Helicopter engine main connecting rod bushing locking ring inner diameter measuring device

Abstract

The utility model discloses a device for measuring the inner diameter of a locking ring of a main connecting rod bushing of a helicopter engine. The device comprises a leveling part, two measuring parts; wherein one of the measuring parts is fixedly connected with the leveling part and is a fixed measuring part; the other measuring part is connected with the leveling part in a sliding manner and is a sliding measuring part; the two measuring parts are used for abutting against the two symmetrical sides of a locking ring inner diameter detection area respectively. And a measuring mechanism. The measuring device is simple and practical in overall measuring process, and can adaptively correct and adjust inner diameter measuring parameters according to different inner diameters of the locking rings, so that the measuring precision is effectively improved, and the detection efficiency of the inner diameters of the locking rings is ensured. The defect that in the prior art, efficiency is low when a three-coordinate measuring machine is adopted to detect the inner diameter of a locking ring of a special-shaped structure is effectively overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of locking ring inner diameter measurement, in particular to a helicopter engine main connecting rod bushing locking ring inner diameter measuring device. Background Art

[0002] At present, when measuring the inner diameter of the main connecting rod bushing lock ring of a helicopter engine, the measuring position is a special-shaped structure (narrow groove, see Figure 1 ), because its measurement accuracy is required to reach the micron level, conventional universal measuring tools (such as internal calipers, internal diameter gauges, internal diameter measuring instruments, etc.) cannot meet the measurement of this parameter. Generally, it is measured by a three-coordinate measuring machine, but the three-coordinate measuring machine requires a dedicated person to transport the main connecting rod bushing lock ring to the three-coordinate precision measurement room for measurement. The transportation process is labor-intensive and time-consuming, and according to the work standard, the inspection personnel must obtain the calibration certificate of the coordinate measurement parameters before they can carry out the inspection. This makes it extremely inconvenient to measure the inner diameter of the lock ring, resulting in low inspection efficiency. Utility Model Content

[0003] The utility model aims to solve the shortcoming in the prior art that the detection efficiency of the inner diameter of the lock ring of the special-shaped structure by using a three-coordinate measuring machine is low, and proposes a helicopter engine main connecting rod bushing lock ring inner diameter measuring device.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A helicopter engine main connecting rod bushing lock ring inner diameter measuring device, comprising:

[0006] A leveling part, wherein the leveling part is arranged on the locking ring and is arranged horizontally;

[0007] Two measuring parts, the two measuring parts are arranged on two ends of the leveling part;

[0008] Among them, one of the measuring parts is fixedly connected to the leveling part, which is a fixed measuring part; the other measuring part is slidably connected to the leveling part, which is a sliding measuring part;

[0009] The two measuring parts are respectively used to abut against two symmetrical sides of the inner diameter detection area of ​​the lock ring;

[0010] The measuring mechanism is arranged on the outer periphery of the leveling part, the measuring end of the measuring mechanism abuts against one side of the sliding measuring part, and the measuring mechanism is horizontally arranged between the two measuring parts.

[0011] In a feasible embodiment, the leveling part includes:

[0012] A bushing, wherein the bushing is in a sleeve shape, and a first fixing hole and a first sliding hole are arranged on the outer circumference of the bushing, wherein the first fixing hole and the first sliding hole are on the same horizontal line, and one of the measuring parts is fixedly connected to the bushing through the first fixing hole, and the other measuring part is slidably connected to the bushing through the first sliding hole;

[0013] The spring is sleeved inside the bushing, and the two measuring parts are sleeved on two ends of the spring respectively.

