A shaft hole detection device

Abstract

The present invention discloses a shaft hole detection device. The shaft hole detection device includes a shaft hole positioning mechanism, a measuring mechanism and a connecting mechanism. The shaft hole positioning mechanism includes at least three positioning members, and the at least three positioning members can be moved into the shaft hole in the axial direction. The shaft hole positioning mechanism can be moved in the radial direction so that at least three positioning members located in the shaft hole that move the same distance in the radial direction respectively abut against the inner diameter surface of the shaft hole. The measuring mechanism includes an aperture measuring member, and the aperture measuring member can be moved into the shaft hole in the axial direction. The aperture measuring member located in the shaft hole is used to detect the diameter of the shaft hole. The connecting mechanism is used to connect the shaft hole positioning mechanism and the measuring mechanism so that the shaft hole positioning mechanism and the measuring mechanism move synchronously in the radial direction. According to the shaft hole detection device of the present invention, the diameter of the shaft hole can be accurately measured.

Description

Technical Field

[0001] The present invention relates to the technical field of automation equipment, and in particular to a shaft hole detection device. Background Art

[0002] In the current engine production process, the bearing hole is usually measured manually using a dial indicator, and the bearing is judged to be qualified based on the measured data. However, the existing measurement method has large errors.

[0003] Therefore, it is necessary to provide a shaft hole detection device to at least partially solve the above problems. Summary of the Invention

[0004] The Summary of the Invention introduces a series of simplified concepts that will be further described in the Detailed Description of the Invention. The Summary of the Invention is not intended to limit the key features and essential features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0005] In order to at least partially solve the above problem, according to a first aspect of the present invention, a shaft hole detection device is provided for a shaft hole, the shaft hole detection device comprising:

[0006] A shaft hole positioning mechanism, the shaft hole positioning mechanism comprising at least three positioning members, each of the at least three positioning members being movable into the shaft hole along the axial direction of the shaft hole, and the shaft hole positioning mechanism being movable along the radial direction of the shaft hole so that the at least three positioning members located in the shaft hole and moving the same distance along the radial direction of the shaft hole respectively abut against the inner diameter surface of the shaft hole;

[0007] a measuring mechanism comprising an aperture measuring member, the aperture measuring member being movable into the axial hole along the axial direction, the aperture measuring member located in the axial hole being used to detect a diameter of the axial hole; and

[0008] A connecting mechanism is used to connect the shaft hole positioning mechanism and the measuring mechanism so that the shaft hole positioning mechanism and the measuring mechanism move synchronously along the radial direction.

[0009] According to the shaft hole detection device of the present invention, the shaft hole detection device includes a shaft hole positioning mechanism, a measuring mechanism and a connecting mechanism, the shaft hole positioning mechanism includes at least three positioning members, at least three positioning members can be moved into the shaft hole in the axial direction, the shaft hole positioning mechanism can be moved in the radial direction so that at least three positioning members located in the shaft hole and moved the same distance in the radial direction respectively abut against the inner diameter surface of the shaft hole, the measuring mechanism includes an aperture measuring member, the aperture measuring member can be moved into the shaft hole in the axial direction, the aperture measuring member located in the shaft hole is used to detect the diameter of the shaft hole, and the connecting mechanism is used to connect the shaft hole positioning mechanism and the measuring mechanism so that the shaft hole positioning mechanism and the measuring mechanism move synchronously in the radial direction. In this way, the shaft hole positioning mechanism and the measuring mechanism move synchronously in the radial direction, the shaft hole positioning mechanism can accurately locate the center of the shaft hole, thereby ensuring that the measuring mechanism can accurately measure the diameter of the shaft hole, realizing automatic positioning, automatic measurement and automatic judgment, flexible operation, improved measurement accuracy, reduced manual operation errors, and improved production efficiency and safety in the engine production process.

[0010] Optionally, the aperture measuring member includes a sensor, the sensor located in the shaft hole contacts the inner diameter surface, and the sensor is rotatable along the circumferential direction of the shaft hole, thereby automatically measuring the diameter of the shaft hole.

