that “the distance between the two positioning holes 11 is equal to the distance between the two assembly holes” means that the distance between the center points of the two positioning holes 11 is equal to the distance between the center points of the two assembly holes.

[0042] In some other optional embodiments, the positioning hole 11 may not be provided, and a detachable connection between the adapter 1 and the distribution plate 4 may be achieved by providing a detachable adhesive layer on the adapter 1.

[0043] In some other optional embodiments, when only one positioning hole 11 is provided, it is also possible to achieve the coordinated positioning with the one positioning hole 11 by providing a detachable adhesive layer on the adapter 1, thereby enhancing the stability of the positioning.

[0044] Specifically, the positioning member 3 is a bolt. Since the assembly hole is a threaded hole, by setting the positioning member 3 as a bolt, the detachable connection between the two can be easily achieved.

[0045] In this embodiment, the positioning hole 11 is also a threaded hole, and the positioning member 3 is threadedly connected to the positioning hole 11 and the assembly hole, thereby improving the firmness of the assembly between the two.

[0046] In some other optional embodiments, the positioning hole 11 may also be a light hole.

[0047] It should be understood that the shape and size of the positioning hole 11 are not limited here, and its shape can be consistent with the assembly hole, or can be set to other shapes such as rectangle, polygon, etc., and its size can be equal to the size of the assembly hole, or larger than the assembly hole. The size is set so that the positioning member 3 can be inserted therein and the end of the positioning member 3 can be clamped on the end surface of the adapter 1.

[0048] In some embodiments, the measuring position passes through the extension line of the line connecting the centers of the two positioning holes 11. Since the line connecting the center points of the two assembly holes on the distribution disk 4 passes through the axis of the distribution disk 4, the line connecting the center points of the positioning holes 11 corresponding to the two assembly holes also passes through the axis of the distribution disk 4 when the adapter 1 is assembled on the distribution disk 4. The position of the measuring position is determined on the extension line of the line connecting the center points of the two positioning holes 11 (first determine the position of the axis of the distribution disk 4 after assembly (i.e., the midpoint of the line connecting the center points of the two positioning holes 11) through the two positioning holes 11, and then find the position on the extension line of the line connecting the two positioning holes 11 that is equal to the minimum distance between the axis of the distribution disk 4 and the distribution hole 41, which is the measuring position), so that the position of the measuring position can be determined quickly and conveniently, the positioning error of the measuring position can be reduced, and the accuracy in the subsequent measurement process can be ensured.

[0049] In some other optional embodiments, the measuring position may not be on the extension line of the line connecting the two positioning holes 11, as long as the distance between the measuring position and the midpoint of the line connecting the two positioning holes 11 is equal to the minimum distance from the axis of the distribution plate 4 to the distribution hole 41.

[0050] In some embodiments, the adapter 1 is in the shape of a longitudinal plate, and its length is greater than the minimum distance from the assembly hole to the distribution hole 41 .

[0051] It should be understood that the "minimum distance from the assembly hole to the distribution hole 41" does not refer to the distance from the center point of the assembly hole to the center point of the distribution hole 41. Since the positioning member 3 needs to be penetrated in the assembly hole and the positioning hole 11 at the same time, it refers to the distance that can be penetrated by the positioning member 3 to penetrate the assembly hole and the positioning hole 11 (that is, its length needs to ensure that one end can cover the entire assembly hole), and at the same time exceed the distance of the inscribed circle point of the distribution hole 41 (its length needs to ensure that the other end can allow the dial indicator 2 to be set at the measuring position of the inscribed circle of the distribution hole 41).

[0052] Specifically, for the adapter 1 provided with two positioning holes 11 , the length thereof may be greater than the diameter of the inscribed circle of all the distribution holes 41 and less than or equal to the diameter of the distribution disk 4 .

[0053] By setting the diameter to be larger than the diameter of the inscribed circle of all the distribution holes 41, corresponding measuring positions can be set on both ends of the adapter 1, and then when the adapter 1 is assembled, no matter the front end face or the rear end face is adjacent to the distribution plate 4, there are corresponding measuring positions for measurement, so as to improve the convenience of use. By setting the length of the adapter 1 to be smaller than the diameter of the distribution plate 4, in order to cope with a narrow environment, it is prevented that the end of the adapter 1 protrudes from the outer periphery of the distribution plate 4, and is bumped during the measurement process, etc., causing measurement errors.