[0014] In a feasible embodiment, the fixed measuring unit includes:

[0015] A first connecting rod, wherein a mounting hole is provided on the first connecting rod, the first connecting rod is sleeved inside one end of the bushing, one end of the first connecting rod located inside the bushing is sleeved on one end of the spring, and the mounting hole is connected to the first fixing hole in an up-and-down manner;

[0016] a connecting piece, one end of which passes through the first fixing hole and is connected to the mounting hole, so as to realize fixed connection between the connecting rod and the bushing;

[0017] A first measuring block, the first measuring block is arranged at the other end of the first connecting rod, the first measuring block is in a sheet shape on a side away from the first connecting rod, the first measuring block is provided with a first abutment joint on the sheet side, and the first measuring block locates the abutment joint in the detection area of ​​the inner diameter of the locking ring through the sheet side;

[0018] A first spring plunger, the first spring plunger is vertically penetrated and arranged on the first measuring block, and the bottom end of the first spring plunger abuts against the top edge of the inner diameter of the locking ring;

[0019] The first adjusting nut is sleeved on the outside of the first spring plunger, the first adjusting nut is threadedly connected to the first spring plunger, and the bottom end of the first adjusting nut abuts against the top end of the first measuring block.

[0020] In a feasible embodiment, the sliding measurement unit includes:

[0021] A second connecting rod, the second connecting rod also being provided with a mounting hole, the second connecting rod being sleeved inside the other end of the bushing, and one end of the second connecting rod located inside the bushing being sleeved on the other end of the spring;

[0022] Wherein, the mounting hole is connected with the first sliding hole in an up-and-down manner;

[0023] a second connecting member, one end of which passes through the first sliding hole and is connected to the mounting hole, and the second connecting rod slides in the first sliding hole through the second connecting member;

[0024] A second measuring block, the second measuring block is arranged at the other end of the second connecting rod, the side of the second measuring block away from the second connecting rod is in a sheet shape, the second measuring block is provided with a second abutment joint on the sheet side, and the second measuring block locates the second abutment joint in the detection area of ​​the inner diameter of the locking ring through the sheet side;

[0025] A second spring plunger, the second spring plunger is vertically penetrated and arranged on the second measuring block, and the bottom end of the second spring plunger abuts against the top edge of the inner diameter of the locking ring;

[0026] The second adjusting nut is sleeved on the outside of the second spring plunger, the second adjusting nut is threadedly connected to the second spring plunger, and the bottom end of the second adjusting nut abuts against the top end of the second measuring block.

[0027] In a feasible embodiment, the first sliding hole is a bar-shaped hole.

[0028] In a feasible embodiment, a second fixing hole is provided on the outer periphery of the bushing, the second fixing hole is close to the first sliding hole, and the opening direction of the second fixing hole is perpendicular to the opening direction of the first sliding hole;

[0029] Wherein, the measuring mechanism is connected to the bushing through the second fixing hole.

[0030] In a feasible embodiment, the measuring mechanism includes:

[0031] A measuring plate, the measuring plate is arranged on the sliding measuring part, and the measuring plate is connected to one side of the second measuring block on the sliding measuring part;

[0032] A mounting block, one end of which is disposed on the second fixing hole, and the mounting block is detachably connected to the bushing;

[0033] A sleeve connecting rod, the sleeve connecting rod is vertically arranged at the top end of the mounting block, the sleeve connecting rod is connected to the mounting block, a sleeve connecting hole is horizontally penetrated on the sleeve connecting rod, and the setting direction of the sleeve connecting hole is consistent with the opening direction of the bushing;

[0034] A measuring meter, wherein the measuring end of the measuring meter is externally sleeved in the sleeve hole, the measuring meter is horizontally arranged, and the measuring end of the measuring meter is abutted and connected with the measuring plate;

[0035] A locking sleeve, wherein the locking sleeve is sleeved on the sleeve connecting rod, and the bottom end of the locking sleeve abuts against the outside of the measuring end of the measuring meter;

[0036] A butterfly nut is threadedly sleeved on the sleeve rod, and the bottom end of the butterfly nut abuts against the locking sleeve.