[0011] Optionally, the shaft hole positioning mechanism further includes a positioning body and a positioning axial drive member, the positioning body is provided with the at least three positioning members, and the positioning axial drive member is connected to the positioning body to drive the at least three positioning members to move in the axial direction.

[0012] Optionally, the shaft hole positioning mechanism further includes at least three positioning radial drive members, and the at least three positioning radial drive members are respectively connected to the at least three positioning members to respectively drive the at least three positioning members to move along the radial direction.

[0013] Optionally, the measuring mechanism further includes a measuring circumferential drive member and a rotating shaft, wherein the measuring circumferential drive member is connected to the aperture measuring member via the rotating shaft to drive the aperture measuring member to rotate along the circumferential direction.

[0014] Optionally, the measuring mechanism further includes a measuring axial drive member, which is connected to the aperture measuring member to drive the aperture measuring member to move along the axial direction.

[0015] Optionally, the measuring mechanism further includes a measuring radial driving member, which is connected to the sensor to drive the sensor to move along the radial direction.

[0016] Optionally, the measuring mechanism further includes a transmission member for connecting the measuring circumferential drive member and the rotating shaft, the rotating shaft is coaxially arranged with the shaft hole, and the measuring circumferential drive member and the rotating shaft are arranged side by side along the radial direction.

[0017] Optionally, the direction in which the positioning member moves along the axial direction is opposite to the direction in which the aperture measuring member moves.

[0018] Optionally, the top of the shaft hole positioning mechanism and the measuring mechanism are both connected to the lower surface of the connecting mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The following drawings of the present invention are hereby incorporated into the present invention for understanding the present invention. The drawings show embodiments of the present invention and their descriptions, and are used to explain the device and principle of the present invention. In the drawings,

[0020] Figure 1 A perspective view of a cylinder block of a conventional engine;

[0021] Figure 2 It is a front view of a shaft hole detection device according to a preferred embodiment of the present invention;

[0022] Figure 3 for Figure 2 A front view of the shaft hole positioning mechanism of the shaft hole detection device shown;

[0023] Figure 4 for Figure 3 The right side view of the shaft hole positioning mechanism shown;

[0024] Figure 5 for Figure 2 A front view of the measuring mechanism and connecting mechanism of the shaft hole detection device shown;

[0025] Figure 6 for Figure 5 a front view of the measuring mechanism shown; and

[0026] Figure 7 for Figure 5 Right side view of the measuring mechanism shown.

[0027] Description of reference numerals:

[0028] 100: Shaft hole detection device 110: Shaft hole positioning mechanism

[0029] 111: First contact point 112: Second contact point

[0030] 113: Third contact point 114: Positioning body

[0031] 115: Positioning axial drive member 116: Positioning radial drive member

[0032] 118: Positioning guide assembly 119: First positioning connection member

[0033] 120: Second positioning and connecting member 140: Measuring mechanism

[0034] 141: Aperture measuring component 142: Measuring circumferential drive component

[0035] 143: Rotating shaft 144: Measuring axial drive component

[0036] 145: Measuring radial drive component 146: Transmission component

[0037] 147: Measurement connection component 148: Measurement guide component

[0038] 180: Connecting mechanism 181: Lower surface of the connecting mechanism

[0039] 200: Shaft hole 201: Inner diameter surface of the shaft hole

[0040] 202: Cylinder 203: Support frame

[0041] 204: Pallet DETAILED DESCRIPTION

[0042] In the following description, numerous specific details are provided to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention may be practiced without one or more of these details. In other instances, certain technical features well known in the art are not described to avoid confusion with the present invention.

[0043] To provide a thorough understanding of the present invention, a detailed structure will be provided in the following description to illustrate the present invention. Obviously, the practice of the present invention is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of the present invention are described in detail below. However, in addition to these detailed descriptions, the present invention may also have other embodiments and should not be construed as being limited to the embodiments set forth herein.