[0054] In this embodiment, the adapter 1 is in the shape of a long rectangular plate, the length of which is equal to the diameter of the circle defined by the center points of all the distribution holes 41, and the width of which is slightly larger than the diameter of the positioning hole 11, which is adapted to the diameter of the assembly hole. This is to reduce the size of the adapter 1 as much as possible and reduce the manufacturing cost. At the same time, since the diameter of the circle defined by the center points of the distribution holes 41 is easy to obtain, setting the adapter 1 to this length can also facilitate the acquisition of manufacturing data.

[0055] In some other optional embodiments, the adapter 1 can also be configured as other shapes such as a longitudinal rod (round rod, etc.), or as a plate in other shapes such as an ellipse or a racetrack.

[0056] Furthermore, at least one adapter groove 12 is formed on the adapter 1, which is used to form a measuring position.

[0057] In this embodiment, the adapter groove 12 is formed at the end of the adapter 1, and there are two of them, respectively formed at the two ends of the adapter 1. Each adapter groove 12 is rectangular, including two interconnected horizontal walls and a vertical wall, and the remaining two sides respectively penetrate the two interconnected side walls of the adapter 1, and the horizontal wall of the adapter groove 12 is located on the extension line of the line connecting the center points of the two positioning holes 11.

[0058] The adapter groove 12 is arranged at the end of the measuring position, which can facilitate production.

[0059] Furthermore, the line connecting the center points of the two positioning holes 11 coincides with the long axis of the adapter 1, and the two adapter grooves 12 are respectively located on the upper and lower sides of the two ends of the adapter 1, that is, the two adapter grooves 12 are symmetrically arranged with the midpoint of the line connecting the center points of the two positioning holes 11 as the symmetrical point, that is, the adapter 1 is a centrally symmetrical structure.

[0060] In some other optional embodiments, the adapter groove 12 may not penetrate the side wall of the long axis end of the adapter 1, but only penetrate the upper wall or lower wall of the adapter 1, that is, it may be open at only one end.

[0061] In some other optional embodiments, the adapter groove 12 may not be set with the midpoint of the line connecting the center points of the two positioning holes 11 as the symmetry point. It can also be set symmetrically with the short axis of the adapter 1 as the symmetry axis. It can also be set asymmetrically. It should be understood that the setting of the adapter groove 12 only needs to make the measurement position on its horizontal end surface.

[0062] In some other optional embodiments, the adapter groove 12 may not be set to be a rectangle (that is, its groove wall may not be parallel to the two axes of the adapter 1), and it may also be set to be a polygon, a semicircle, an arc, an irregular shape, etc. It should be understood that the shape setting of the adapter groove 12 only needs to ensure that the measurement position is on the groove wall of the adapter groove 12 where the dial indicator can be set.

[0063] In some other optional embodiments, the number of the adapter grooves 12 can also be set to four, and two groups of two are respectively arranged at the two ends of the adapter 1, and each group of two adapter grooves 12 is respectively arranged on the upper and lower sides of the two ends of the adapter 1. It can be ensured that during the assembly process, no matter whether the adapter 1 is assembled on the distribution plate 4 at any angle, positive, negative, up or down, there is at least one corresponding adapter groove 12 for measurement.

[0064] It should be understood that the directional expressions such as "bottom", "upper and lower sides", "upper wall", "lower wall" etc. mentioned are based on Figure 2 as well as Figure 3 The angles shown are for exemplary purposes only.

[0065] In some embodiments, the mounting base of the dial gauge 2 is a magnetic base to facilitate disassembly and assembly on the main body of the starting air distributor.

[0066] It should be understood that during the measurement process, the body 21 of the dial indicator 2 needs to be perpendicular to the line connecting the center lines of the two positioning holes 11, that is, the needle of the body 21 needs to be perpendicular to the groove wall of the adapter groove 12 where the measuring position is located to ensure the accuracy of the measurement.