[0037] In a feasible embodiment, the bottom end of the locking sleeve is an inverted V-shaped opening, and the locking sleeve is clamped on the outside of the measuring end of the measuring meter through the inverted V-shaped opening.

[0038] In a feasible embodiment, the measuring gauge includes: a micrometer or a vernier gauge.

[0039] In a feasible embodiment, a handle is further provided on the bushing, and the handle is detachably connected to the bushing.

[0040] The beneficial effects of the utility model are:

[0041] In the embodiment of the utility model, the leveling part is first allowed to establish a horizontal detection state in the inner diameter detection area of ​​the lock ring, and then the two measuring parts are allowed to enter the inner diameter detection area of ​​the lock ring respectively, and the fixed measuring part is allowed to make a determination in the detection area of ​​the inner diameter of the lock ring, and then the sliding measuring part is allowed to perform adaptive correction and adjustment movement in the detection area of ​​the inner diameter of the lock ring, and the fixed measuring part and the sliding measuring part are allowed to select two symmetrical positions in the detection area of ​​the inner diameter of the lock ring, and at the same time, the correction and adjustment movement parameters of the sliding measuring part are read according to the measuring mechanism to achieve the measurement of the inner diameter of the lock ring. The overall measurement process of the measuring device is simple and practical, and it can perform adaptive correction and adjustment of the inner diameter measurement parameters according to different inner diameters of the lock ring, so that the measurement accuracy is effectively provided, and the detection efficiency of the inner diameter of the lock ring is guaranteed. That is, it effectively solves the disadvantage of low efficiency of using a three-coordinate measuring machine to detect the inner diameter of the lock ring with a special-shaped structure in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 A schematic diagram of the overall structure and use of a helicopter engine main connecting rod bushing lock ring inner diameter measuring device provided in an embodiment of the utility model;

[0043] Figure 2 It is a schematic structural diagram of the first part of a helicopter engine main connecting rod bushing lock ring inner diameter measuring device provided in an embodiment of the utility model;

[0044] Figure 3 It is a schematic structural diagram of a sliding measuring part in a helicopter engine main connecting rod bushing lock ring inner diameter measuring device provided in an embodiment of the utility model;

[0045] Figure 4 The present invention is a schematic diagram of the structure of a measuring mechanism in a device for measuring the inner diameter of a main connecting rod bushing lock ring of a helicopter engine provided in an embodiment of the utility model.

[0046] The markings in the figure are as follows:

[0047] 1. Locking ring;

[0048] 2. Bushing; 21. Connector; 211. First fixing hole; 212. First sliding hole;

[0049] 22. handle; 23. second fixing hole;

[0050] 3. Fixed measuring part; 31. First connecting rod; 311. Mounting hole; 32. First measuring block; 321. First abutting joint; 33. First spring plunger; 331. First adjusting nut; 34. Spring; 35. Sliding measuring part; 351. Second connecting rod; 352. Second measuring block; 353. Second spring plunger; 354. Second adjusting nut; 355. Measuring plate;

[0051] 4. Measuring mechanism; 41. Mounting block; 42. Sleeve rod; 421. Sleeve hole; 43. Measuring table; 44. Locking sleeve; 45. Butterfly nut. DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0053] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0054] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0056] Embodiment 1