[0044] It should be understood that the purpose of the terms used herein is only to describe specific embodiments and is not intended to limit the present invention. The singular forms "a", "an" and "said / the" are also intended to include the plural forms, unless the context clearly indicates otherwise. When the terms "comprise" and / or "include" are used in this specification, they indicate the presence of the features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof. The terms "upper", "lower", "front", "back", "left", "right" and similar expressions used in the present invention are for illustrative purposes only and are not limiting.

[0045] Ordinal numbers such as "first" and "second" cited in the present invention are merely identifiers and do not have any other meanings, such as a specific order, etc. Moreover, for example, the term "first component" itself does not imply the existence of a "second component", and the term "second component" itself does not imply the existence of a "first component".

[0046] Hereinafter, specific embodiments of the present invention will be described in more detail with reference to the accompanying drawings. These drawings illustrate representative embodiments of the present invention and do not limit the present invention.

[0047] like Figures 2 to 7 As shown, the present invention provides a shaft hole detection device 100 for a shaft hole 200. Specifically, the shaft hole detection device 100 can be used in an engine, the engine includes a bearing, and the bearing has a shaft hole 200. The shaft hole detection device 100 can accurately detect the diameter of the shaft hole 200.

[0048] like Figure 1 As shown, the engine can be placed on a tray 204 and supported by a support frame 203. The engine can be a diesel engine. The engine can include a plurality of bearings, which are spaced apart along the axial direction of the shaft hole 200. Since the spacing between the plurality of bearings in the axial direction is small, it is difficult for existing measuring tools to measure the diameter of the shaft hole 200 located in the middle of the engine. The shaft hole detection device 100 provided by the present invention can enter the interior of the engine and can accurately measure the diameter of the shaft hole 200 in the middle of the engine.

[0049] Specifically, if Figure 2 As shown, the shaft hole detection device 100 includes a shaft hole positioning mechanism 110, a measuring mechanism 140 and a connecting mechanism 180, wherein the connecting mechanism 180 is used to connect the shaft hole positioning mechanism 110 and the measuring mechanism 140. The shaft hole positioning mechanism 110 and the measuring mechanism 140 can enter the interior of the cylinder block 202 of the engine.

[0050] The shaft hole positioning mechanism 110 is used to locate the center of the shaft hole 200. The shaft hole positioning mechanism 110 is located on the side of the shaft hole 200. The shaft hole positioning mechanism 110 can be located between two adjacent bearings. The height direction of the shaft hole positioning mechanism 110 is approximately perpendicular to the axial direction of the shaft hole 200. The shaft hole detection device 100 is connected to the truss through a hanger. The hanger is used to move the shaft hole detection device 100, and can move the shaft hole positioning mechanism 110 to the side of the shaft hole 200 so that the shaft hole positioning mechanism 110 can locate the center of the shaft hole 200.

[0051] The shaft hole positioning mechanism 110 includes at least three positioning members (not shown), which are movable in the axial direction. The at least three positioning members are spaced apart along the circumferential direction of the shaft hole 200. The at least three positioning members are movable into the shaft hole 200 in the axial direction.

[0052] The shaft hole positioning mechanism 110 can move in the radial direction of the shaft hole 200. Specifically, at least three positioning members can also move in the radial direction of the shaft hole 200. The at least three positioning members located in the shaft hole 200 move the same distance in the radial direction. The at least three positioning members can be arranged radially in the radial direction. Figure 4 As shown, at least three positioning members intersect at a center point o. "The distance that the positioning member moves in the radial direction" refers to the distance between the free end of the positioning member and the center point in the radial direction.

[0053] For example, the at least three positioning members may include a first positioning member, a second positioning member, and a third positioning member, each of which is capable of moving in a radial direction. The first positioning member, the second positioning member, and the third positioning member may intersect at a center point o. The first positioning member, the second positioning member, and the third positioning member each include a center end and a free end, the center ends of the first positioning member, the second positioning member, and the third positioning member intersect at the center point o, and the free ends of the first positioning member, the second positioning member, and the third positioning member are capable of moving in a radial direction.