[0067] It should be understood that the dial gauge 2 can achieve the above-mentioned effects by using existing technologies.

[0068] The present application will be further described below through a specific embodiment:

[0069] The diesel engine starting air distributor distribution plate angular clearance measuring tool shown in this specific implementation uses a distribution plate 4 of a diesel engine starting air distributor, in which the diameter of the circle defined by the center point of the distribution hole 41 is 130 mm, the minimum distance from the distribution hole 41 to the axis of the distribution plate 4 is 60 mm (i.e., the diameter of the distribution hole 41 is 10 mm), and the diameter of the assembly hole is 10 mm.

[0070] The adapter 1 has a length of 130 mm, a width of 22 mm, and a thickness of 8 mm. The diameter of the positioning hole 11 is 12 mm, and the distance between the center points of the two positioning holes 11 is 45 mm. The width of the adapter groove 12 is 13 mm, the depth is 11 mm, and the distance between the groove wall and the nearest point of the positioning hole 11 is 23.5 mm. The diameter of the positioning piece 3 is 10 mm.

[0071] It can be understood that the above embodiments only express the preferred implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the utility model. It should be pointed out that, for ordinary technicians in this field, without departing from the concept of the utility model, the above-mentioned technical features can be freely combined, and several deformations and improvements can be made, which all belong to the protection scope of the utility model. Therefore, all equivalent changes and modifications made to the scope of the claims of the utility model should fall within the scope of the claims of the utility model.

Claims

1. A diesel engine starting air distributor distribution plate angular clearance measurement tool, characterized in that: It comprises an adapter (1) which is detachably arranged at an end of a distribution plate (4) away from a main body of a starting air distributor, wherein the adapter (1) is formed with a measuring position corresponding to a circumference defined by all distribution holes (41) of the distribution plate (4); and A dial gauge (2) comprises a mounting seat detachably arranged on the main body and a meter body (21) used to be arranged on the measuring position, wherein the meter body (21) is connected to the mounting seat.

2. The diesel engine starting air distributor angular clearance measuring tool according to claim 1 is characterized in that: The adapter (1) is formed with at least one positioning hole (11) corresponding to the assembly hole of the distribution plate (4); the diesel engine starting air distributor distribution plate angular clearance measurement tool further comprises at least one positioning member (3); the positioning member (3) is detachably arranged in the assembly hole and the positioning hole (11).

3. The angular clearance measuring tool for the distribution plate of the diesel engine starting air distributor according to claim 2 is characterized in that: The positioning member (3) is a bolt.

4. The angular clearance measuring tool for the distribution plate of the diesel engine starting air distributor according to claim 2 is characterized in that: The number of the positioning member (3) and the positioning hole (11) is two, and the distance between the two positioning holes (11) is equal to the distance between the two assembly holes.

5. The angular clearance measuring tool for the distribution plate of the diesel engine starting air distributor according to claim 4 is characterized in that: The measuring position passes through the extension line of the center line connecting the two positioning holes (11).

6. The angular clearance measuring tool for the distribution plate of the diesel engine starting air distributor according to claim 5 is characterized in that: When measuring, the meter body (21) is perpendicular to the line connecting the centers of the two positioning holes (11).

7. The angular clearance measuring tool for the distribution plate of the diesel engine starting air distributor according to claim 2 is characterized in that: The adapter (1) is in the shape of a longitudinal plate, with a length greater than the minimum distance from the assembly hole to the distribution hole (41) and less than or equal to the diameter of the distribution plate (4).

8. The diesel engine starting air distributor distribution plate angular clearance measuring tool according to claim 7, characterized in that: The length of the adapter (1) is equal to the diameter of the circle defined by the centers of all the distribution holes (41).

9. The diesel engine starting air distributor distribution plate angular clearance measuring tool according to claim 7, characterized in that: At least one end of the adapter (1) is formed with at least one adapter groove (12) for forming the measuring position.

10. The diesel engine starting air distributor distribution plate angular clearance measuring tool according to claim 1, characterized in that: The mounting seat is a magnetic seat.

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