[0057] Reference Figures 1 to 4The purpose of the utility model is to solve the shortcoming of low efficiency of using a three-coordinate measuring machine to detect the inner diameter of a special-shaped lock ring 1 in the prior art, and to provide a helicopter engine main connecting rod bushing 2 lock ring 1 inner diameter measuring device. Specifically, the measuring device includes: a leveling part, two measuring parts and a measuring mechanism 4. The leveling part is arranged on the lock ring 1, and the leveling part is arranged horizontally. The leveling part is used to ensure that the measuring device as a whole is measured in a horizontal state on the lock ring 1, thereby reducing the influence of measurement errors in a non-horizontal state. The two measuring parts are arranged at both ends of the leveling part, one of the measuring parts is fixedly connected to the leveling part (that is, the fixed measuring part 3), and the other of the measuring parts is slidably connected to the leveling part (that is, the sliding measuring part 35). The two measuring parts are respectively used to abut against the symmetrical two sides of the inner diameter detection area of ​​the lock ring 1 to achieve measurement and detection of the inner diameter of the lock ring 1. The measuring mechanism 4 is arranged on the outer periphery of the leveling part, the measuring end of the measuring mechanism 4 is in contact with one side of the sliding measuring part 35, and the measuring mechanism 4 is arranged horizontally between the two measuring parts to realize adaptive correction of the measuring parameters of the inner diameter of the lock ring 1, thereby ensuring the measurement accuracy of the inner diameter of the lock ring 1. That is, in this embodiment, the leveling part is firstly allowed to establish a horizontal detection state in the inner diameter detection area of ​​the lock ring 1, and then the two measuring parts are respectively allowed to enter the inner diameter detection area of ​​the lock ring 1, and the fixed measuring part 3 is allowed to make a determination in the detection area of ​​the inner diameter of the lock ring 1, and then the sliding measuring part 35 is allowed to perform adaptive correction and adjustment movement in the detection area of ​​the inner diameter of the lock ring 1, and the fixed measuring part 3 and the sliding measuring part 35 are allowed to select two symmetrical positions in the detection area of ​​the inner diameter of the lock ring 1, and at the same time, the correction and adjustment movement parameters of the sliding measuring part 35 are read according to the measuring mechanism 4, so as to realize the measurement of the inner diameter of the lock ring 1. The overall measuring process of the measuring device is simple and practical, and the inner diameter measuring parameters can be adjusted according to the different inner diameters of the lock ring 1 to improve the measuring accuracy and ensure the detection efficiency of the inner diameter of the lock ring 1. That is, the disadvantage of the prior art that the inner diameter of the lock ring 1 with a special structure is detected by a three-coordinate measuring machine with low efficiency is effectively solved.