[0054] The radial direction may include a first radial direction D1, a second radial direction D2, and a third radial direction D3, wherein the first radial direction D1, the second radial direction D2, and the third radial direction D3 intersect each other. Preferably, the angles between the first radial direction D1, the second radial direction D2, and the third radial direction D3 may be equal, for example, 120°.

[0055] The first positioning member moves along the first radial direction D1, and the free end of the first positioning member can move along the first radial direction D1 toward the inner diameter surface 201 of the shaft hole 200. The free end of the first positioning member can abut against the inner diameter surface 201 of the shaft hole 200 at the position of the first contact point 111 along the first radial direction D1.

[0056] The second positioning member moves along the second radial direction D2, and the free end of the second positioning member can move along the second radial direction D2 toward the inner diameter surface 201 of the shaft hole 200. The free end of the second positioning member can abut against the inner diameter surface 201 of the shaft hole 200 at the position of the second contact point 112 along the second radial direction D2.

[0057] The third positioning member moves along the third radial direction D3, and the free end of the third positioning member can move along the third direction toward the inner diameter surface 201 of the shaft hole 200. The free end of the third positioning member can abut against the inner diameter surface 201 of the shaft hole 200 at the position of the third contact point 113 along the third radial direction D3.

[0058] The free ends of the first positioning member, the second positioning member, and the third positioning member in the shaft hole 200 move the same distance in the radial direction. At this time, the center point o of the first positioning member, the second positioning member, and the third positioning member is aligned with the central axis A of the shaft hole 200 (the central axis A of the shaft hole 200 is at Figure 3 Of course, the shaft hole positioning mechanism 110 may also include a greater number of positioning components, such as six, nine, etc., and this embodiment is not intended to be limiting.

[0059] At the same time, the shaft hole positioning mechanism 110 can move in the radial direction, which can ensure that at least three positioning components that move the same distance can abut against the inner diameter surface 201 of the shaft hole 200, thereby enabling at least three positioning components to move in the radial direction to a position where they abut against the inner diameter surface 201 of the shaft hole 200.

[0060] For example, the first positioning member in shaft hole 200 moves a distance L1 along the first radial direction D1, the second positioning member in shaft hole 200 moves a distance L2 along the second radial direction D2, and the third positioning member in shaft hole 200 moves a distance L3 along the third radial direction D3, where L1 = L2 = L3. While the free ends of the first and second positioning members can abut against the inner diameter surface 201 of shaft hole 200, the free end of the third positioning member may be spaced apart from the inner diameter surface 201 of shaft hole 200, meaning that the free end of the third positioning member does not abut against the inner diameter surface 201 of shaft hole 200. In this case, center point o is not located on the central axis A of shaft hole 200. Therefore, in order to make the center point o located on the central axis A of the shaft hole 200, the shaft hole positioning mechanism 110 can move in the radial direction to adjust the position of the third positioning member so that the free end of the third positioning member is against the inner diameter surface 201 of the shaft hole 200, thereby ensuring that the center point o is located on the central axis A of the shaft hole 200, so that the shaft hole positioning mechanism 110 can locate the center of the shaft hole 200.

[0061] The measuring mechanism 140 is used to measure the diameter of the shaft hole 200. The measuring mechanism is located between the two shaft holes 200. A lifting device can move the measuring mechanism 140 to the side of the shaft hole 200. The measuring mechanism 140 includes an aperture measuring member 141 that can be moved axially into the shaft hole 200. Once inside the shaft hole 200, the aperture measuring member 141 is used to detect the diameter of the shaft hole 200. The movement of the aperture measuring member 141 will be described later.

[0062] The connecting mechanism 180 can connect the shaft hole positioning mechanism 110 and the measuring mechanism 140 together, so that the measuring mechanism 140 and the shaft hole positioning mechanism 110 move synchronously in the radial direction, thereby ensuring that the measuring mechanism 140 can accurately measure the diameter of the shaft hole 200 .

[0063] According to the shaft hole detection device of the present invention, the shaft hole detection device includes a shaft hole positioning mechanism, a measuring mechanism and a connecting mechanism, the shaft hole positioning mechanism includes at least three positioning members, at least three positioning members can be moved into the shaft hole in the axial direction, the shaft hole positioning mechanism can be moved in the radial direction so that at least three positioning members located in the shaft hole and moved the same distance in the radial direction respectively abut against the inner diameter surface of the shaft hole, the measuring mechanism includes an aperture measuring member, the aperture measuring member can be moved into the shaft hole in the axial direction, the aperture measuring member located in the shaft hole is used to detect the diameter of the shaft hole, and the connecting mechanism is used to connect the shaft hole positioning mechanism and the measuring mechanism so that the shaft hole positioning mechanism and the measuring mechanism move synchronously in the radial direction. In this way, the shaft hole positioning mechanism and the measuring mechanism move synchronously in the radial direction, the shaft hole positioning mechanism can accurately locate the center of the shaft hole, thereby ensuring that the measuring mechanism can accurately measure the diameter of the shaft hole, realizing automatic positioning, automatic measurement and automatic judgment, flexible operation, improved measurement accuracy, reduced manual operation errors, and improved production efficiency and safety in the engine production process.

[0064] Further, if Figure 3 As shown, the shaft hole positioning mechanism 110 also includes a positioning body 114 and a positioning axial drive member 115. The positioning body 114 is provided with at least three positioning members. The positioning body 114 can be constructed to be hollow, and the at least three positioning members can be located inside the positioning body 114 so that the at least three positioning members can move synchronously in the axial direction. The positioning axial drive member 115 can be connected to the positioning body 114 to drive the at least three positioning members to move in the axial direction.

[0065] The positioning axial drive member 115 can be configured as a cylinder, which can include an axially retractable output rod. The output rod is connected to the positioning body 114 to drive the positioning body 114 to move axially. The positioning axial drive member 115 can be radially located above the positioning body 114 to conserve space.

[0066] The shaft hole positioning mechanism 110 also includes at least three positioning radial drive members 116, which are respectively connected to the at least three positioning members to respectively drive the at least three positioning members to move in the radial direction. The positioning radial drive members 116 can be constructed as cylinders, which are located inside the positioning body 114 to drive the positioning members inside the positioning body 114 to move in the radial direction. Of course, the positioning members inside the positioning body 114 can also move in the axial direction to extend out of the positioning body 114 and then enter the shaft hole 200. During the process of the positioning members extending out of the positioning body 114 in the axial direction of the shaft hole 200, the positioning members can also move in the radial direction of the shaft hole 200 at the same time.

[0067] The top of the shaft hole positioning mechanism 110 is also connected to the lower surface 181 of the connecting mechanism 180. The shaft hole positioning mechanism 110 also includes a first positioning connecting member 119, which is used to connect the positioning body 114 and the connecting mechanism 180. The first positioning connecting member 119 is located above the positioning body 114 along the height direction of the shaft hole detection device 100. In this way, space is saved and it is convenient for lifting. The connecting mechanism 180 can be constructed as a roughly plate-like structure. The lower surface 181 of the connecting mechanism 180 can be fixedly connected to the first positioning connecting member 119. As a result, the shaft hole positioning mechanism 110 and the connecting mechanism 180 can move together in the radial direction.

[0068] The shaft hole positioning mechanism 110 further includes a positioning guide assembly 118, which may include a guide rail and a slider. The slider is connected to the guide rail and is movable along the guide rail. The guide rail extends in a direction substantially parallel to the axial direction of the shaft hole 200. The slider is connected to the positioning body 114 to ensure axial movement of the positioning body 114.

[0069] The guide rail can be attached to the first positioning connection member 119. The cross-sectional shape of the first positioning connection member 119 can be configured as a roughly L-shaped shape. In this embodiment, the cross-sectional shape is roughly parallel to the axial direction. The first positioning connection member 119 includes a first connecting section and a second connecting section, which are roughly perpendicular to each other. The top of the first connecting section is connected to the lower surface 181 of the connection mechanism 180 to reduce weight. The second connecting section is connected to the guide rail to provide sufficient travel distance for the slider.