[0058] Reference Figure 2 and Figure 4, the leveling part includes: a bushing 2 and a spring. The bushing 2 is in the shape of a sleeve, and a first fixing hole 211 and a first sliding hole 212 are arranged on the outer periphery of the bushing 2, and the first fixing hole 211 and the first sliding hole 212 are on the same horizontal line, one of the measuring parts is fixedly connected to the bushing 2 through the first fixing hole 211, and the other measuring part is slidingly connected to the bushing 2 through the first sliding hole 212. The spring is sleeved inside the bushing 2, and the two measuring parts are respectively sleeved at both ends of the spring. That is, the two measuring parts are arranged inside the bushing 2, and the two measuring parts are mutually abutted by the spring. In this embodiment, the two measuring parts have the same structure. In order to facilitate the description of the structure of the two measuring parts, a fixed measuring part 3 is used as an example. The fixed measuring part 3 includes: a first connecting rod 31, a connecting member 21, a first measuring block 32, a first spring plunger 33 and a first adjusting nut 331. The first connecting rod 31 is provided with a mounting hole 311, and the first connecting rod 31 is sleeved inside one end of the bushing 2. The end of the first connecting rod 31 located inside the bushing 2 is sleeved on one end of the spring, and the mounting hole 311 is connected with the first fixing hole 211 up and down. One end of the first connecting member 21 passes through the first fixing hole 211 and is connected with the mounting hole 311, so as to realize the fixed connection between the first connecting rod 31 and the bushing 2. The first measuring block 32 is provided at the other end of the first connecting rod 31, and the side of the first measuring block 32 away from the first connecting rod 31 is in the shape of a sheet, and the first measuring block 32 is provided with a first abutment joint 321 on the sheet side, and the first measuring block 32 locates the first abutment joint 321 in the detection area of ​​the inner diameter of the lock ring 1 through the sheet side, so as to realize the setting of the detection position of the fixed measuring part 3. The first spring plunger 33 is arranged on the first measuring block 32 from top to bottom, and the bottom end of the first spring plunger 33 abuts against the top edge of the inner diameter of the lock ring 1, so as to realize the leveling operation of the fixed measuring part 3 in cooperation with the bushing 2. The first adjusting nut 331 is sleeved on the outside of the first spring plunger 33, the first adjusting nut 331 is threadedly connected to the first spring plunger 33, and the bottom end of the first adjusting nut 331 abuts against the top end of the first measuring block 32. According to the installation height of the first spring plunger 33 in the first measuring block 32, the installation height of the first spring plunger 33 is limited in cooperation with the first adjusting nut 331, so as to realize the adjustment of the inner diameter of the lock ring 1 of different depths, so as to adjust the leveling height of the bushing 2 at any time. In addition, it should be noted that the structure of the sliding measuring part 35 is the same as that of the fixed measuring part 3, and the sliding measuring part 35 also includes: a second connecting rod 351, a second connecting member 21, a second measuring block 352, a second spring plunger 353 and a second adjusting nut 354, and the sliding measuring part 35 is arranged inside the other end of the bushing 2.That is, a mounting hole 311 is also provided on the second connecting rod 351 in the sliding measuring part 35, and the second connecting rod 351 is sleeved inside the other end of the bushing 2, and one end of the second connecting rod 351 located inside the bushing 2 is sleeved on the other end of the spring, and the mounting hole 311 is connected with the first sliding hole 212 in an up-and-down manner. One end of the second connecting member 21 passes through the first sliding hole 212 and is connected to the mounting hole 311, and the second measuring block 352 on the sliding measuring part 35 is adjusted adaptively by sliding the second connecting member 21 in the first sliding hole 212, so as to ensure the detection effect of the test device. The second measuring block 352 is provided at the other end of the second connecting rod 351, and the side of the second measuring block 352 away from the second connecting rod 351 is in the shape of a sheet, and the second measuring block 352 is provided with a second abutment on the sheet side, and the second measuring block 352 places the second abutment in the detection area of ​​the inner diameter of the lock ring 1 through the sheet side, so as to set the detection position of the fixed measuring part 3. The second spring plunger 353 is arranged on the second measuring block 352 from top to bottom, and the bottom end of the second spring plunger 353 abuts against the top edge of the inner diameter of the lock ring 1, so as to realize the leveling operation of the sliding measuring part 35 in cooperation with the bushing 2. The second adjusting nut 354 is sleeved on the outside of the second spring plunger 353, and the second adjusting nut 354 is threadedly connected to the second spring plunger 353. The bottom end of the second adjusting nut 354 abuts against the top of the second measuring block 352, and the installation height of the second spring plunger 353 is limited in cooperation with the second adjusting nut 354 according to the installation height of the second spring plunger 353 in the second measuring block 352. In one embodiment, the first sliding hole 212 is a bar-shaped hole, so that the connecting member 21 can slide therein. In addition, it should be noted that, by arranging the spring inside the bushing 2, on the one hand, the relative position between the fixed measuring part 3 and the sliding measuring part 35 is always on the same horizontal line, ensuring the subsequent data feedback accuracy of the two measuring parts; on the other hand, the sliding measuring part 35 can follow the inner diameter of the locking ring 1 for adaptive correction and adjustment, further ensuring the subsequent measurement accuracy.