[0070] The shaft hole positioning mechanism 110 also includes a second positioning connecting member 120, which is used to connect the output rod of the positioning axial drive member 115 and the positioning body 114. The cross-sectional shape of the second positioning connecting member 120 is roughly triangular. Preferably, the cross-sectional shape of the second positioning connecting member 120 is a right-angled triangle. The second positioning connecting member 120 includes a first right-angle segment and a second right-angle segment, and the first right-angle segment and the second right-angle segment are vertically connected. The first right-angle segment can be connected to the slider, and the second right-angle segment is connected to both the output rod of the positioning axial drive member 115 and the positioning body 114. In this way, the output rod of the positioning axial drive member 115 telescopically moves to drive the second positioning connecting member 120 and the positioning body 114 to move simultaneously, thereby driving at least three positioning members to move in the axial direction.

[0071] Next, the structure of the measuring mechanism 140 will be described.

[0072] like Figure 5 and Figure 6As shown, the aperture measurement member 141 may include a sensor that can move along the axial direction of the shaft hole 200 and can enter the shaft hole 200. The sensor can be configured as an electric displacement sensor and can also perform automatic data analysis and judgment. The sensor located in the shaft hole 200 can contact the inner diameter surface 201 of the shaft hole 200, thereby detecting the diameter of the shaft hole 200.

[0073] To improve detection accuracy, the sensor located in the shaft hole 200 can also rotate along the circumferential direction of the shaft hole 200, thereby detecting the diameter at multiple locations on the inner diameter surface 201 of the shaft hole 200. In this way, the measuring mechanism 140 of the present invention switches from traditional three-point data acquisition to circumferential point data acquisition, ensuring measurement stability and consistency. At least three positioning members located in the shaft hole 200, which move the same distance in the radial direction, are aligned with the inner diameter surface 201 of the shaft hole 200. This ensures that the axis of the sensor's rotation about the circumferential direction coincides with the central axis A of the shaft hole 200, thereby ensuring the accuracy of the sensor's detection of the diameter of the shaft hole 200.

[0074] Specifically, the measuring mechanism 140 also includes a measuring circumferential drive member 142 and a rotating shaft 143, and the rotating shaft 143 is connected to the aperture measuring member 141. The measuring circumferential drive member 142 can be connected to the aperture measuring member 141 via the rotating shaft 143 to drive the aperture measuring member 141 to rotate in the circumferential direction. The measuring circumferential drive member 142 can be constructed as a motor, which can be a precision rotary motor. The precision rotary motor can include an output shaft. The output shaft of the measuring circumferential drive member 142 can be connected to the rotating shaft 143 to drive the rotating shaft 143 to rotate. The rotating shaft 143 is coaxially arranged with the shaft hole 200. The central axis of the rotating shaft 143 coincides with the central axis A of the shaft hole 200 to ensure that the aperture measuring member 141 can rotate around the central axis A of the shaft hole 200, and the aperture measuring member 141 contacts the inner diameter surface 201 of the shaft hole 200, thereby ensuring the accuracy of the measurement by the aperture measuring member 141.

[0075] Preferably, the measurement circumferential drive member 142 and the rotating shaft 143 can be arranged side by side in the radial direction to save space. The measurement mechanism 140 also includes a transmission member 146, which is used to connect the measurement circumferential drive member 142 and the rotating shaft 143. The transmission member 146 can be configured as a pulley structure, one end of which is connected to the output shaft of the measurement circumferential drive member 142, and the other end of the pulley structure is connected to the rotating shaft 143, so that the output shaft of the measurement circumferential drive member 142 drives the rotating shaft 143 to rotate synchronously, thereby driving the sensor to rotate.

[0076] Further, combined with Figure 7As shown, the measuring mechanism 140 further includes a measuring axial drive member 144, which is connected to the aperture measuring member 141 to drive the aperture measuring member 141 to move axially. The measuring axial drive member 144 can be configured as a motor, which can include an output shaft. The output shaft of the measuring axial drive member 144 can be connected to the aperture measuring member 141 to drive the aperture measuring member 141 to move axially.

[0077] The measuring mechanism 140 also includes a frame, which is used to connect the measuring circumferential drive assembly and the rotating shaft 143 together to form a whole. Optionally, the output shaft of the measuring axial drive member 144 can be constructed as a screw. The measuring mechanism 140 also includes a measuring guide assembly 148, which can be constructed as a wide guide rail. The frame can also be connected to the output shaft of the measuring axial drive member 144 through the measuring guide assembly 148. The rotation of the output shaft of the measuring axial drive member 144 can drive the measuring circumferential drive member 142 and the rotating shaft 143 to move in the axial direction, thereby driving the aperture measuring member 141 to move in the axial direction.

[0078] The top of the measuring mechanism 140 is connected to the lower surface 181 of the connecting mechanism 180. Optionally, the measuring mechanism 140 also includes a measuring connecting member 147, which is used to connect the frame and the connecting mechanism 180 together. The cross-sectional shape of the measuring connecting member 147 is roughly trapezoidal. The measuring connecting member 147 is located above the aperture measuring member 141 along the height direction of the shaft hole detection device 100, thereby saving space and facilitating lifting. The top of the measuring connecting member 147 is connected to the lower surface 181 of the connecting mechanism 180. In this way, the measuring mechanism 140 and the shaft hole positioning mechanism 110 can move synchronously in the radial direction.

[0079] Return now Figure 2 The shaft hole positioning mechanism 110 and the measuring mechanism 140 are respectively located on either side of the shaft hole 200 in the axial direction. Preferably, the axial movement direction of the positioning member of the shaft hole positioning mechanism 110 is opposite to the movement direction of the aperture measuring member 141 of the measuring mechanism 140. The shaft hole 200 is located between the shaft hole positioning mechanism 110 and the measuring mechanism 140 in the axial direction.

[0080] The axial direction may include a first axial direction and a second axial direction, the positioning member moves toward the shaft hole 200 along the first axial direction to enter the shaft hole 200, and the aperture measuring member 141 moves toward the shaft hole 200 along the second axial direction to enter the shaft hole 200. The first axial direction and the second axial direction are opposite to each other.

[0081] Further, if Figure 6As shown, the measuring mechanism 140 further includes a measuring radial drive member 145, which can be located inside the aperture measuring member 141. The measuring radial drive member 145 can be configured as a cylinder including an output rod. The output shaft of the measuring radial drive member 145 is connected to the sensor to drive the sensor to move in a radial direction. The measuring radial drive member 145 can drive the sensor to move in a radial direction toward the inner diameter surface 201 of the shaft hole 200, thereby causing the sensor to contact the inner diameter surface 201 of the shaft hole 200.

[0082] Of course, after the sensor measurement is completed, the measurement radial drive member 145 can drive the sensor to move radially toward the central axis A of the shaft hole 200 to reset. The measurement axial drive member 144 can drive the rotating shaft 143 and the measurement circumferential drive member 142 to move axially away from the shaft hole positioning mechanism 110 to reset.

[0083] The operator can use a lifting device to move the measuring mechanism 140 to the side of the shaft hole 200 to measure the hole diameter. After the measuring mechanism 140 completes the measurement, the operator can use the lifting device to move the measuring mechanism 140 to the storage rack. The lifting device can be a KBK (Kombiniert Kran, modular crane) to lift the measuring mechanism 140 and the shaft hole positioning mechanism 110. It can move the measuring mechanism 140 and the shaft hole positioning mechanism 110 in both axial and radial directions. Of course, the lifting device can also lift the crankshaft and bearing cap.

[0084] The shaft hole detection device according to the present invention has high detection accuracy, ensures product production consistency and cleanliness, and can be applied to large or extra-large engine shaft hole detection, solving the time-consuming and labor-intensive problem of extra-large diesel engines, and improving measurement efficiency and accuracy. The shaft hole detection device of the present invention includes an automatic centering structure and a connecting mechanism. The connecting mechanism can make the shaft hole positioning mechanism and the measuring mechanism move synchronously, and can effectively solve the measurement deviation caused by the load of the measuring mechanism itself. The shaft hole detection device of the present invention includes an automatic measurement structure, which realizes measurement by rotating a single electric displacement sensor, and changes the original three-point data measurement to automatic collection of circumferential data.