[0059] In this embodiment, in order to ensure that the second spring plunger 353 and the second adjusting nut 354 cooperate with the sliding measuring part 35, and the first spring plunger 33 and the first adjusting nut 331 cooperate with the horizontal position between the fixed measuring part 3 and the bushing 2, so as to meet the inner diameter detection of the lock ring 1 in the inner diameter detection area of ​​the lock ring 1 at different depths, the second spring plunger 353 and the first spring plunger 33 are respectively connected with the second measuring block 352 and the first measuring block 32 by plugging (transition fit or interference fit), that is, in actual installation, the first spring plunger 33 or the second The spring plunger 353 is installed vertically through the first measuring block 32 or the second measuring block 352, and then the first adjusting nut 331 or the second adjusting nut 354 is installed on the external thread of the first spring plunger 33 or the second spring plunger 353, so that the second adjusting nut 354 abuts against the top of the second measuring block 352, and the first adjusting nut 331 abuts against the top of the first measuring block 32, so as to respectively control the insertion and extraction depth of the first spring plunger 33 and the second spring plunger 353 in the first measuring block 32 or the second measuring block 352. In a feasible embodiment, the second spring plunger 353 can be threadedly connected to the second measuring block 352, and the first spring plunger 33 can be threadedly connected to the first measuring block 32.

[0060] Reference Figure 1 and Figure 4In this embodiment, a second fixing hole 23 is provided on the outer periphery of the bushing 2, the second fixing hole 23 is close to the first sliding hole 212, and the opening direction of the second fixing hole 23 is perpendicular to the opening direction of the first sliding hole 212. The measuring mechanism 4 is connected to the bushing 2 through the second fixing hole 23. Specifically, the measuring mechanism 4 includes: a mounting block 41, a sleeve rod 42, a measuring plate 355, a measuring gauge 43, a locking sleeve 44 and a butterfly nut 45. The measuring plate 355 is arranged on the sliding measuring part 35, and the measuring plate 355 is connected to one side of the measuring block on the sliding measuring part 35. One end of the mounting block 41 is arranged on the second fixing hole 23, and the mounting block 41 and the bushing 2 can be detachably connected by threads. The sleeve rod 42 is vertically arranged at the top of the mounting block 41, the sleeve rod 42 is connected to the mounting block 41, and a sleeve hole 421 is horizontally penetrated on the sleeve rod 42, and the setting direction of the sleeve hole 421 is consistent with the opening direction of the bushing 2. The measuring end of the measuring meter 43 is externally sleeved in the sleeve hole 421, the measuring meter 43 is horizontally arranged, and the measuring end of the measuring meter 43 is abutted and connected with the measuring plate 355. The locking sleeve 44 is sleeved on the sleeve rod 42, and the bottom end of the locking sleeve 44 abuts against the outside of the measuring end of the measuring meter 43 to lock the measuring position of the measuring meter 43 on the sleeve rod 42. The butterfly nut 45 is threadedly sleeved on the sleeve rod 42, and the bottom end of the butterfly nut 45 abuts against the locking sleeve 44 to lock the outside of the measuring end of the measuring meter 43 (that is, the part not involved in the measurement) in cooperation with the locking sleeve 44. In some embodiments, in order to ensure that the locking sleeve 44 has an external locking effect on the measuring end of the measuring gauge 43, the bottom end of the locking sleeve 44 is an inverted V-shaped opening, and the locking sleeve 44 is clamped on the external measuring end of the measuring gauge 43 through the inverted V-shaped opening to achieve locking of the external measuring end of the measuring gauge 43. It should be noted that in this embodiment, the measuring gauge 43 can be a micrometer, a dial gauge, etc. according to the detection requirements. In addition, when measuring the inner diameter of the lock ring 1, it is necessary to ensure that the measuring end of the measuring gauge 43 is always in abutment.

[0061] In this embodiment, in order to facilitate the inspector to take the measuring device, a handle 22 is further provided on the bushing 2, and the handle 22 is detachably connected to the bushing 2 via a thread.