[0085] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art in the field of the invention. The terms used herein are only for describing specific implementation purposes and are not intended to limit the invention. Terms such as "part" and "component" appearing herein may refer to either a single part or a combination of multiple parts. Terms such as "installation" and "setting" appearing herein may refer to either a component being directly attached to another component or a component being attached to another component through an intermediate component. Features described herein in one embodiment may be applied to another embodiment alone or in combination with other features, unless the feature is not applicable in the other embodiment or otherwise specified.

[0086] The present invention has been described through the above embodiments, but it should be understood that the above embodiments are for illustrative and illustrative purposes only and are not intended to limit the present invention to the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the above embodiments and that various variations and modifications may be made based on the teachings of the present invention, all of which fall within the scope of the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A shaft hole detection device for a shaft hole, characterized in that: The shaft hole detection device comprises: A shaft hole positioning mechanism, the shaft hole positioning mechanism comprising at least three positioning members, each of the at least three positioning members being movable into the shaft hole along the axial direction of the shaft hole, and the shaft hole positioning mechanism being movable along the radial direction of the shaft hole so that the at least three positioning members located in the shaft hole and moving the same distance along the radial direction of the shaft hole respectively abut against the inner diameter surface of the shaft hole; a measuring mechanism comprising an aperture measuring member, a measuring axial drive member, and a measuring guide assembly, wherein the aperture measuring member is movable into the axial hole along the axial direction, the aperture measuring member located in the axial hole is used to detect the diameter of the axial hole, the aperture measuring member is connected to an output shaft of the measuring axial drive member via the measuring guide assembly, and rotation of the output shaft of the measuring axial drive member is capable of driving the aperture measuring member to move along the axial direction; and A connecting mechanism, the connecting mechanism is used to connect the shaft hole positioning mechanism and the measuring mechanism so that the shaft hole positioning mechanism and the measuring mechanism move synchronously along the radial direction, The shaft hole positioning mechanism and the measuring mechanism are respectively located on both sides of the shaft hole along the axial direction, and the direction of movement of the positioning member along the axial direction is opposite to the direction of movement of the aperture measuring member.

2. The shaft hole detection device according to claim 1, characterized in that: The bore diameter measuring member includes a sensor located in the shaft hole and in contact with the inner diameter surface, and the sensor is rotatable in a circumferential direction of the shaft hole.

3. The shaft hole detection device according to claim 1, characterized in that: The shaft hole positioning mechanism further includes a positioning body and a positioning axial drive member. The positioning body is provided with the at least three positioning members. The positioning axial drive member is connected to the positioning body to drive the at least three positioning members to move in the axial direction.

4. The shaft hole detection device according to claim 3, characterized in that: The shaft hole positioning mechanism further includes at least three positioning radial driving members, which are respectively connected to the at least three positioning members to respectively drive the at least three positioning members to move along the radial direction.

5. The shaft hole detection device according to claim 2, characterized in that: The measuring mechanism further includes a measuring circumferential direction driving member and a rotating shaft. The measuring circumferential direction driving member is connected to the aperture measuring member via the rotating shaft to drive the aperture measuring member to rotate along the circumferential direction.

6. The shaft hole detection device according to claim 5, characterized in that: The measuring mechanism further includes a measuring radial direction driving member connected to the sensor for driving the sensor to move along the radial direction.

7. The shaft hole detection device according to claim 5, characterized in that: The measuring mechanism further includes a transmission member for connecting the measuring circumferential drive member and the rotating shaft. The rotating shaft is coaxially arranged with the shaft hole. The measuring circumferential drive member and the rotating shaft are arranged side by side along the radial direction.

8. The shaft hole detection device according to claim 1, characterized in that: The tops of the shaft hole positioning mechanism and the measuring mechanism are both connected to the lower surface of the connecting mechanism.

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