[0062] Embodiment 2

[0063] In this embodiment, in order to facilitate synchronous inner diameter measurement of the inner diameters of the lock rings 1 of different lengths, the sliding measuring part 35 and the fixed measuring part 3 in the measuring device can also be arranged as follows: specifically, a plurality of mounting holes 311 on the connecting rod in the fixed measuring part 3 can be arranged, and the plurality of mounting holes 311 are on the same straight line along the outer circumference of the connecting rod, that is, when it is necessary to measure the inner diameters of the lock rings 1 of different lengths, the position of the mounting hole 311 of the connecting rod of the connecting piece 21 in the fixed measuring part 3 can be adjusted to change the position of the connecting rod in the bushing 2, and accordingly, the degree of deformation of the spring in the bushing 2 is also changed accordingly. It should be noted that the ends of the sliding measuring part 35 and the fixed measuring part 3 that are close to each other are respectively in contact with the spring in the bushing 2. In a feasible embodiment, in order to coordinate with changing the installation position of the connecting member 21 on the fixed measuring part 3 on the installation hole 311, correspondingly, the installation hole 311 on the sliding measuring part 35 can also be provided with multiple, that is, after the position of the installation hole 311 of the connecting member 21 on the connecting rod in the fixed measuring part 3 is changed, the position of the installation hole 311 of the connecting member 21 on the connecting rod in the sliding measuring part 35 is also changed accordingly. In addition, the arrangement of other parts in the measuring device in this embodiment is consistent with the arrangement structure of the first embodiment, and will not be repeated here.

[0064] In this embodiment, in order to ensure that the sliding measuring part 35 can slide normally, the lengths of the connecting rods and the springs on both the fixed measuring part 3 and the sliding measuring part 35 are adaptively adjusted accordingly.

[0065] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A helicopter engine main connecting rod bushing lock ring inner diameter measuring device, characterized in that: include: A leveling part, wherein the leveling part is arranged on the locking ring and is arranged horizontally; Two measuring parts, the two measuring parts are arranged on two ends of the leveling part; Among them, one of the measuring parts is fixedly connected to the leveling part, which is a fixed measuring part; the other measuring part is slidably connected to the leveling part, which is a sliding measuring part; The two measuring parts are respectively used to abut against two symmetrical sides of the inner diameter detection area of ​​the lock ring; The measuring mechanism is arranged on the outer periphery of the leveling part, the measuring end of the measuring mechanism abuts against one side of the sliding measuring part, and the measuring mechanism is horizontally arranged between the two measuring parts.

2. A helicopter engine main connecting rod bushing lock ring inner diameter measuring device according to claim 1, characterized in that: The leveling part comprises: A bushing, wherein the bushing is in a sleeve shape, and a first fixing hole and a first sliding hole are arranged on the outer circumference of the bushing, wherein the first fixing hole and the first sliding hole are on the same horizontal line, and one of the measuring parts is fixedly connected to the bushing through the first fixing hole, and the other measuring part is slidably connected to the bushing through the first sliding hole; The spring is sleeved inside the bushing, and the two measuring parts are sleeved on two ends of the spring respectively.

3. A helicopter engine main connecting rod bushing lock ring inner diameter measuring device according to claim 2, characterized in that: The fixed measuring unit comprises: A first connecting rod, wherein a mounting hole is provided on the first connecting rod, the first connecting rod is sleeved inside one end of the bushing, one end of the first connecting rod located inside the bushing is sleeved on one end of the spring, and the mounting hole is connected to the first fixing hole in an up-and-down manner; a connecting piece, one end of which passes through the first fixing hole and is connected to the mounting hole, so as to realize fixed connection between the connecting rod and the bushing; A first measuring block, the first measuring block is arranged at the other end of the first connecting rod, the first measuring block is in a sheet shape on a side away from the first connecting rod, the first measuring block is provided with a first abutment joint on the sheet side, and the first measuring block locates the abutment joint in the detection area of ​​the inner diameter of the locking ring through the sheet side; A first spring plunger, the first spring plunger is vertically penetrated and arranged on the first measuring block, and the bottom end of the first spring plunger abuts against the top edge of the inner diameter of the locking ring; The first adjusting nut is sleeved on the outside of the first spring plunger, the first adjusting nut is threadedly connected to the first spring plunger, and the bottom end of the first adjusting nut abuts against the top end of the first measuring block.

4. A helicopter engine main connecting rod bushing lock ring inner diameter measuring device according to claim 3, characterized in that: The sliding measurement unit comprises: A second connecting rod, the second connecting rod also being provided with a mounting hole, the second connecting rod being sleeved inside the other end of the bushing, and one end of the second connecting rod located inside the bushing being sleeved on the other end of the spring; Wherein, the mounting hole is connected with the first sliding hole in an up-and-down manner; a second connecting member, one end of which passes through the first sliding hole and is connected to the mounting hole, and the second connecting rod slides in the first sliding hole through the second connecting member; A second measuring block, the second measuring block is arranged at the other end of the second connecting rod, the side of the second measuring block away from the second connecting rod is in a sheet shape, the second measuring block is provided with a second abutment joint on the sheet side, and the second measuring block locates the second abutment joint in the detection area of ​​the inner diameter of the locking ring through the sheet side; A second spring plunger, the second spring plunger is vertically penetrated and arranged on the second measuring block, and the bottom end of the second spring plunger abuts against the top edge of the inner diameter of the locking ring; The second adjusting nut is sleeved on the outside of the second spring plunger, the second adjusting nut is threadedly connected to the second spring plunger, and the bottom end of the second adjusting nut abuts against the top end of the second measuring block.

5. A helicopter engine main connecting rod bushing lock ring inner diameter measuring device according to claim 4, characterized in that: The first sliding hole is a bar-shaped hole.

6. A helicopter engine main connecting rod bushing lock ring inner diameter measuring device according to any one of claims 4 or 5, characterized in that: A second fixing hole is provided on the outer periphery of the bushing, the second fixing hole is close to the first sliding hole, and the opening direction of the second fixing hole is perpendicular to the opening direction of the first sliding hole; Wherein, the measuring mechanism is connected to the bushing through the second fixing hole.

7. A helicopter engine main connecting rod bushing lock ring inner diameter measuring device according to claim 6, characterized in that: The measuring mechanism comprises: A measuring plate, the measuring plate is arranged on the sliding measuring part, and the measuring plate is connected to one side of the second measuring block on the sliding measuring part; A mounting block, one end of which is disposed on the second fixing hole, and the mounting block is detachably connected to the bushing; A sleeve connecting rod, the sleeve connecting rod is vertically arranged at the top end of the mounting block, the sleeve connecting rod is connected to the mounting block, a sleeve connecting hole is horizontally penetrated on the sleeve connecting rod, and the setting direction of the sleeve connecting hole is consistent with the opening direction of the bushing; A measuring meter, wherein the measuring end of the measuring meter is externally sleeved in the sleeve hole, the measuring meter is horizontally arranged, and the measuring end of the measuring meter is abutted and connected with the measuring plate; A locking sleeve, wherein the locking sleeve is sleeved on the sleeve connecting rod, and the bottom end of the locking sleeve abuts against the outside of the measuring end of the measuring meter; A butterfly nut is threadedly sleeved on the sleeve rod, and the bottom end of the butterfly nut abuts against the locking sleeve.

8. A helicopter engine main connecting rod bushing lock ring inner diameter measuring device according to claim 7, characterized in that: The bottom end of the locking sleeve is an inverted V-shaped opening, and the locking sleeve is clamped on the outside of the measuring end of the measuring meter through the inverted V-shaped opening.

9. A helicopter engine main connecting rod bushing lock ring inner diameter measuring device according to claim 7 or 8, characterized in that: The measurement table includes: Dial indicator or dial gauge.

10. The helicopter engine main connecting rod bushing lock ring inner diameter measuring device according to claim 2, characterized in that: The bushing is also provided with a handle, and the handle is detachably connected to the bushing.

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